V/156ivo://CDS.VizieR/V/156CDSLuo A.-L.Zhao Y.-H.Zhao G.et al.2024-09-09T09:32:48Z2022-04-08T08:58:28ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysspectroscopyphotometryThe Data Release Seven of LAMOST Low-Resolution Spectroscopic Survey (LRS). The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) is a Chinese national scientific research facility operated by the National Astronomical Observatories, Chinese Academy of Sciences. It is a special reflecting Schmidt telescope with 4000 fibers in a field of view of 20deg^2^ in the sky. Until July 2019, LAMOST has completed its pilot survey, which was launched in October 2011 and ended in June 2012, and the regular survey of the first seven years, which was initiated on September 2012. In this data release, there are totally 10,431,197 low resolution spectra published, which satisfy the selection criteria that the LAMOST LRS General Catalog also used. The data products of this release can be available from the website http://dr7.lamost.org/v2.0/, and they include 1. Spectra. - There are 10,431,197 flux (relatively)- and wavelength-calibrated, sky-subtracted spectra in DR7, including 9,846,793 stellar spectra, 198,272 galaxy spectra, 66,612 quasar spectra, and 319,520 unknown object spectra, and these spectra cover the wavelength range of 3690{AA}-9100{AA} with a resolution of 1800 at the 5500{AA}. 2. Spectroscopic Parameter Catalogs. - In this data release, nine spectroscopic parameter catalogs are also published and they are the LAMOST LRS General Catalog, the LAMOST LRS Stellar Parameter Catalog of A, F, G and K Stars, the LAMOST LRS Line-Index Catalog of A Type Stars, the LAMOST LRS Catalog of gM, dM, and sdM Stars, the LAMOST LRS Multiple Epoch Catalog, the LAMOST LRS Observed Plate Information Catalog, the LAMOST LRS Input Catalog, the LAMOST LRS Catalog of Cataclysmic Variable Stars, and the LAMOST LRS Catalog of White Dwarf Stars respectively. Tens of parameters are included in these catalogs, such as right ascension, declination, signal to noise ratio (S/N), magnitude, gaia_source_id, gaia_g_mean_mag, atmospheric parameters (effective temperature, surface gravity, and metallicity), radial velocity, element abundance, spectral line indices, line widths, the metallicity sensitive parameter, and the magnetic activity flag. Data Release One of LAMOST Medium-Resolution Spectroscopic Survey (MRS). The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) is a Chinese national scientific research facility operated by the National Astronomical Observatories, Chinese Academy of Sciences. It is a special reflecting Schmidt telescope with 4000 fibers in a field of view of 20 deg^2^ in the sky. Since October 2018, LAMOST started the second stage survey program (LAMOST II), which contains both low- and medium-resolution spectroscopic surveys. LAMOST II takes about 50% nights (dark/gray nights) to continue the previous low-resolution spectroscopic survey, and another 50% nights (bright/gray nights) to conduct the medium-resolution survey (MRS). For LAMOST MRS, it includes two surveys, i.e., the time-domain and the non time-domain surveys. The main purpose of the time-domain survey is to investigate variable targets, which were repeatedly observed in several observation nights, but targets of the non time-domain survey were observed only in one night in general. This time, 11,190,570 single exposure spectra and 2,906,397 coadded spectra were obtained, which were written into 1,498,289 FITS files. For objects close to the moon, spectra may be affected by the moon, thus targets with the angular distances to the moon less than 10 degrees were not observed. For the non time-domain survey, there are totally 988,188 coadded spectra published, and for the time-domain survey, 2,828,655 single exposure spectra were released. The data products of this data release can be available from the website http://dr7.lamost.org/v2.0/, and they include 1. Spectra. - For a target of MRS, we can get two spectra within an exposure, including a blue (B) and a red (R) band spectrum, and their wavelength ranges are [4950{AA}, 5350{AA}] and [6300{AA}, 6800{AA}], respectively. Generally, each object was observed several times, and we would obtain the coadded B and R band spectra by combing the single exposure spectra. Few targets, however, lack of the spectral data of either band for some reason like the wavelength calibration, only one even no coadded spectra exists in their FITS file. For single exposure and coadd spectra, they both have a resolution of 7500 respectively at 5163{AA} (blue) and 6593{AA} (red). 2. Spectroscopic Parameter Catalogs. - In this data release, four spectroscopic parameter catalogs are published, and they are the LAMOST MRS General Catalog, the LAMOST MRS Parameter Catalog, the LAMOST MRS Observed Plate Information Catalog, and the LAMOST MRS Input Catalog, respectively. LAMOST targets were cross-matched with Gaia DR2 catalog, and their Gaia source identifiers and G magnitudes are included in two LAMOST MRS catalogs except the LAMOST MRS Observed Plate Information Catalog and the LAMOST MRS Input Catalog.2019RAA..in.prep..Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/V/156CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://dr7.lamost.org : LAMOST DR7 Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=V/156https://vizier.iucaa.in/viz-bin/VizieR-2?-source=V/156http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=V/156https://vizier.cds.unistra.fr/viz-bin/votable?-source=V/156https://vizier.iucaa.in/viz-bin/votable?-source=V/156http://vizieridia.saao.ac.za/viz-bin/votable?