Radial velocity variable stars from LAMOST DR4 J/ApJS/249/22 ivo://CDS.VizieR/J/ApJS/249/22 doi:10.26093/cds/vizier/bb-7s-p CDS Tian Z. Liu X. Yuan H. Fang X. Chen B. Xiang M. Huang Y. Bi S.,Yang W. Wu Y. Wang C. Zhang H. Huo Z. Yang Y. Liu G. Guo J. Zhang M. 2026-08-03T07:24:46Z 2020-11-20T10:09:35Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr variable-stars radial-velocity visible-astronomy spectroscopy surveys astronomical-object-identification Radial velocity (RV) variable stars are important in astrophysics. The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectroscopic survey has provided ~6.5 million stellar spectra in its Data Release 4 (DR4). During the survey ~4.7 million unique sources were targeted and ~1 million stars observed repeatedly. The probabilities of stars being RV variables are estimated by comparing the observed RV variations with simulated ones. We build a catalog of 80702 RV variable candidates with probability greater than 0.60 by analyzing the multi-epoch sources covered by LAMOST DR4. Simulations and cross-identifications show that the purity of the catalog is higher than 80%. The catalog consists of 77% binary systems and 7% pulsating stars as well as 16% pollution by single stars. 3138 RV variables are classified through cross-identifications with published results in literatures. By using the 3138 sources common in both LAMOST and a collection of published RV variable catalogs, we are able to analyze LAMOST's RV variable detection rate. The efficiency of the method adopted in this work relies not only on the sampling frequency of observations but also periods and amplitudes of RV variables. With the progress of LAMOST, Gaia, and other surveys, more and more RV variables will be confirmed and classified. 2020ApJS..249...22T https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/249/22 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014) B/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017) III/218 : ELODIE archive (Prugniel+, 2001) V/133 : Kepler Input Catalog (Kepler Mission Team, 2009) I/345 : Gaia DR2 (Gaia Collaboration, 2018) V/153 : LAMOST DR4 catalogs (Luo+, 2018) II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020) J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006) J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010) J/ApJS/213/9 : Catalina Surveys periodic variable stars (Drake+, 2014) J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014) J/ApJS/220/19 : LAMOST obs. in the Kepler field. I. (De Cat+, 2015) J/MNRAS/448/822 : LAMOST candidate members of star clusters (Xiang+, 2015) J/ApJS/232/16 : Mira stars discovered in LAMOST DR4 (Yao+, 2017) J/AJ/154/94 : APOGEE-2 data from DR16 (Majewski+, 2017) J/AJ/156/90 : New cat. of APOGEE RV standard stars (Huang+, 2018) J/AJ/156/18 : APOGEE DR14: evolved star companions (Price-Whelan+, 2018) J/A+A/616/A7 : Gaia DR2 RV standard stars catalog (Soubiran+, 2018) J/A+A/622/A60 : Gaia DR2 misclassified RR Lyrae list (Clementini+, 2019) J/other/RAA/19.64 : LAMOST spectrosc. binaries & variable stars (Qian+, 2019) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/249/22 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/249/22 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/249/22 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/249/22 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/249/22 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/249/22 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJS/249/22/catalog (Catalog of radial velocity (RV) variable star candidates) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/249/22/catalog? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/249/22/catalog? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/249/22/catalog? GET text/xml+votable 180.0 50000 true 0.0170327 56.0176468 0.005555555555555556 Cone search capability for table J/ApJS/249/22/epochs (Measurements per epoch (extracted from catalog.dat by CDS)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/249/22/epochs? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/249/22/epochs? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/249/22/epochs? GET text/xml+votable 180.0 50000 true 0.0170327 56.0176468 0.005555555555555556 3/41 77 96 4/31 47 51 54 72 74-75 80-81 83 92 94 103 105-106 109-110 115-116 119-121 134 137-139 141 143 150 153 161 168 192 198 254 257 270-271 283 290 293-294 296-298 318-319 323-325 329 352 354 368 388 392-394 396 398 404 407 422-423 433-434 566 614 616 647 657 689 779 889 893 922-923 933 935 944-946 1247 1277 1363 1366 1371 1374-1375 1463 1495 1501 1519-1520 1522-1523 1529-1532 1643 1652 1687 1693 1702 1707 1728 1749-1750 1775 1777 1779-1780 1782 1786 5/4-5 7 55 63 71 75 81-84 86-87 89 92-93 95-97 99-100 104-105 107-108 110 115-116 118-119 121 123 152-154 176-177 179-180 182 193 196 212-213 221 223 229 231 237 239-240 242 245 247-248 250 256-258 260-261 264 266-270 274-277 279 281 292 294-295 304 306-307 310-312 314 317 329 336-337 340 342 344-345 347-348 350 353-354 356-357 366-367 372 374 380 382 384-386 388-389 395 398-399 405-407 417-419 428-429 433-435 444-446 452 454-455 459 468 470 472 475 488 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10057-10059 10067-10069 10071 10076-10078 10092-10093 10095 10100 10102 10114 10122 10125-10126 10129 10131 10144 10146-10147 10150-10151 10153 10155 10169-10171 10176 10178 10184 10189 10241-10244 10248 10258-10261 10263 10281-10283 10286 10295-10296 10301-10302 10305-10307 10332 10334 10337 10339-10342 10344-10345 10347 10372 10374-10375 10392 10394-10397 10399 10404-10406 10417-10419 10428 10431 10440-10441 10443-10445 10447 10452 10454-10455 10473 10475 10484-10486 10492 10495-10498 10500 10505-10507 10532-10533 10536 10538 10540-10541 10543 10545-10546 10548 10552 10560 10562-10564 10568-10570 10575 10577 10586-10587 10597 10601 10603 10605 10608 10615-10616 10625-10627 10632-10633 10635 10643 10645 10647 10665-10666 10668-10670 10680 10688-10689 10691 10694 10700 10703-10705 10707 10710 10716 10718-10720 10725-10726 10730 10732 10736-10737 10739 10744-10745 10747 10753-10757 10759 10768-10770 10785-10788 10790-10793 10797 10799 10801 10803 10824-10825 10827-10830 10836-10837 10848-10850 10856-10858 10861-10863 10874 10878 10881-10883 10888-10889 10891 10896 10898-10899 10908-10909 10911 10921 10928-10929 10931-10933 10952-10954 10957-10959 10976 10978-10980 10982-10983 10985 10991 10993-10995 11001-11003 11005-11007 11045 11057 11061 11067-11068 11072-11074 11077-11080 11083 11093-11095 11106-11107 11112-11113 11125-11128 11130 11133 11141-11143 11145 11147-11148 11153 11155-11156 11159 11163-11164 11170 11177-11179 11185-11187 11196-11197 11201 11203 11206 11271 11273-11275 11282 11288 11290-11291 11295-11297 11299-11301 11303 11312-11313 11316 11319 11325-11327 11329-11331 11333-11335 11344-11346 11350 11352-11354 11364-11366 11372-11374 11402 11409-11411 11416 11418-11419 11425 11433-11435 11444-11445 11458-11460 11462 