J/ApJS/244/27ivo://CDS.VizieR/J/ApJS/244/27doi:10.26093/cds/vizier.22440027CDSWang R.Luo A.-L.Chen J.-J.Bai Z.-R.Chen L.Chen X.-F.Dong S.-B.,Du B.Fu J.-N.Han Z.-W.Hou J.-L.Hou Y.-H.Hou W.Jiang D.-K.,Kong X.Li L.-F.Liu C.Liu J.-M.Qin L.Shi J.-R.Tian H.Wu H.,Wu C.-J.Xie J.-W.Zhang H.-T.Zhang S.Zhao G.Zhao Y.-H.Zhong J.,Zong W.-K.Zuo F.2021-09-13T14:12:13Z2020-03-20T09:16:42ZCDS support team

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

cds-question@unistra.frradial-velocitymetallicityvisible-astronomyspectroscopynarrow-band-photometryThe radial velocity (RV) is a basic physical quantity that can be determined through the Doppler shift of the spectrum of a star. The precision of the RV measurement depends on the resolution of the spectrum we used and the accuracy of wavelength calibration. In this work, radial velocities of the Large Sky Area Multi-Object Fibre Spectroscopic Telescope-II (LAMOST-II) medium-resolution (R~7500) spectra are measured for 1,594,956 spectra (each spectrum has two wavebands) through matching with templates. A set of RV standard stars are used to recalibrate the zero point of the measurement, and some reference sets with RVs derived from medium-/high-resolution observations are used to evaluate the accuracy of the measurement. By comparing with reference sets, the accuracy of our measurement can get 0.0277km/s with respect to radial velocities of standard stars. The intrinsic precision is estimated with the multiple observations of single stars, which can be achieved to 1.36km/s, 1.08km/s, and 0.91km/s for the spectra at signal-to-noise levels of 10, 20, and 50, respectively.2019ApJS..244...27Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/244/27CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/279 : RAVE 5th data release (Kunder+, 2017)I/345 : Gaia DR2 (Gaia, 2018)V/164 : LAMOST DR5 catalogs (Luo+, 2019)J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009)J/A+A/524/A10 : Radial Velocity standard stars (Crifo+, 2010)J/other/RAA/11.924 : Atmospheric parameters for 771 stars (Wu+, 2011)J/A+A/552/A64 : Gaia-RVS standards (Soubiran+, 2013)J/AJ/150/97 : Radial velocities in M67. I. Candidate members (Geller+, 2015)J/A+A/616/A7 : Gaia DR2 radial velocity standard stars cat. (Soubiran+, 2018)J/AJ/156/90 : New cat. of APOGEE RVel standard stars (Huang+, 2018)J/A+A/622/A114 : Detached eclipsing binaries MITSuME photom. (Helminiak+, 2019)J/A+A/624/A68 : 47 single-line eclipsing binaries BEBOP veloc. (Martin+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/244/27https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/244/27http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/244/27https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/244/27https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/244/27http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/244/27GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/244/27/lamostMRS (The LAMOST medium-resolution radial velocities catalog (LAMOST MRS RV))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/244/27/lamostMRS?