-source=V/156GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table V/156/dr7lrs (LAMOST LRS General Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/V/156/dr7lrs?https://vizier.iucaa.in/viz-bin/conesearch/V/156/dr7lrs?http://vizieridia.saao.ac.za/viz-bin/conesearch/V/156/dr7lrs?GETtext/xml+votable180.050000true332.202274-2.0567670.005555555555555556Cone search capability for table V/156/dr7slrs (LAMOST LRS A, F, G and K Star Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/V/156/dr7slrs?https://vizier.iucaa.in/viz-bin/conesearch/V/156/dr7slrs?http://vizieridia.saao.ac.za/viz-bin/conesearch/V/156/dr7slrs?GETtext/xml+votable180.050000true332.202274-2.0567670.005555555555555556Cone search capability for table V/156/dr7aslrs (LAMOST LRS A Star Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/V/156/dr7aslrs?https://vizier.iucaa.in/viz-bin/conesearch/V/156/dr7aslrs?http://vizieridia.saao.ac.za/viz-bin/conesearch/V/156/dr7aslrs?GETtext/xml+votable180.050000true332.321523-2.1220240.005555555555555556Cone search capability for table V/156/dr7mslrs (LAMOST LRS M Star Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/V/156/dr7mslrs?https://vizier.iucaa.in/viz-bin/conesearch/V/156/dr7mslrs?http://vizieridia.saao.ac.za/viz-bin/conesearch/V/156/dr7mslrs?GETtext/xml+votable180.050000true332.512558-1.8414080.005555555555555556Cone search capability for table V/156/dr7melrs (LAMOST LRS Multiple Epoch Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/V/156/dr7melrs?https://vizier.iucaa.in/viz-bin/conesearch/V/156/dr7melrs?http://vizieridia.saao.ac.za/viz-bin/conesearch/V/156/dr7melrs?GETtext/xml+votable180.050000true134.9453259165-0.00561204510.005555555555555556Cone search capability for table V/156/dr7plrs (LAMOST LRS Observed Plate Information Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/V/156/dr7plrs?https://vizier.iucaa.in/viz-bin/conesearch/V/156/dr7plrs?http://vizieridia.saao.ac.za/viz-bin/conesearch/V/156/dr7plrs?GETtext/xml+votable180.050000true332.1686860.33804070.005555555555555556Cone search capability for table V/156/dr7mrs (LAMOST MRS General Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/V/156/dr7mrs?https://vizier.iucaa.in/viz-bin/conesearch/V/156/dr7mrs?http://vizieridia.saao.ac.za/viz-bin/conesearch/V/156/dr7mrs?GETtext/xml+votable180.050000true15.571336.3022480.005555555555555556Cone search capability for table V/156/dr7smrs (LAMOST MRS A Star Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/V/156/dr7smrs?https://vizier.iucaa.in/viz-bin/conesearch/V/156/dr7smrs?http://vizieridia.saao.ac.za/viz-bin/conesearch/V/156/dr7smrs?GETtext/xml+votable180.050000true15.3672784.00940240.005555555555555556Cone search capability for table V/156/dr7pmrs (LAMOST MRS Observed Plate Information Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/V/156/dr7pmrs?https://vizier.iucaa.in/viz-bin/conesearch/V/156/dr7pmrs?http://vizieridia.saao.ac.za/viz-bin/conesearch/V/156/dr7pmrs?GETtext/xml+votable180.050000true16.21932675.6562660.0055555555555555561/1 23 2/1 3 8-10 12 16 18-22 24 26 33-36 40 53 58 85 91 105 107 109 124 3/0-2 8-10 44 52 68 71 92-94 101-103 108-110 112-113 128-130 148 150-151 153-155 157 164 166-168 171 173-174 178 209 226 277 279 283 286-287 295 297-301 303-304 306 310-311 315 317-319 345-348 350-351 357 361-363 406-407 409-410 412-413 415 425-426 432 434-435 442-443 445-447 485 487 489-490 494-495 504-505 507 509 4/13-15 44-45 47 181-183 185-190 212-213 216-218 224 226 276-277 279-280 282-283 400-402 444 446 456-458 460 464 480 482 495 524 526-527 597 599 610-611 624-626 632-634 636 660 662-663 676-678 680-681 688-689 691 700-701 705-710 716 736 748 768 772-773 781 785-787 790-793 795-796 798-800 802 814 821 825 830-831 833 835 840-841 844-845 866-867 872-874 876 878 880-881 884 886-887 889 891-894 901 911 914 916 918 920 922-924 926 944-946 954-956 980 992 1087 1103-1104 1113 1115 1125-1127 1130-1131 1137-1142 1167 1173-1175 1178-1179 1186-1187 1208 1210-1211 1220 1222 1228-1229 1231 1233 1235-1238 1248-1249 1251 1254 1258-1259 1265 1267 1339 1341-1343 1359 1378-1379 1397-1399 1422-1423 1425 1427 1432 1434-1435 1437-1439 1443 1591 1597-1599 1613-1615 1619 1621-1623 1633-1635 1644 1646-1647 1657-1659 1671 1677 1679 1696-1697 1699 1708-1709 1711 1733-1735 1760-1762 1765-1767 1777 1779 1896 1898-1900 1902-1903 1933 1935 1939 1944-1946 1964 1966-1969 1971-1973 2008 2010 2012 2014 2025 2032-2034 2040-2041 2043 2045-2047 2300-2301 2303 2555 2558-2559 2813 2815 5/48-49 51 185 187 720 722 738-739 858 860-862 880 900-901 912-913 916-917 928-929 931-934 960 1112-1114 1124-1126 1520-1522 1524 1612-1614 1780-1782 1790-1791 1836-1838 1844 1846 1848-1849 1860 1862 1864-1865 1924-1926 1946-1947 1950 1952 1957-1959 1961-1962 1964-1965 1968-1970 1975 2018-2019 2023-2026 2028-2030 2040 2100-2102 2384-2386 2392 2394-2395 2432-2434 2437-2439 2509-2511 2540-2542 2558 2644-2646 2716 2718 2728-2730 2732-2733 2735 2761 2763 2817-2819 2844-2846 2872 2880-2882 2884 2899-2900 2902 2905 2908 2948 2950 2952-2954 2956 2976-2978 2983 2996 2999 3004-3006 3042 3048 3076 3083-3084 3086-3087 3100-3101 3103 3108-3109 3112 3114 3132-3133 3136-3138 3152-3154 3156 3158-3159 3176-3177 3188-3189 3191 3214-3215 3232-3233 3236-3237 3239 3248 3250-3251 3262 3268-3269 3278-3280 3283 3289 3292-3293 3311-3312 3315 3318-3319 3328-3329 3338-3339 3368-3370 3372-3373 3384-3386 3388-3389 3456 3458-3459 3462-3463 3473-3475 3478 3480 3482 3500-3501 3509-3511 3516-3518 3533 3535 3541 3543 3554-3555 3560-3561 3563 3580-3582 3594-3595 3597-3599 3601 3608 3610 3612-3613 3635 3638 3641 3643 3648 3650 3653 3655 3661 3669-3671 3676-3678 3686-3687 3701-3703 3708-3710 3788-3790 3792 3794 3799 3805-3807 3813-3815 3828-3829 3840-3842 3850-3852 3854 3857 3859-3860 3862 3865 3868 3872-3874 3877 3888 3905 3908 3978 4343 4391 4400 4402-4403 4408-4409 4411 4420 4429 4431 4497 4546-4547 4572-4574 4661-4663 4667 4689-4691 4706 4709-4711 4736 4738-4739 4743 4836-4837 4839 4884 4894-4895 4923 4931 4937-4939 4956-4958 5000-5002 5009 5011-5014 5020 5022-5024 5026-5027 5029 5031 5056-5057 5059 5065-5067 5339 5342-5343 5350-5351 5361-5363 5399 5405-5407 5423 5429 5431 5433-5435 5507 5509-5511 5584-5585 5587 5671 5677 5682-5683 5685-5687 5697 5699 5705 5707 5732 5734 5745 5747 5767 5771 6385 6387 6427-6428 6430-6431 6439 6443 6445-6447 6449-6451 6465-6470 6473 6475 6480-6481 6483 6529-6531 6580-6582 6624-6625 6627 6707 6714-6715 6793 6795 6840 6842 6928 6930-6931 7052 7054-7056 7058-7059 7105 7107 7113-7115 7413-7415 7420-7421 7423 7483-7484 7486-7487 7507 7510-7511 7543 7548-7549 7551 7553-7555 7558 7560-7561 7563-7564 7572-7573 7606-7607 7616 7618-7619 7624-7625 7646-7647 7656 7658 7668-7669 7711 7726-7727 7731 7737 7739 7750-7752 7754-7755 7789-7791 7812-7813 7815 7821 7823 7860-7862 7881-7883 7897-7901 7903 8005 