11464 11523-11524 11527 11533 11784-11786 11789 11792 11794 11808 11810 11815-11817 11820-11821 11985 11987 11992 11994-11998 12005 12020 12160 12162 12369 12372-12374 12379 12431 12441-12443 12446-12447 12453 12455 12461 12502-12503 12514 12520 12548 12552 12554-12555 12577-12579 12602 12608-12609 12614-12615 12619 12626-12627 12636 12638-12639 12641 12652-12653 12664-12665 12667-12670 12673-12677 12683 12686 12688 12690 12698 12705 12707 12718 12720-12722 12730 12732-12733 12735 12746-12747 12750 12752-12753 12756-12757 12772 12775 12781 12790-12791 12796-12798 12828 12830-12831 12845 12856-12857 12860 13139 13346 13352-13353 13359 13387 13390-13391 13397 13406 13409-13411 13430-13434 13437-13442 13444 13474 13504-13505 13507 13515 13517-13518 13520 13523 13525-13527 13534 13539 13545 13552-13554 13560-13562 13570 13577 13600-13601 13604 13607 13610-13611 13613-13615 13617 13619 13625 13627 13629-13631 13648-13649 13653 13666 13672 13674 13695-13697 13700-13701 13715 13760 13762 13788 13886 13889 13892-13893 13971 13974 13983 14013-14015 14050-14052 14054 14056 14058-14059 14137 14139-14140 14142-14143 14165-14167 14169 14171 14189-14191 14193-14195 14221 14245 14256-14257 14259 14264-14265 14316-14318 14328-14329 14331-14334 14567 14577-14579 14585-14587 14727 14729-14731 14738-14739 14743 14787 14820-14822 14828 14830-14831 14850 14856 14863 14872 14874 14895-14897 14900 14902-14903 14906-14908 14910-14911 14924 14926-14927 14945-14947 14976 14981 14984 14991 14996-14997 14999-15000 15041-15042 15065 15067 15075 15079 15081 15084-15085 15089 15160-15162 15172 15180 15182 15200-15201 15232 15236 15242 15263-15264 15267 15273 15275-15278 15283 15302 15305 15320 15380-15381 15424 15433 15633 15657 15659 15680-15681 15745 15747 15753 15756-15757 15760-15762 15768 16253 16255 16341 16343 16349 16351 17637-17639 17652 17654-17655 17735 17746-17749 17751 17754 17769 17771 17778 17782 17813 17819 17822-17823 17832 17834 17840-17841 17848-17849 17853 17855-17857 17861 17863 17880-17881 17884-17885 17890 17892 17902-17903 17906 17912 17914-17915 17989 18004-18006 18014 18099 18102 18105-18108 18110 18133 18140 18143 18145 18151 18178-18179 18184-18185 18187 18190 18202-18203 18212 18214-18215 18220-18221 18223-18226 18229 18232 18234-18235 18247 18256 18258 18264 18293-18295 18304-18306 18308 18310-18311 18313-18316 18318-18319 18321 18325 18337 18339-18340 18342 18382-18383 18394-18395 18410-18413 18415 18420 18422 18428 18430-18431 18680-18682 18795-18798 18808 18810-18814 18833 18835 18838 18844 18846-18847 18862-18863 18866 18874-18875 18879 18894 18904-18905 18907-18908 18910-18911 18920 18922 18926 18935 18967 18973 18990 19008 19010 19014 19016 19025-19027 19032 19057 19060 19071 19077 19095 19101 19103 19125 19136 19138-19139 19141-19142 19161 19163-19166 19168 19172 19174-19175 19181 19188-19190 19198-19199 19202 19204-19205 19208 19213 19225-19226 19228-19229 19231 19237 19240 19244 19248 19251-19252 19260 19270 19274-19276 19290 19295-19297 19301 19304-19305 19318 19328 19330-19331 19333 19337 19340 19346 19361 19370 19397 19399 19404-19405 19407-19409 19411 19413 19416 19419 19422-19423 19434 19461 19472-19473 19475-19476 19478-19480 19482-19483 19487 19498 19508-19509 19522-19523 19528 19530 19553-19554 19558 19584 19586-19587 19592-19594 19596 19771 19774-19776 19779 19781-19783 19785 19788-19789 19796 19798-19801 19804-19805 19807 19814 19817-19819 19822 19832 19853 19855 19857 19862-19863 19867-19869 19875 19878 19884 19887 19903-19905 