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/244/27/lamostMRS?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/244/27/lamostMRS?GETtext/xml+votable180.050000true15.4742963.82280050.0055555555555555563/375 4/19-21 23 25 28-29 48 54 63-65 67 88-89 91 96 107-108 113 120 122-123 152 176 183 189-190 196 203 208-210 224 267 270-271 280 282 291 293 296 304 354 358-359 362 385 387 391 414 422 426 458 526 562 610 667 686 708 835 841 858 880 887 891 893-894 934 944 1087 1116 1127 1130 1173 1387 1390 1399 1469 1477 1485 1497 1499 1505 1515 1518 1521 1524 1625 1641 1661 1687 1692-1693 1708 1718 1730 1752 1986 5/30-31 42 75 89-91 97 99 104-106 108 120-121 124 128 131 134 137 139-140 142 149 151 198-199 205 207 210 247 264-266 278 280-281 283-286 290-292 294 297 299-300 321 323-324 326 335 339-340 342 344-346 348 360-361 363 368 405 407 418 423-424 439-440 442-443 448-449 458-459 462-463 484 486-487 498-499 501-505 508-510 565 567 586-587 598-599 604-605 618-619 622 629-631 633 636 645 647 653 656 658 708 725-727 731 747 749-751 753-755 772-773 781 783 792 794 797 799 809 811 821 826 829-831 844 872-874 900-901 904 906 912 916-917 928 931 934 960 1056 1063 1065-1067 1072 1074-1075 1078-1079 1093 1095 1104-1106 1126 1132 1134 1152 1156 1158-1159 1161 1163 1169-1171 1176-1178 1188-1189 1195 1198-1200 1210-1211 1222 1224-1225 1273 1275-1276 1278 1335 1341 1343 1378 1384 1401-1403 1420 1425-1427 1431 1446 1452 1465-1468 1474 1480 1488-1490 1537 1552-1553 1555 1558 1561 1563 1570 1572 1585 1588-1590 1608 1610-1611 1632-1633 1635-1638 1643-1644 1646 1654 1660 1679 1699 1701 1708 1721-1725 1727-1729 1732 1754-1755 1765 1768-1770 1772 1776 1797 1799 1808 1836 1838 1842-1843 1846 1857 1859-1860 1862 1865 1920-1921 1923-1926 1981-1983 2024-2026 2167 2173 2192-2193 2210 2253 2258 2264-2266 2298-2299 2338 2344 2461 2463-2465 2477-2479 2481-2483 2488 2490 2497-2499 2504-2505 2510 2521-2523 2529-2534 2536-2538 2544-2546 2567-2568 2570-2571 2573 2575 2578 2584 2586 2592 2614-2615 2619-2622 2629 2640-2642 2656 2658-2659 2662-2663 2665 2667 2694-2695 2699-2702 2704-2706 2720-2722 2742-2743 2748 2753 2756 2820-2821 2840 2842-2843 2853-2855 2857 2860-2861 2863-2866 2872 3158-3159 3164-3166 3329 3332 3334-3335 3357 3359 3372 3400-3402 3412-3414 3427 3429-3430 3475 3478 3527 3533 3536 3538 3541 3543-3544 3547 3554-3555 3560-3561 3563 3571 3580-3582 3666-3667 3670 3672-3674 3691 3694-3695 3706 3731 3733-3735 3740 3742 3780-3782 3784-3785 3788 3806-3807 3813-3815 3820 3824-3826 3828-3829 3851-3852 3854 3877 3888 3905 3908 3920-3922 3978 4343 4479 4503 4526 4533-4535 4541 4546 4552 4554 4564-4565 4576 4578-4579 4584-4585 4587-4588 4590 4689 4691 4778 4787-4788 4790-4791 4796-4797 4829 4831 4864-4865 4867-4868 4870 4879 4888 4890-4891 4899 4901-4902 4905 4908 4912-4913 4935 4944 4946 5000 5002 5035 5038 5094 5097 5100 5339 5342-5343 5350-5351 5356-5357 5361 5364-5366 5466-5467 5470-5471 5488-5489 5491-5493 5495 5503 5512 5514-5515 5528-5529 5531-5532 5534 5536-5537 5553 5555-5558 5566-5567 5589 5620-5621 5703 5708-5709 5715-5716 5718-5720 5724-5725 5778-5779 