8007-8008 8010 8013 8015-8016 8018 8024 8026 8031 8037 8045-8047 8053-8055 8060-8061 8063 8096-8098 8106-8110 8140 8142-8143 8168-8170 8176 8178-8179 9179 9182-9183 9194-9195 9211 10226-10227 10229-10231 11230-11231 11246-11247 11258-11259 12247 12251-12252 12254-12255 12273 12276-12277 12279 12287 6/201 203 736-737 745-747 2884-2886 2892 2894-2895 2944-2946 2949 2951 3056 3066-3067 3429 3431 3437 3439 3452 3454 3504-3506 3508-3509 3512 3528-3530 3536 3552 3608-3610 3612-3613 3632 3640 3642 3656-3657 3660 3672-3673 3676-3677 3720-3721 3723 3740-3742 3748-3749 3760-3761 3778 3844 3848 4460 4462-4463 4509-4511 6092-6094 6100-6102 6104-6105 6112-6114 6120 6461-6463 7132-7134 7152-7154 7156 7159 7356-7358 7380-7382 7400-7401 7404-7405 7408 7410 7444 7446 7452 7464 7472-7474 7708-7710 7728 7743 7812 7816 7821-7823 7826-7827 7842-7843 7852 7854 7884-7885 7888-7890 7894-7895 7897-7899 7904 8066-8067 8070-8071 8089-8091 8108-8109 8111 8124-8126 8136 8138-8139 8168 8412 8414-8415 9548-9550 9572 9574 9740 9742-9745 9747 10032-10033 10035 10172 10174 10192 10208-10209 10212 10223 10238 10588 10590-10591 10868-10870 10876 10878-10879 10924-10925 10927 10937-10939 11040-11041 11232-11234 11236 11240 11249 11252 11264-11265 11267 11388-11389 11472-11474 11492-11494 11496-11498 11532-11534 11544 11552-11554 11556 11560 11589-11591 11604 11606 11612 11614 11629 11804 11806 11820-11822 11828 11832 11882-11883 11886-11887 11898 11916 11925-11927 11992 11994-11995 12005 12007 12013 12028-12030 12174 12196 12198 12200-12201 12309 12311-12314 12317 12319 12325 12327 12340 12342-12343 12384-12385 12388-12390 12392 12394 12408-12409 12411 12421 12426-12427 12454 12460 12462 12480 12487 12493-12495 12517 12519 12536-12537 12540-12541 12556 12558-12559 12620-12621 12623 12628-12629 12631 12716-12717 12719 12760 12762-12763 12818 12824 12826 12850-12851 12854-12855 12904 12906-12907 12936 12952-12953 12980-12981 12983 12996 12998-12999 13040 13042-13043 13081 13084-13085 13126-13129 13131 13153 13155 13160 13162-13165 13176-13177 13180-13181 13183 13189 13191 13197 13239 13255-13256 13259 13266-13267 13269-13271 13322 13324-13325 13327 13344 13346-13347 13349-13351 13484-13486 13496-13497 13500-13501 13503 13548-13550 13560-13561 13565 13567 13830-13831 13847 13889-13891 13906-13907 13910 13916 13918 13924-13926 13936-13938 14013 14033-14035 14076 14112-14113 14117 14128-14129 14131 14137 14139 14160-14162 14169-14171 14208 14210-14211 14214-14215 14249 14251 14332-14334 14365-14367 14370-14371 14375 14385-14387 14400-14401 14403 14408 14410-14411 14414 14436 14438 14444 14446 14461 14463 14528-14530 14535-14536 14538-14539 14546-14547 14549-14551 14556 14558-14561 14563 14569-14570 14617 14619 14641-14643 14648-14650 14652-14653 14673-14675 14716 14719 14736 14738-14739 14743 14800 14802-14803 14844-14846 15164-15165 15172-15174 15180 15182 15184-15185 15189-15191 15193 15195 15200-15202 15215 15217 15232-15234 15236 15240 15242-15243 15245-15247 15250-15251 15320-15322 15324-15325 15328-15330 15332-15333 15372-15374 15392-15393 15398-15399 15412 15414 15420 15422-15425 15427 15433 15435 15444 15446 15452 15454 15457 15459 15466-15467 15476 15500-15502 15505 15507 15513 15516-15517 15520 15522 15556 15558 15560-15561 15617 15619 15625 15628-15629 15636 15640-15641 15675 15678 15696 15698 15704 15712-15713 15716 15722 15761 15765 15767 15773-15775 15793 15796-15797 15799 15808 15810 15904-15906 15908 16000-16002 17371 17391 17557-17559 17588-17589 17591 17604 17606-17607 17685 17687-17690 17693-17695 17713 17715 17721-17723 17797 17799 17805 17807 17829 17831-17832 17834 17837 17839 17951 17973 17975 17981 17983 17994-17995 17997-17999 18058-18059 18063 18071 18074 18077-18079 18176 18178-18180 18182-18183 18300-18301 18303 18641-18643 18661-18663 18717-18719 18740-18741 18743 18749 18754-18755 18816 18818-18819 18830-18831 18833-18835 18948 18950-18951 18965-18968 18970 19352-19353 19355 19540-19542 19544-19546 19568 19570-19571 19574 19680-19682 19684-19685 19688 19690-19691 19712 19838-19839 20012-20014 20032-20033 20035 20041-20043 20060-20061 20086-20087 20100 20102-20103 20113 20115 20121 20123 20232-20233 20235 20258 21350-21351 21353 21355 21362-21363 21365-21367 21391 21395-21396 21398-21399 21413 21415 21421-21423 21441 21443 21589 21591 21617 21619 21686-21687 21710-21711 21713 21715 21722-21723 21730-21731 22022-22023 22034-22035 22344-22345 22347 22654-22655 22679 22717 22722-22723 22726-22727 22737-22739 22817 22819 22825-22827 22932 22934 22940 22942-22943 22976-22977 22985 22987 23063 23077-23079 23082-23083 25423 25434-25435 25437-25439 25445 25447 25453 25455 25513-25516 25518-25519 25530-25531 25533-25535 25537 25539 25545 25547 25701-25703 25716 25718-25719 25751 25766-25767 25769 25771 25778-25779 25794-25795 25857-25859 25884-25886 25888-25889 25891 25896 25898-25899 25928-25929 25931 26114-26115 26332-26334 26504-26505 26709 26711 26714-26715 26717-26719 26725 26727 26733 26813-26815 26823 26852-26853 26855 27168-27169 27171 27177 27179 27364-27365 27367 27373-27375 27716 27718-27719 28212-28213 28215 28229-28230 28416-28417 28419 28425-28427 28448-28450 29567 29645 29647 29650-29651 29669 29674-29676 29678-29679 29689-29691 29925-29927 29940 29942-29943 30022-30023 30034-30035 30037-30039 30064-30065 30068 30120 30122 30169-30171 30200-30201 30203 30209-30211 30226 30250-30251 30264 30271 30277 30301 30303 30314-30315 30318-30319 30325 30354 30357-30360 30365 30367 30416 30418 30468 30470-30471 30488 30490 30505 30508 30512 30514 30549 30551 30557 30559 30573 30575 30578-30579 30581-30583 30600 30602-30603 30661 30680-30681 30684-30685 30837 30839 30841-30843 30887 30893-30895 30898-30899 30902 30918-30919 30954-30955 30998-30999 31012 31014-31015 31152 31154-31155 31236-31237 31239 31245 31256-31257 31259 31272 31274-31275 31281 31283 31289 31291 31452-31453 31455 31520-31522 31584 31586-31587 31609-31611 32002 32008 32010 32019 32025 32027 32038 32044 32046 32049 32059 32070 32076 32078 32100 32108 32110-32111 32119 32145 32147 32152 32154 32156-32157 32177-32179 32208 32210-32211 32249-32251 32396 32416 32418-32419 32422-32423 32446-32447 32564 32566-32567 32686-32687 32708-32709 32711 36671 36710-36711 36714-36715 36722-36723 36726 36757 36759 36765 36767 36794 36832-36833 36836-36837 36839 36842-36843 40797 40858-40859 40862-40863 40869 40871 40877 40899 40902-40903 40913-40915 44979 44982-44983 45026 48981-48983 48997-48999 49001 49003 49013-49015 49112-49113 49141-491431.