19907-19908 19910-19911 19913 19915 19927-19928 19931 19933-19934 19945-19947 19978 19992 19994 19999 20005 20016 20022-20023 20025 20027 20046-20047 20056 20064 20066 20069 20071 20076 20078-20080 20082-20083 20088-20090 20096 20113 20119 20124-20125 20134 20156 20161 20163-20166 20168-20169 20171-20173 20182-20185 20187-20189 20191 20197 20208 20210 20212 20214-20215 20217 20220-20221 20253 20255 20292-20294 20296-20298 20301 20304-20305 20308-20310 20319 20323 20331-20333 20335 20339-20340 20342 20360 20362-20363 20384-20386 20388 20390-20391 20395 20404 20412 20415 20417-20418 20425 20427 20429 20431 20453 20455 20475 21355 21358-21359 21434 21441 21443 21452-21453 21455-21456 21458-21459 21468 21470-21471 21477 21497 21500-21501 21619 21621-21623 21625 21628-21630 21713 21716-21717 21747 21750-21751 21753-21755 21767 21769 21777-21778 21780-21781 21783 21793-21795 21824-21825 21827 21837-21839 21842 21873-21875 21884-21885 21892-21893 21895 21897 21900 21902-21903 21912-21913 21915 21925 21928 21953-21954 21956 21958-21959 21968-21969 21971-21972 21974 21976 21978-21979 22096-22097 22099-22101 22103 22108 22139 22214 22218-22219 22227 22230-22231 22233-22235 22249 22252-22254 22264-22265 22267-22270 22274 22280 22285 22288-22289 22291 22309-22311 22320 22322-22323 22328-22329 22334 22336 22338 22350 22365-22367 22378-22379 22383 22391 22395 22397-22399 22402 22404 22406 22417 22419 22424 22431 22438-22439 22450-22451 22456-22458 22469-22470 22476 22488-22489 22491 22502 22513 22516-22517 22732 22734 22750 22755 22764-22765 22767-22768 22771 22774-22777 22779-22780 22782 22801 22806-22807 22809 22811 22833 22835 22837 22850 22860 22874 22879 22881-22883 22889 22891 22900 22902 22980-22981 22983 23001 23029-23031 23077-23079 23084-23085 23087 23092 23094-23095 23105 23109-23110 23122-23124 23126 23133 23135 23143 23152 23154 23159 23164 23166-23167 23173 23192-23193 23195 23213 23215 23219 23228 23230-23232 23234-23235 23240-23242 23245 23260 23268 23270-23271 23273 23275 23284 23286-23287 23306 23328 23330-23331 23340 23342-23343 23375 23388 23390-23391 23397 23399-23400 23405 23425 23428-23429 23468 23470 23475 23481-23483 23487 23506-23507 23510 23514 23518 23529-23531 23536 23548 23550 23555 23558 23593 23616 23619 23636-23637 23680 23682-23683 23692 23694-23695 23708 23716 23718 23721 23725 23727 23730 23733 23749-23751 23757 23762 23770-23771 23774 23776-23777 23783 23787-23788 23790-23791 23796 23802-23803 23805-23807 23809-23811 23816-23817 23821 23823 23837-23839 23860-23861 23863 23865 23867-23868 23870-23871 23876 23880-23882 23884-23885 23893-23895 23909 23912 23914-23916 23918-23919 23956-23957 23959 23968 23970-23971 23980 23982-23983 23994 23998-23999 24008-24009 24011 24036-24037 24056-24057 24059 24071 24077-24079 24085 24088 24090-24091 24093-24096 24098-24099 24104-24105 24116 24118-24119 24132 24134 24144-24145 24148 24151 24155 24161-24162 24164 24167 24172-24174 24178-24179 24184-24185 24187 24197 24199-24200 24202 24206-24207 24216-24217 24219 24225-24227 24232-24234 24236 24238-24239 24252 24254-24255 24264-24265 24267-24268 24270-24272 24274 24276-24277 24282-24283 24287 24300-24301 24303 24340 24342 24348 24350-24351 24404-24405 24407 24416 24418-24419 24430 24450 24457-24459 24528 24530-24531 24540 24542-24543 24549-24551 24556 24558 24560 24565 24567 25438 25461 25463 25555 25596-25597 25599 25814 25820 25822 25837 25839 25841 25871 25882 25893 25895 25903-25905 25917-25922 25924-25925 25939 25941 25945-25946 