5782 5785 5867 5870 5875 5881-5884 5886 5905 5918 5933-5935 5937-5939 5944-5946 5948 5952 5954 5965 5967 5976 5978 5985 5987 5993 6019 6028 6058-6059 6067 6070-6071 6081 6083 6094-6095 6100 6110-6111 6113-6118 6120-6121 6129 6131-6134 6427-6428 6430-6431 6452-6453 6461 6498-6499 6504-6506 6508 6542 6549-6551 6557 6561 6569 6572-6574 6576 6578 6584 6594 6600 6745-6747 6777 6780-6782 6811-6812 6814-6815 6836-6837 6861 6863 6867 6870 6876 6878 6896-6897 6900 6906 6913-6915 6918 6924 6944-6945 6965 6967 6993 7007 7022-7023 7029 7108-7109 7111 7120 7159 7507 7510-7511 7950 7968-7969 7983 7994-7995 8080-8081 8095 8136 8138-8139 8160 12287 6/103 109 111 113-115 118-119 162 212 246-247 251 253-255 260-261 272 277 279 285 294-295 297-299 353-355 384-385 387 395 428-430 436-438 500 511 520 523 542 545 547 553 564-566 572 574 593 595 601 603 628 784 786 800-801 803-805 817 819 825 846 853-855 860-861 863 885 916-917 960-961 1088-1090 1096 1098 1102-1103 1118 1128-1130 1148 1150 1154 1159 1172-1173 1180 1182 1185 1187 1193-1195 1204 1206 1209 1220-1221 1232-1233 1239 1245 1247 1269 1278-1279 1281 1283 1289 1291 1300 1302 1308 1313 1316-1317 1323 1326-1328 1333-1335 1337-1339 1349-1351 1353-1355 1364 1366 1372 1374 1388-1390 1400 1449-1451 1480 1482 1504 1506 1512 1514 1552 1554 1560 1568-1569 1572 1617 1619 1625 1627 1643 1646-1647 1649 1652-1653 1663 1685 1687 1691 1703-1706 1709 1711 1749-1751 1764 1766-1767 1780-1781 1783-1784 1786 1791 1800-1802 1805 1807 1827 1829-1831 1840-1841 1843-1844 1846 1856 1858 1864 1940-1942 1986-1987 2024 2026 2028-2029 2044 2046 2175 2282-2283 2292-2293 2303 2339 2342-2343 2360 2362 2383 2387 2390-2391 2405 2407 2413 2424-2425 2448 2464-2465 2468 2470-2471 2482-2483 2492 2494 2509-2511 2513-2515 2548-2550 2579 2585 2587 2609 2628 2630 2636 2638 2645 2647 2653-2658 2676-2677 2840-2842 2848-2849 2852-2853 2895 2898-2899 2974-2975 2985-2987 2993-2995 3056 3066-3067 3074 3077 3079-3080 3082 3101-3103 3121 3123 3129 3131 3152 3154 3157 3159 3165-3167 3172 3174 3180 3185 3187 3193 3195 3202 3208 3210 3215 3217 3220-3221 3226-3227 3230-3231 3242-3243 3281 3283 3295-3296 3298-3299 3302-3303 3308-3309 3311 3315 3380-3382 3384-3386 3388 3392 3456-3458 3466-3467 3470-3471 3500-3501 3608-3609 3612 3620 3622 3653-3656 3673 3676-3677 3718-3720 3728 3730-3732 3735 3740-3742 3749 3760 4136 4138-4139 4228 4230 4232-4234 4238-4239 4245-4247 4249-4251 4258 4294 4307 4310-4311 4428-4430 4449 4498 4510 4532 4534-4535 4540 4612-4614 4616 4618 4622-4623 4628 4630-4631 4642 4648 4650-4651 4673-4675 4716-4718 4724-4725 4760 4762 4768-4769 4772-4773 4804 4834-4835 4838-4839 4856 4858 4880 4882 4912 4914 4989 4991 5070-5071 5082-5083 5089 5091 5096-5097 5099 5108 5110 5116 5361 5363 5369 5507 5516 5518 5540 5542 5544 5546 5567 5601 5603 5646-5647 5658 5661 5663 5685 5688-5690 5697-5699 5712 5714-5715 5720 5722-5723 5760-5761 5763-5766 5771 5773-5776 5815-5818 5821-5825 5828-5829 5835 5837-5841 5844 5848 5850-5851 5857-5859 5880-5882 5909 5911 5917 5919 5928 5964 6063 6074-6075 6156-6157 6159 6181 6183 6189 6191 6216-6217 6219 6224 