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/V/156?format=asciidefaultV/156/dr7lrsLAMOST LRS General CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsIDUnique Spectra ID (obsid)meta.idlongindexedLMJDLocal Modified Julian Day (lmjd)time.epochintMJDModified Julian Day (mjd)time.epochintspIdSpectrograph ID (spid)meta.id;instrintFiberIdFiber ID (fiberid)meta.idintRAJ2000Fiber Pointing Right Ascension (J2000) (ra_obs)degpos.eq.ra;meta.mainindexedDEJ2000Fiber Pointing Declination (J2000) (dec_obs)degpos.eq.dec;meta.mainindexedsnru? S/N of u filter (snru)stat.snrdoublenullablesnrg? S/N of g filter (snrg)stat.snrdoublenullablesnrr? S/N of r filter (snrr)stat.snrdoublenullablesnri? S/N of i filter (snri)stat.snrdoublenullablesnrz? S/N of z filter (snrz)stat.snrdoublenullablez? Redshift (z)src.redshiftdoublenullablee_z[]? Redshift Uncertainty (z_err)stat.error;src.redshiftdoublenullablemag1? Magnitude in Band 1 of magType (mag1)magphot.magfloatnullablemag2? Magnitude in Band 2 of magType (mag2)magphot.magfloatnullablemag3? Magnitude in Band 3 of magType (mag3)magphot.magfloatnullablemag4? Magnitude in Band 4 of magType (mag4)magphot.magfloatnullablemag5? Magnitude in Band 5 of magType (mag5)magphot.magfloatnullablemag6? Magnitude in Band 6 of magType (mag6)magphot.magfloatnullabletcommentTarget ID from SDSS, UCAC4, PANSTAR and other catalogues (tcomment)meta.notecharoffsetsWhether there is a fiber offset during observation (offsets)meta.noteintoffsetsv? If the 'offsets' field is true, 'offsetsv' gives the offset distance from the target's coordinator in input catalog (offsets_v)arcsecmeta.notefloatnullableRAOdegRight Ascension from input catalog (ra)degpos.eq.raDEOdegDeclination from input catalog (dec)degpos.eq.decFiberMaskPossible fiber problems (fibermask)meta.noteintGaiaDR2? The "source_id" field of Gaia DR2 catalog (gaia_source_id)meta.idnullableGmag? The "phot_g_mean_mag" field of Gaia DR2 catalog (gaia_g_mean_mag)magphot.mag;em.optdoublenullablespDisplay the LaMOST spectrummeta.ref.urlcharTargetTarget Designation, JHHMMSS.ss+DDMMSS.s (designation)meta.id;meta.maincharindexedObs.DateTarget Observation Date (obsdate)time.epoch;obscharindexedPlanIdPlan Name (planid)obs.fieldcharobjTypeObject Type (objtype)src.classcharClassSpectra Type (class)src.classcharsubClassStellar Sub-Class (subclass)src.classcharmagTypeTarget Magnitude Type (magtype)meta.notechartsourceOrganization or person who submit input catalog (tsource)meta.curationcharmag7? Magnitude in Band 7 of magType (mag7)magphot.magfloatnullableFiberTypeFiber Type of target (Obj, Sky, F-std, Unused, PosErr, Dead) (fibertype)meta.notechartfromInput catalog submitted by an organization or a person determined by the tsource (tfrom)obs.observercharV/156/dr7slrsLAMOST LRS A, F, G and K Star CatalogTeff? Effective Temperature obtained by the LASP (teff)Kphys.temperature.effective;meta.modelledfloatnullablee_Teff? Effective Temperature Uncertainty obtained by the LASP (teff_err)Kstat.error;phys.temperature.effectivedoublenullablelogg? Surface Gravity obtained by the LASP (logg)log(cm.s**-2)phys.gravity;meta.modelledfloatnullablee_logg? Surface Gravity Uncertainty obtained by the LASP (logg_err)log(cm.s**-2)stat.errordoublenullable[Fe/H]? Metallicity obtained by the LASP (feh)phys.abund.Z;meta.modelledfloatnullablee_[Fe/H]? Metallicity Uncertainty obtained by the LASP (feh_err)stat.error;phys.abund.FedoublenullableRV? Heliocentric Radial Velocity obtained by the LASP (rv)km/sspect.dopplerVeloc;pos.heliocentric;meta.modelledfloatnullablee_RV? Uncertainty of Heliocentric Radial Velocity obtained by the LASP (rv_err)km/sstat.errordoublenullableGaiaDR2? The "source_id" field of Gaia DR2 catalog (gaia_source_id)meta.idnullableGmag? The "phot_g_mean_magnitude" field of Gaia DR2 catalog (gaia_g_mean_mag)magphot.mag;em.optdoublenullableObs.DateTarget Observation Date (obsdate)time.epoch;obsnullableindexedTargetTarget designation, JHHMMSS.ss+DDMMSS.s (designation)meta.id;meta.maincharPlanIdPlan Name (planid)obs.fieldcharobjTypeObject Type (objtype)src.classcharClassSpectra Type (class)src.classcharsubClassStellar Sub-Class (subclass)src.classcharz? Redshift (z)src.redshiftdoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsIDUnique ID for each observation of each target (obsid)meta.idlongindexedLMJDLocal Modified Julian Day (lmjd)time.epochintMJDModified Julian Day (mjd)time.epochintspIdSpectrograph ID (spid)meta.id;instrintFiberIdFiber ID (fiberid)meta.idintRAJ2000Fiber Pointing Right Ascension (J2000) (ra_obs)degpos.eq.ra;meta.mainindexedDEJ2000Fiber Pointing Declination (J2000) (dec_obs)degpos.eq.dec;meta.mainindexedsnru? Signal Noise Ratio of u filter (snru)stat.snrdoublenullablesnrg? Signal Noise Ratio of g filter (snrg)stat.snrdoublenullablesnrr? Signal Noise Ratio of r filter (snrr)stat.snrdoublenullablesnri? Signal Noise Ratio of i filter (snri)stat.snrdoublenullablesnrz? Signal Noise Ratio of z filter (snrz)stat.snrdoublenullableDEOdegDeclination from input catalog (dec)degpos.eq.dece_z[]? rms uncertainty on z (z_err)stat.error;src.redshiftdoublenullablemagTypeTarget Magnitude Type (magtype)meta.notecharmag1? Magnitude in Band 1 of magType (mag1)magphot.magfloatnullablemag2? Magnitude in Band 2 of magType (mag2)magphot.magfloatnullablemag3? Magnitude in Band 3 of magType (mag3)magphot.magfloatnullablemag4? Magnitude in Band 4 of magType (mag4)magphot.magfloatnullablemag5? Magnitude in Band 5 of magType (mag5)magphot.magfloatnullablemag6? Magnitude in Band 6 of magType (mag6)magphot.magfloatnullablemag7? Magnitude in Band 7 of magType (mag7)magphot.magfloatnullabletsourceOrganization or person who submit input catalog (tsource)meta.curationcharFiberTypeFiber Type of target (Obj, Sky, F-std, Unused, PosErr, Dead) (fibertype)meta.notechartfromInput catalog submitted by an organization or a person determined by the tsource (tfrom)obs.observerchartcommentTarget ID from SDSS, UCAC4, PANSTAR