6226-6227 6230 6236 6238-6242 6248 6250 6272 6274 6277 6292-6294 6304 6348-6349 6351 6436 6438 6458-6459 6462-6463 6465 6468-6469 6480 6537 6539 6556-6558 6564-6565 6567 6569 6571 6582 6588 6590 6603 6605-6607 6622 6644 6646-6650 6653 6655 6768 6770 6776 6795 6808 6810-6811 6836 6840 6848-6850 6852 6862-6863 6873-6876 6878-6879 6881-6883 6904-6906 6920-6921 6924-6925 6932 6936 6973-6975 6997 6999 7032 7034 7051 7054-7055 7059 7066-7070 7084-7086 7092 7096 7108 7110 7112 7147 7150 7169 7172-7173 7185 7187 7192-7193 7195 7236-7237 7240-7242 7307 7322-7323 7351 7358 7363 7366-7367 7378 7392 7394-7395 7397-7401 7404-7405 7408 7410 7435 7444 7446 7452 7457 7459 7472 7474 7689 7691 7708 7710 7713 7716-7717 7728 7903 7921-7923 8074-8075 8078-8079 8108 8375 8381 8383 8434 8440 8442 8662-8663 8665 8667 8689 8691 8700-8701 8725 8784 8823 8829 8832 8834-8835 8864 8971 8974-8975 8991 9008 9010-9011 9016-9018 9020-9021 9023 9036 9038-9039 9068-9070 9072 9074 9085 9087-9089 9092-9094 9104 9149-9152 9173 9175 9186-9187 9190 9346-9347 9356 9358 9380 9382 9384 9776 9778 9784 9786 9819 9821 9823 9835 9838-9839 9841 9843 9849-9851 9872 9885 9887 9907 9921-9923 9936 9938 9940-9941 9944 9946 9951 9956-9958 9966-9967 9973 9975 9981 9983 9986-9987 10000 10002 10008 10010 10024-10026 10028 10031-10032 10044 10046-10047 10062-10063 10081-10083 10096 10098 10104 10106 10115 10140-10141 10156-10158 10160-10161 10188 10276 10278-10279 10289 10291 10316 10318-10319 10340-10342 10348 10372 10445 10447 10450-10451 10453-10455 10469-10471 10473-10475 10492 10494 10524-10525 10527 10539 10572 10628 10630 10656-10657 10659 10665 10667 10767 10771 10773-10775 10789-10791 10793-10795 10812-10814 10828-10830 10832-10834 10848-10850 10852 10892-10894 10896-10898 10912-10913 10958-10959 10996-10998 11000-11001 11009 11011 11028 11289 11292-11293 11295 11317 11327 11344 11346 11352 11354 11364-11366 11384 11386 11406-11407 11410-11411 11436-11437 11448-11449 11468-11470 11472 11492 11494 11496-11498 11520-11521 12288-12289 12292 12621 12623 12627 12645 12647 12653 12668-12670 13313 13315 13322 13324-13325 13327 13332 13334 13344 13346 13349 13351 13384 13386 13407-13410 13416 13445 13447 13453 13455 13477 13492-13494 13504 13506 13512 13514 13525 13559 13565 13567 13577-13580 13582-13583 13612-13614 13627 13629-13631 13637 13639 13645 13660-13662 13672 13674-13675 13680 13696-13697 13706-13707 13713-13715 13724-13726 13744 13746 13752 13760 13762 13768 13802-13803 13806 13823 13906-13907 13910 13916 13918 13924-13925 13936-13938 14047 14069 14101 14103 14112-14113 14140-14141 14148 14150 14156 14158 14169 14171 14180-14181 14183-14184 14211 14214 14249 14251 14277-14279 14283 14332-14334 14590-14591 14623 14645 14647 14653 14662-14663 14674 14700-14702 14704-14706 14762-14763 14775 14818-14819 14822 14828 14830 14922-14923 14929-14931 14964 14972 15040 15132 15144 15168-15169 15215 15245-15247 15250-15251 15268-15269 15271 15284 15308-15309 15320-15321 15324-15325 15398-15399 15412 15414 15420 15422-15423 15466-15467 15505 15507 15513 15516-15517 15556 15558 15560-15561 15617 15619 15625 15628-15629 15636 15640 15675 15678 15692-15694 15696 15698 15713 15722 15761 15767 15808 15810 16000-16002 17371 17391 17727 17769-17771 17774-17775 17813 17815 17821 17872 17874 17880 17882 17889 17892-17893 17906-17907 17910-17913 17915 18006 18009 18023 18029 18031 18058-18059 18098 18128-18129 18131 18160-18161 18163 18172-18173 18188 18190 18212 18214 18222 18268-18269 18328 18330-18331 18344-18345 18347 18789 18800-18801 18804 19106-19107 19110 19116 19118 19141-19143 19158-19159 19172-19173 19175 19192-19193 19196 19291 19294-19295 19313-19315 19320-19321 19323 19409 19412-19413 19464-19465 19467 19492-19493 19504 19509-19511 19556 19558-19559 19590-19591 19593 19595 19602-19603 19612 19614-19615 19629 19636-19637 19640-19641 19733 19735 19765 19780 19782-19783 19788-19790 19808-19809 19812 19978 20006 20012 20014 20096-20097 20134-20135 20137 20139 20146-20147 20156 20158 20363 20365-20367 20380 20385 20387 20396-20397 20399 20404 20408 20475 20478-20479 21351 21353 21355 21362 21365-21367 21391 21395-21396 21398-21399 21413 21415 21433 21436 21441 21443 21448 21450 21452-21453 21468 21472 21859 21862-21863 21878 21961 21976-21978 22009-22011 22052 22054-22055 22086 22089-22092 22094-22095 22104 22106-22107 22121 22123 22170-22171 22174-22175 22181 22183 22189 22209 22211 22218-22219 22236-22238 22258 22352-22353 22355 22361 22364-22365 22367 22375 22381 22383 22440 22442-22443 22469 22493 22495 22803 22806-22807 22809-22811 22841 22844-22845 22853-22856 22858-22859 22870-22871 22884-22885 22887-22888 23106-23107 23110 23122 23136-23137 23139 23148-23149 23152-23154 23418-23419 23422 23459 23462-23465 23467 23474 23485 23487 23492 23494-23495 23521-23523 23540-23542 23548 23550-23551 23569 23572-23573 23616-23617 23619 23661-23663 23676 23678-23679 23725 23727 23729 23731 23747 23788-23789 23796 23800 23859 23865 23867 23910 23916 23918-23919 23930 23939 23945 23947 23969 23981-23983 24070-24071 24101 24116-24118 24128-24130 24219 24222-24223 24226-24227 24230 24262-24263 24265-24267 24274-24275 24304-24305 24308-24309 24311 24321 24323 24329 24356-24357 24366-24369 24372-24373 24375 24404-24405 24408 24410 24416-24418 24420-24421 24424 24426 24429-24431 24450-24451 24476 24478 24488 24495-24497 24506-24507 24512 24540-24542 24567 24573 24575 25703 25716 25718-25719 25797 25799 25820 25822-25823 25853 25896 25898 25984 25986-25987 25990-25991 26028-26030 26036-26038 26157-26159 26172 26174-26175 26189 26193 26195 26224-26225 26227 26237 26253-26255 26285 26300-26302 26310 26316 26318-26319 26340 26370 26491 26494-26495 26595 26599 26602-26603 26605-26609 26612-26614 26618 26973 26975 26979 27029-27031 27037 27039 27104-27105 27116-27117 27119 27132-27134 27241-27243 27252 27254-27255 27285 27287 27293 27352-27354 27361 27364-27365 27422-27423 27426 27432 27434 27441 27443 27449 27451 27465-27467 27486 27508 27510 27516 27518 27520 27522 27540-27541 27581-27583 27596-27597 27604 27606 27608-27609 27630 27649-27651 27664 27666-27667 27775 27784-27785 27788 27893 27946-27947 27950 27970-27971 27980-27981 27986 28021-28023 28025 28027 28064-28065 28068-28069 28079 28083 28086-28087 28136 28138 28421 28423 28440-28441 28443 28488 28629-28631 28660-28661 30022-30023 30034-30035 30038 30064-30065 30068 31095 31101 31103 31794 31888-31890 31927 31970-31971 31974 32276-32277 32279 32285 32328-32329 32332-32333 32374-32375 32468-32469 32471 32548 32550-32551 32644-32646 49142-491431.