and other catalogues (tcomment)meta.notecharoffsets[0/1] Whether there is a fiber offset during observation (offsets)meta.noteintoffsetsvIf the 'offsets' field is true, 'offsets_v' gives the offset distance from the target's coordinator in input catalog (offsets_v)meta.notefloatRAOdegRight Ascension from input catalog (ra)degpos.eq.raV/156/dr7aslrsLAMOST LRS A Star CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsIDUnique ID for each observation of each target (obsid)meta.idlongindexedLMJDLocal Modified Julian Day (lmjd)time.epochintMJDModified Julian Day (mjd)time.epochintspIdSpectrograph ID (spid)meta.id;instrintFiberIdFiber ID (fiberid)meta.idintsnrr? Signal Noise Ratio of r filter (snrr)stat.snrdoublenullablesnri? Signal Noise Ratio of i filter (snri)stat.snrdoublenullablesnrz? Signal Noise Ratio of z filter (snrz)stat.snrdoublenullablez? Redshift (z)src.redshiftdoublenullablee_z[]? rms uncertainty on z (z_err)stat.error;src.redshiftdoublenullablemag1? Magnitude in Band 1 of magType (mag1)magphot.magfloatnullablemag2? Magnitude in Band 2 of magType (mag2)magphot.magfloatnullablemag3? Magnitude in Band 3 of magType (mag3)magphot.magfloatnullablemag4? Magnitude in Band 4 of magType (mag4)magphot.magfloatnullablemag5? Magnitude in Band 5 of magType (mag5)magphot.magfloatnullablemag6? Magnitude in Band 6 of magType (mag6)magphot.magfloatnullablemag7? Magnitude in Band 7 of magType (mag7)magphot.magfloatnullableoffsets[0/1] Whether there is a fiber offset during observation (offsets)meta.noteintoffsetsvIf the 'offsets' field is true, 'offsets_v' gives the offset distance from the target's coordinator in input catalog (offsets_v)meta.notefloatRAOdegRight Ascension from input catalog (ra)degpos.eq.raDEOdegDeclination from input catalog (dec)degpos.eq.decKP12? Ca II K line index with band widths of 12{AA}(kp12)0.1nmspect.indexdoublenullableKP18? Ca II K line index with band widths of 18{AA} (kp18)0.1nmspect.indexdoublenullableKP6? Ca II K line index with band widths of 6{AA} (kp6)0.1nmspect.indexdoublenullableHdelta12? Hdelta Line Index with band widths of 12{AA} (hdelta12)0.1nmspect.indexdoublenullableHdelta24? Hdelta Line Index with band widths of 24{AA} (hdelta24)0.1nmspect.indexdoublenullableHdelta28? Hdelta Line Index with band widths of 48{AA} (hdelta48)0.1nmspect.indexdoublenullableHdelta64? Hdelta Line Index with band widths of 64{AA} (hdelta64)0.1nmspect.indexdoublenullableHgamma12? Hgamma Line Index with band widths of 12{AA} (hgamma12)0.1nmspect.index;em.line.HgammadoublenullableHgamma24? Hgamma Line Index with band widths of 24{AA} (hgamma24)0.1nmspect.index;em.line.HgammadoublenullableHgamma48? Hgamma Line Index with band widths of 48{AA} (hgamma48)0.1nmspect.index;em.line.HgammadoublenullableHgamma54? Hgamma Line Index with band widths of 54{AA} (hgamma54)0.1nmspect.index;em.line.HgammadoublenullableHbeta12? Hbeta Line Index with band widths of 12{AA} (hbeta12)0.1nmspect.index;em.line.HbetadoublenullableHbeta24? Hbeta Line Index with band widths of 24{AA} (hbeta24)0.1nmspect.index;em.line.HbetadoublenullableHbeta48? Hbeta Line Index with band widths of 48{AA} (hbeta48)0.1nmspect.index;em.line.HbetadoublenullableHbeta60? Hbeta Line Index with band widths of 60{AA} (hbeta60)0.1nmspect.index;em.line.HbetadoublenullableHalpha12? Halpha Line Index with band widths of 12{AA} (halpha12)0.1nmspect.index;em.line.HalphadoublenullableHalpha24? Halpha Line Index with band widths of 24{AA} (halpha24)0.1nmspect.index;em.line.HalphadoublenullableHalpha48? Halpha Line Index with band widths of 48{AA} (halpha48)0.1nmspect.index;em.line.HalphadoublenullableHalpha70? Halpha Line Index with band widths of 70{AA} (halpha70)0.1nmspect.index;em.line.HalphadoublenullablePa13? Paschen line index from local continuum at 8467.5 with band widths of 13.0{AA} (paschen13)0.1nmspect.indexdoublenullablePa142? Paschen line index from local continuum at 8598.0 with band widths of 42.0{AA} (paschen142)0.1nmspect.indexdoublenullablePa242? Paschen line index from local continuum at 8751.0 with band widths of 42.0{AA} (paschen242)0.1nmspect.indexdoublenullableHaD0.2? Width at 20% below the local continuum of Halpha line (halpha_d02)0.1nmspect.line.widthdoublenullableHbD0.2? Width at 20% below the local continuum of beta line (hbeta_d02)0.1nmspect.line.widthdoublenullableHgD0.2? Width at 20% below the local continuum of Hgamma line (hgamma_d02)0.1nmspect.line.widthdoublenullableHdD0.2? Width at 20% below the local continuum of Hdelta line (hdelta_d02)0.1nmspect.line.widthdoublenullableGaiaDR2? The "source_id" field of Gaia DR2 catalog (gaia_source_id)meta.idnullableGmag? The "phot_g_mean_magnitude" field of Gaia DR2 catalog (gaia_g_mean_mag)magphot.mag;em.optdoublenullableObs.DateTarget Observation Date (obsdate)time.epoch;obsnullableindexedTargetTarget designation, JHHMMSS.ss+DDMMSS.s (designation)meta.id;meta.maincharPlanIdPlan Name (planid)obs.fieldcharobjTypeObject Type (objtype)src.classcharClassSpectra Type (class)src.classcharsubClassStellar Sub-Class (subclass)src.classcharmagTypeTarget Magnitude Type (magtype)meta.notechartsourceOrganization or person who submit input catalog (tsource)meta.curationcharFiberTypeFiber Type of target (Obj, Sky, F-std, Unused, PosErr, Dead) (fibertype)meta.notechartfromInput catalog submitted by an organization or a person determined by the tsource (tfrom)obs.observerchartcommentTarget ID from SDSS, UCAC4, PANSTAR and other catalogues (tcomment)meta.notecharRAJ2000Fiber Pointing Right Ascension (J2000) (ra_obs)degpos.eq.ra;meta.mainindexedDEJ2000Fiber Pointing Declination (J2000) (dec_obs)degpos.eq.dec;meta.mainindexedsnru? Signal Noise Ratio of u filter (snru)stat.snrdoublenullablesnrg? Signal Noise Ratio of g filter (snrg)stat.snrdoublenullableV/156/dr7mslrsLAMOST LRS M Star CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsIDUnique ID for each observation of each target (obsid)meta.idlongindexedLMJDLocal Modified Julian Day (lmjd)time.epochintspIdSpectrograph ID (spid)meta.id;instrintFiberIdFiber ID (fiberid)meta.idintRAJ2000Fiber Pointing Right Ascension (J2000) (ra_obs)degpos.eq.ra;meta.mainindexedDEJ2000Fiber Pointing Declination (J2000) (dec_obs)degpos.eq.dec;meta.mainindexedsnru? Signal Noise Ratio of u filter (snru)stat.snrdoublenullablesnrg? Signal Noise Ratio of g filter (snrg)stat.snrdoublenullablesnrr? Signal Noise Ratio of i filter (snrr)stat.snrdoublenullablesnri? Signal Noise Ratio of i filter (snri)stat.snrdoublenullablesnrz? Signal Noise Ratio of z filter (snrz)stat.snrdoublenullablez? Redshift (z)src.redshiftdoublenullablee_z[]? rms uncertainty on z (z_err)stat.error;src.redshiftdoublenullablemag1? Magnitude in Band 1 of magType (mag1)magphot.magfloatnullablemag2? Magnitude in Band 2 of magType (mag2)magphot.magfloatnullablemag3? Magnitude in Band 3 of magType (mag3)magphot.magfloatnullablemag4? Magnitude in Band 4 of magType (mag4)magphot.magfloatnullablemag5? Magnitude in Band 5 of magType (mag5)magphot.magfloatnullablemag6? Magnitude in Band 6 of magType (mag6)magphot.magfloatnullablemag7? Magnitude in Band 7 of magType (mag7)magphot.magfloatnullableoffsets[0/1] Whether there is a fiber offset during observation (offsets)meta.noteintoffsetsvIf the 'offsets' field is true, 'offsets_v' gives the offset distance from the target's coordinator in input catalog (offsets_v)meta.notefloatRAOdegRight Ascension from input catalog (ra)degpos.eq.raDEOdegDeclination from input catalog (dec)degpos.eq.decTeff? Effective Temperature obtained by the cross correlation method (teff)Kstat.correlationdoublenullablee_Teff? Effective Temperature Uncertainty estimated with the method LASP used (teff_err)Kstat.error;phys.temperature.effectivedoublenullablelogg? Surface Gravity obtained by the cross correlation method (logg)log(cm.s**-2)stat.correlationdoublenullablee_logg? Surface Gravity Uncertainty estimated with the method LASP used (logg_err)log(cm.s**-2)stat.errordoublenullableZ? Metallicity obtained by the cross correlation method (m_h)stat.correlationdoublenullablee_Z? Metallicity Uncertainty estimated with the method LASP used (m_h_err)stat.error;src.redshiftdoublenullableEWHa? Halpha equivalent width (ewha)0.1nmspect.line.eqWidthdoublenullablee_EWHa? rms uncertainty on EWHa (ewha_err)0.1nmstat.errordoublenullableTiO5? Spectral index of TiO5 (tio5)spect.indexdoublenullableCaH2? Spectral index of CaH2 (cah2)spect.indexdoublenullableCaH3? Spectral index of CaH3 (cah3)spect.indexdoublenullableTiO1? Spectral index of TiO1 (tio1)spect.indexdoublenullableTiO2? Spectral index of TiO2 (tio2)spect.indexdoublenullableTiO3? Spectral index of TiO3 (tio3)spect.indexdoublenullableTiO4? Spectral index of TiO4(tio4)spect.indexdoublenullableCaH1? Spectral index of CaH1(cah1)spect.indexdoublenullableCaOH? Spectral index of CaOH(caoh)spect.indexdoublenullablee_TiO5? rms uncertainty on TiO5 (tio5_err)stat.errordoublenullablee_CaH2? rms uncertainty on CaH2 (cah2_err)stat.errordoublenullablee_CaH3? rms uncertainty on CaH3 (cah3_err)stat.errordoublenullablee_TiO1? rms uncertainty on TiO1 (tio1_err)stat.errordoublenullablee_TiO2? rms uncertainty on TiO2 (tio2_err)stat.errordoublenullablee_TiO3? rms uncertainty on TiO3 (tio3_err)stat.errordoublenullablee_TiO4? rms uncertainty on TiO4 (tio4_err)stat.errordoublenullablee_CaH1? rms uncertainty on CAH1 (cah1_err)stat.errordoublenullablee_CaOH? rms uncertainty on CaOH (caoh_err)stat.errordoublenullablezeta? Metallicity sensitive parameter (zeta)phys.abund.Zdoublenullablee_zeta? rms uncertainty on zeta (zeta_err)stat.errordoublenullableMA[0/1]? Magnetic activity (type)meta.codedoublenullableNA? Line index of Na Line (na)0.1nmspect.indexdoublenullableGaiaDR2? The "source_id" field of Gaia DR2 catalog (gaia_source_id)meta.idnullableGmag? The "phot_g_mean_magnitude" field of Gaia DR2 catalog (gaia_g_mean_mag)magphot.mag;em.optdoublenullableObs.DateTarget Observation Date (obsdate)time.epoch;obsnullableindexedTargetTarget designation, JHHMMSS.ss+DDMMSS.s (designation)meta.id;meta.maincharPlanIdPlan Name (planid)obs.fieldcharobjTypeObject Type (objtype)src.classcharClassSpectra Type (class)src.classcharsubClassStellar Sub-Class (subclass)src.classcharMJDModified Julian Day (mjd)time.epochintmagTypeTarget Magnitude Type (magtype)meta.notechartsourceOrganization or person who submit input catalog (tsource)meta.curationcharFiberTypeFiber Type of target (Obj, Sky, F-std, Unused, PosErr, Dead) (fibertype)meta.notechartfromInput catalog submitted by an organization or a person determined by the tsource (tfrom)obs.observerchartcommentTarget ID from SDSS, UCAC4, PANSTAR and other catalogues (tcomment)meta.notecharV/156/dr7melrsLAMOST LRS Multiple Epoch CatalogGaiaDR2? The "source_id" field of Gaia DR2 catalog (gaia_source_id)meta.idnullableGmag? The "phot_g_mean_magnitude" field of Gaia DR2 catalog (gaia_g_mean_mag)magphot.mag;em.optdoublenullableNobsObservation plan numbers for each target with multiple epoch observations (obs_number)meta.number;obs.param;obsintobsIDlistSpectrum ID List (obsid_list)meta.notecharmidmjmstModified Julian Minute List of the middle time of multiple exposure (midmjm_list)meta.notecharzlistRed Shift List (z_list)meta.notecharTefflistEffective Temperature List (teff_list)meta.notecharlogglistSurface Gravity List (logg_list)meta.notechar[Fe/H]listMetallicity List (feh_list)meta.notecharRVlistRadial Velocity List (rv_list)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLAMOSTUnique LAMOST source ID (source_id)meta.id;meta.mainRAJ2000Right Ascension (J2000) (ra)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000) (dec)degpos.eq.dec;meta.mainindexedV/156/dr7plrsLAMOST LRS Observed Plate Information CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPlateIdPlate ID (pid)meta.id;instr.plateintObsDateTarget Observation Date (obsdate)time.epoch;obsnullablePlanIdPlan Name (planid)obs.fieldcharRA1Right Ascension of center star (J2000) (ra)degpos.eq.ra;meta.mainDE1Declination of center star (J2000) (de)degpos.eq.dec;meta.mainmag1Magnitude of the first exposure (mag)magphot.magfloatSeeingSeeing of the first exposure (seeing)instr.obsty.seeing;obs.exposurefloatExpTimeThe total exposure time of n time exposures (exptime)stime.duration;obs.exposurecharMJMModified Julian Minute at the start time of each plate (lmjmlist)mintime.epochintV/156/dr7mrsLAMOST MRS General CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsIDUnique ID for each observation