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/244/27?format=asciiOpticaldefaultJ/ApJS/244/27/lamostMRSThe LAMOST medium-resolution radial velocities catalog (LAMOST MRS RV)spId[1/16] Spectrograph IDmeta.id;instrintRVbc[-571/583] RV with zero-point corrected for the blue part (see Section 4.1)km/sspect.dopplerVelocfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaia? Gaia DR2 identifier when availablemeta.id.crossdoublenullableLAMOSTLAMOST identifier (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharmedIDLAMOST spectral ID (Date-PlateID- SpectrographID-FiberID-MJM_PiplineVersion)meta.idcharmedIDbLAMOST spectral ID for the blue partmeta.idcharmedIDrLAMOST spectral ID for the red partmeta.idcharDateDate of the observationtime.epochnullableLampLamp used for wavelength calibrationinstr.setupcharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[-10/79.1] Declination (J2000)degpos.eq.dec;meta.mainindexedSNRb[10/618] Signal-to-noise ratio of the blue partstat.snrfloatSNRr[10/667] Signal-to-noise ratio of the red partstat.snrfloatRVb[-572/577] RV measured from the blue part without zero-point correctionkm/sspect.dopplerVelocfloate_RVb[-121/391] RVb uncertaintykm/sstat.errorfloatRVr[-546/591] RV measured from the red part without zero-point correctionkm/sspect.dopplerVelocfloate_RVr[-10/318] RVr uncertaintykm/sstat.errorfloatRVrc[-546/592] RV with zero-point corrected for the red part (see Section 4.1)km/sspect.dopplerVelocfloatbcorr[0.924/1] Correlation coefficient between the blue part and the best-fit templatestat.correlationfloatrcorr[0.919/1] Correlation coefficient between the red part and the best-fit templatestat.correlationfloatTeffb[3500/10000] Effective temperature of the best-fit template of the blue partKphys.temperature.effective;meta.modelledfloatloggb[0/5] Surface gravity of the best-fit template of the blue partlog(cm.s**-2)phys.gravity;meta.modelledfloat[Fe/H]b[-4/0.5] [Fe/H] of the best-fit template of the blue partphys.abund.Fe;meta.modelledfloatTeffr[3500/10000] Effective temperature of the best-fit template of the red partKphys.temperature.effective;meta.modelledfloatloggr[0/5] Surface gravity of the best-fit template of the red partlog(cm.s**-2)phys.gravity;meta.modelledfloat[Fe/H]r[-4/0.5] [Fe/H] of the best-fit template of the red partphys.abund.Fe;meta.modelledfloatFlb[0] Quality flag for accessing RV derived from the blue part, 0 for good (always "0")meta.code.qualintFlr[0/1] Quality flag for accessing RV derived from the blue part (0=good, 1=bad)meta.code.qualintGmag[4.5/21.2]? G magnitude from Gaia DR2magphot.mag;em.opt.Vdoublenullablebp-rp[-0.6/6]? bp-rp color index from Gaia DR2magphot.color;em.opt.B;em.opt.Rfloatnullable