of each target (obsid)meta.idlongindexedMJDModified Julian Day (mjd)time.epochintspIdSpectrograph ID (spid)meta.id;instrintFiberIdFiber ID (fiberid)meta.idintLMJm? Local Modified Julian Minute (lmjm)time.epochintnullableRAJ2000Fiber Pointing Right Ascension (J2000) (ra_obs)degpos.eq.ra;meta.mainindexedDEJ2000Fiber Pointing Declination (J2000) (dec_obs)degpos.eq.dec;meta.mainindexedsnr? The median value of all pixel S/Ns in B band spectrum or R band (snr)stat.snrfloatnullablemag1? Magnitude in Band 1 of magType (mag1)magphot.magfloatnullablemag2? Magnitude in Band 2 of magType (mag2)magphot.magfloatnullableRAOdegRight Ascension from input catalog (ra)degpos.eq.raDEOdegDeclination from input catalog (dec)degpos.eq.decRVb0? Radial velocity of B band spectra measured with 483 selected KURUCZ synthetic templates (rv_b0)km/sphys.veloc;pos.heliocentricdoublenullablee_RVb0? Uncertainty of rv_b0 measured by the method LASP used (rv_b0_err)km/sstat.errordoublenullableRVb1? Radial velocity after zero-point correction of rv_b0 (rv_b1)km/sphys.veloc;pos.heliocentricdoublenullablee_RVb1? Uncertainty of rv_b1 measured by the error propagation (rv_b1_err)km/sstat.errordoublenullablef_RVb[0/3]? Radial velocity flag for B band spectra (rv_b_flag)meta.codeintnullableRVr0? Radial velocity of R band spectra measured with 483 selected KURUCZ synthetic templates (rv_r0)km/sphys.veloc;pos.heliocentricdoublenullablee_RVr0? Uncertainty of rv_r0 measured by the method LASP used (rv_r0_err)km/sstat.errordoublenullableRVr1? Radial velocity after zero-point correction of rv_r0 (rv_r1)km/sphys.veloc;pos.heliocentricdoublenullablee_RVr1? Uncertainty of rv_r1 measured by the error propagation (rv_r1_err)km/sstat.errordoublenullablef_RVr[0/3]? Radial velocity flag for R band spectra (rv_r_flag)meta.codeintnullableRVbr0? Radial velocity of B and R band spectra measured with 483 selected KURUCZ synthetic templates (rv_br0)km/sphys.veloc;pos.heliocentricdoublenullablee_RVbr0? Uncertainty of rv_br0 measured by the method LASP used (rv_br0_err)km/sstat.errordoublenullableRVbr1? Radial velocity after zero-point correction of rv_br0 (rv_br1)km/sphys.veloc;pos.heliocentricdoublenullablee_RVbr1? Uncertainty of rv_br1 measured by the error propagation (rv_br1_err)km/sstat.errordoublenullablef_RVbr[0/3]? Radial velocity flag for B and R band spectra (rv_br_flag)meta.codeintnullableRVlasp0? Radial velocity measured by the LASP (rv_lasp0)km/sphys.veloc;pos.heliocentricdoublenullablee_RVlasp0? Uncertainty of rv_lasp0 also given by the LASP (rv_lasp0_err)km/sstat.errordoublenullableRVlasp1? Radial velocity after zero-point correction of rv_lasp0 (rv_lasp1)km/sphys.veloc;pos.heliocentricdoublenullablee_RVlasp1? Uncertainty of rv_lasp1 measured by the error propagation (rv_lasp1_err)km/sstat.errordoublenullablecoadd[0/1] A flag to show whether it is a coadd spectrum (coadd)meta.codeintFiberMask[0]? Possible fiber problems (fibermask)meta.noteintnullablebadB[0/1] A flag to show whether the B band spectra is problematic (bad_b)meta.codeintBandHaving two values of B and R, which represent B and R band spectra (band)instr.bandpasscharobjTypeObject Type (objtype)src.classcharmagTypeTarget Magnitude Type (magtype)meta.notechartsourceOrganization or person who submit input catalog (tsource)meta.curationcharFiberTypeFiber Type of target (Obj, Sky, F-std, Unused, PosErr, Dead) (fibertype)meta.notechartfromInput catalog submitted by an organization or a person determined by the tsource (tfrom)obs.observerchartcommentTarget ID from SDSS, UCAC4, PANSTAR and other catalogues (tcomment)meta.notecharLMJDLocal Modified Julian Day (lmjd)time.epochintmag3? Magnitude in Band 3 of magType (mag3)magphot.magfloatnullablemag4? Magnitude in Band 4 of magType (mag4)magphot.magfloatnullablemag5? Magnitude in Band 5 of magType (mag5)magphot.magfloatnullablemag6? Magnitude in Band 6 of magType (mag6)magphot.magfloatnullablemag7? Magnitude in Band 7 of magType (mag7)magphot.magfloatnullableoffsets[0/1] Whether there is a fiber offset during observation (offsets)meta.noteintoffsetsvIf the 'offsets' field is true, 'offsets_v' gives the offset distance from the target's coordinator in input catalog (offsets_v)arcsecmeta.notefloatbadR[0/1] A flag to show whether the R band spectra is problematic (bad_r)meta.codeintGaiaDR2? The "source_id" field of Gaia DR2 catalog (gaia_source_id)meta.idnullableGmag? The "phot_g_mean_magnitude" field of Gaia DR2 catalog (gaia_g_mean_mag)magphot.mag;em.optdoublenullableObs.DateTarget Observation Date (obsdate)time.epoch;obsnullableindexedMObsIDUnique ID for each medium-resolution spectrum (mobsid)meta.idcharspDisplay the LaMOST spectrummeta.ref.urlcharTargetTarget designation, JHHMMSS.ss+DDMMSS.s (designation)meta.id;meta.maincharindexedPlanIdPlan Name (planid)obs.fieldcharV/156/dr7smrsLAMOST MRS A Star CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsIDUnique ID for each observation of each target (obsid)meta.idlongindexedLMJDLocal Modified Julian Day (lmjd)time.epochintmag6? Magnitude in Band 6 of magType (mag6)magphot.magfloatnullablemag7? Magnitude in Band 7 of magType (mag7)magphot.magfloatnullableoffsets[0/1] Whether there is a fiber offset during observation (offsets)meta.noteintoffsetsvIf the 'offsets' field is true, 'offsets_v' gives the offset distance from the target's coordinator in input catalog (offsets_v)arcsecmeta.notefloatRAOdegRight Ascension from input catalog (ra)degpos.eq.raDEOdegDeclination from input catalog (dec)degpos.eq.decTefflasp? Effective Temperature given by the LASP (teff_lasp)Kphys.temperature.effectivedoublenullablee_Tefflasp? Effective Temperature Uncertainty given by the LASP (teff_lasp_err)Kstat.errordoublenullablelogglasp? Surface Gravity given by the LASP (logg_lasp)log(cm.s**-2)phys.gravitydoublenullablee_logglasp? Surface Gravity Uncertainty given by the LASP (logg_lasp_err)log(cm.s**-2)stat.errordoublenullable[Fe/H]? Metallicity given by the LASP (feh_lasp)phys.abund.Zdoublenullablee_[Fe/H]? Metallicity Uncertainty given by the LASP (feh_lasp_err)stat.error;phys.abund.Fedoublenullablevsini? Projected Rotation Velocity given by the LASP (vsini_lasp)km/sphys.veloc.rotatdoublenullableRVb0? Radial velocity of B band spectra measured with 483 selected KURUCZ synthetic templates (rv_b0)km/sphys.veloc;pos.heliocentricdoublenullablee_RVb0? Uncertainty of rv_b0 measured by the method LASP used (rv_b0_err)km/sstat.errordoublenullableRVb1? Radial velocity after zero-point correction of rv_b0 (rv_b1)km/sphys.veloc;pos.heliocentricdoublenullablee_RVb1? Uncertainty of rv_b1 measured by the error propagation (rv_b1_err)km/sstat.errordoublenullablef_RVb[0/3]? Radial velocity flag for B band spectra (rv_b_flag)meta.codeintnullableRVr0? Radial velocity of R band spectra measured with 483 selected KURUCZ synthetic templates (rv_r0)km/sphys.veloc;pos.heliocentricdoublenullablee_RVr0? Uncertainty of rv_r0 measured by the method LASP used (rv_r0_err)km/sstat.errordoublenullableRVr1? Radial velocity after zero-point correction of rv_r0 (rv_r1)km/sphys.veloc;pos.heliocentricdoublenullablee_RVr1? Uncertainty of rv_r1 measured by the error propagation (rv_r1_err)km/sstat.errordoublenullablef_RVr[0/3]? Radial velocity flag for R band spectra (rv_r_flag)meta.codeintnullableRVbr0? Radial velocity of B and R band spectra measured with 483 selected KURUCZ synthetic templates (rv_br0)km/sphys.veloc;pos.heliocentricdoublenullablee_RVbr0? Uncertainty of rv_br0 measured by the method LASP used (rv_br0_err)km/sstat.errordoublenullablePlanIdPlan Name (planid)obs.fieldcharRVbr1? Radial velocity after zero-point correction of rv_br0 (rv_br1)km/sphys.veloc;pos.heliocentricdoublenullablee_RVbr1? Uncertainty of rv_br1 measured by the error propagation (rv_br1_err)km/sstat.errordoublenullablef_RVbr[0/3]? Radial velocity flag for B and R band spectra (rv_br_flag)meta.codeintnullableRVlasp0? Radial velocity measured by the LASP (rv_lasp0)km/sphys.veloc;pos.heliocentricdoublenullablee_RVlasp0? Uncertainty of rv_lasp0 also given by the LASP (rv_lasp0_err)km/sstat.errordoublenullableRVlasp1? Radial velocity after zero-point correction of rv_lasp0 (rv_lasp1)km/sphys.veloc;pos.heliocentricdoublenullablee_RVlasp1? Uncertainty of rv_lasp1 measured by the error propagation (rv_lasp1_err)km/sstat.errordoublenullablecoadd[0/1] A flag to show whether it is a coadd spectrum (coadd)meta.codeintalphacnn? Alpha element abundance (alpha_m_cnn)pos.eq.radoublenullableTeffcnn? Effective Temperature estimated by the CNN method (teff_cnn)Kphys.temperature.effective;meta.modelleddoublenullableloggcnn? Surface Gravity estimated by the CNN method (logg_cnn)log(cm.s**-2)phys.gravity;meta.modelleddoublenullable[Fe/H]cnn? Metallicity estimated by the CNN method (feh_cnn)phys.abund.Fedoublenullable[C/Fe]? Individual Element abundance of [C/Fe] estimated by the CNN method (c_fe)phys.abunddoublenullable[N/Fe]? Individual Element abundance of [N/Fe] estimated by the CNN method (n_fe)phys.abunddoublenullable[O/Fe]? Individual Element abundance of [O/Fe] estimated by the CNN method (o_fe)phys.abunddoublenullable[Mg/Fe]? Individual Element abundance of [Mg/Fe] estimated by the CNN method (mg_fe)phys.abunddoublenullable[Al/Fe]? Individual Element abundance of [Al/Fe] estimated by the CNN method (al_fe)phys.abunddoublenullable[Si/Fe]? Individual Element abundance of [Si/Fe] estimated by the CNN method (si_fe)phys.abunddoublenullable[S/Fe]? Individual Element abundance of [S/Fe] estimated by the CNN method (s_fe)phys.abunddoublenullable[Ca/Fe]? Individual Element abundance of [Ca/Fe] estimated by the CNN method (ca_fe)phys.abunddoublenullable[Ti/Fe]? Individual Element abundance of [Ti/Fe] estimated by the CNN method (ti_fe)phys.abunddoublenullable[Cr/Fe]? Individual Element abundance of [Cr/Fe] estimated by the CNN method (cr_fe)phys.abunddoublenullable[Ni/Fe]? Individual Element abundance of [Ni/Fe] estimated by the CNN method (ni_fe)phys.abunddoublenullable[Cu/Fe]? Individual Element abundance of [Cu/Fe] estimated by the CNN method (cu_fe)phys.abunddoublenullableGaiaDR2? The "source_id" field of Gaia DR2 catalog (gaia_source_id)meta.idnullableGmag? The "phot_g_mean_magnitude" field of Gaia DR2 catalog (gaia_g_mean_mag)magphot.mag;em.optdoublenullableObs.DateTarget Observation Date (obsdate)time.epoch;obsnullableindexedMObsIDUnique ID for each medium-resolution spectrum (mobsid)meta.idcharTargetTarget designation, JHHMMSS.ss+DDMMSS.s (designation)meta.id;meta.mainchartsourceOrganization or person who submit input catalog (tsource)meta.curationcharFiberTypeFiber Type of target (Obj, Sky, F-std, Unused, PosErr, Dead) (fibertype)meta.notechartfromInput catalog submitted by an organization or a person determined by the tsource (tfrom)obs.observerchartcommentTarget ID from SDSS, UCAC4, PANSTAR and other catalogues (tcomment)meta.notecharspIdSpectrograph ID (spid)meta.id;instrintFiberIdFiber ID (fiberid)meta.idintBandHaving two values of B and R, which represent B and R band spectra (band)instr.bandpasscharRAJ2000Fiber Pointing Right Ascension (J2000) (ra_obs)degpos.eq.ra;meta.mainindexedDEJ2000Fiber Pointing Declination (J2000) (dec_obs)degpos.eq.dec;meta.mainindexedsnr? The median value of all pixel S/Ns in B band spectrum or R band (snr)stat.snrfloatnullableobjTypeObject Type (objtype)src.classcharmagTypeTarget Magnitude Type (magtype)meta.notecharmag1? Magnitude in Band 1 of magType (mag1)magphot.magfloatnullablemag2? Magnitude in Band 2 of magType (mag2)magphot.magfloatnullablemag3? Magnitude in Band 3 of magType (mag3)magphot.magfloatnullablemag4? Magnitude in Band 4 of magType (mag4)magphot.magfloatnullablemag5? Magnitude in Band 5 of magType (mag5)magphot.magfloatnullableMJDModified Julian Day (mjd)time.epochintV/156/dr7pmrsLAMOST MRS Observed Plate Information CatalogPlanIdPlan Name (planid)obs.fieldcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPlateIdPlate ID (pid)meta.id;instr.plateintObsDateTarget Observation Date (obsdate)time.epoch;obsnullableRA1Right Ascension of center star (J2000) (ra)degpos.eq.ra;meta.mainDE1Declination of center star (J2000) (de)degpos.eq.dec;meta.mainmag1Magnitude of the first exposure (mag)magphot.magfloatSeeingSeeing of the first exposure (seeing)instr.obsty.seeing;obs.exposurefloatExpTimeThe total exposure time of n time exposures (exptime)stime.duration;obs.exposurecharMJMModified Julian Minute at the start time of each plate (lmjmlist)mintime.epochchar