25960 25965 25967 25971 25985-25986 25988 25990 25994-25996 25998 26000-26001 26003 26006-26007 26018 26020-26021 26024-26025 26028 26031 26040 26042-26043 26049-26053 26055 26064 26072 26076 26084 26086-26088 26090-26091 26104-26105 26107-26108 26110 26132-26134 26140 26144 26146 26152 26156-26158 26178-26179 26183-26185 26187 26196 26199-26200 26202-26203 26205 26207 26209 26211-26214 26223-26225 26228-26229 26231-26232 26234-26236 26238 26243 26246 26255 26272-26273 26279 26281-26283 26314 26316-26317 26319 26324-26326 26336 26338 26368 26370 26373 26380 26382 26385 26387 26400 26402-26404 26407 26412 26414 26416 26428 26430-26431 26452 26454-26457 26459-26461 26472 26474 26476 26480-26481 26488 26501-26505 26522 26533 26540 26543 26545 26550-26551 26553 26555-26556 26558 26561 26590-26591 26596-26597 26608 26610-26611 26614-26617 26619 26622-26623 26844 26847 26859 26862 26869 26873 26875 26924-26926 26936 26939 26941 26943 26946-26947 26949 26953 26960 26962 26965 26967 26969-26971 26973-26975 26978 27008-27009 27011 27014 27018 27026 27028-27029 27031 27037-27040 27045 27053-27055 27057-27059 27073-27074 27081-27082 27085 27105-27106 27111-27112 27124-27125 27127-27129 27131 27148 27154 27171 27181-27183 27189-27191 27201 27203 27210-27211 27218 27220 27222 27225-27227 27254-27255 27266-27267 27272-27273 27275 27280-27282 27284-27285 27287 27292 27297-27299 27333-27338 27340-27341 27343 27356 27358-27359 27362 27368 27370 27384-27386 27389-27391 27396-27397 27406 27412 27414-27415 27417-27421 27427 27429-27432 27434 27440-27441 27443-27444 27449 27453-27455 27460-27461 27463 27470-27471 27476-27478 27481 27483 27491-27493 27495-27496 27498 27500 27504-27505 27507 27516 27518 27520 27524-27525 27532 27536-27537 27539 27545 27548 27550-27551 27555 27558 27560 27562 27564-27565 27569 27571-27572 27577-27578 27582 27588 27590 27596-27597 27600-27602 27608 27616 27632 27638-27639 27645 27665-27667 27672 27674-27675 27693-27696 27706 27718 27724 27726 27729 27743 27747 27752 27755 27760-27761 27763 27765-27767 27781-27785 27787-27790 27793-27794 27800 27812-27814 27822-27823 27826-27827 27834 27836-27838 27841 27868-27869 27876 27878-27881 27884 27898-27899 27909 27911 27927 27936 27938 27940 27953 27965-27967 27969-27971 27973-27975 28022 28028 28030-28031 28036 28040 28046-28047 28053 28057-28062 28065-28067 28069-28072 28074 28076 28081-28083 28088-28089 28091 28093-28095 28107-28109 28113-28116 28118-28119 28121 28123 28130 28132 28152-28154 28167 28176-28178 28180 28182-28183 28185-28187 28200-28201 28203 28212-28213 28215-28216 28224 28227 28236 28243 28252-28253 28255 28260-28261 28264-28265 28269-28272 28274 28276 28289 28292-28293 28302-28305 28307-28308 28310-28311 28320 28325 28328 28337-28340 28342 28346 28350 28355 28365 28368-28370 28374 28376 28378-28380 28382-28383 28385-28387 28421 28423 28449 28452-28453 28455 28461-28463 28500 28503 28540-28542 28554-28555 28561-28563 28600-28602 28604-28606 28616-28618 28636-28638 28644-28645 28647 28649 28651 28660 28667 30213-30215 30217 30219 30221-30224 30226 30232 30235 30238 30247 30258 30975 31055 31057-31060 31063-31064 31068-31069 31071 31084 31086 31096 31103 31146-31147 31150 31163 31177 31205 31263 31281 31283 31285-31287 31289 31297-31298 31319 31325 31335 31359 31370-31371 31380-31381 31384 31390-31392 31395 31398-31402 31404 31406 31408-31409 31411 31414-31416 31419 31424-31425 31427 31433 31435 31446 31448 31450-31451 31453 31457-31459 31464 31472-31474 31488-31490 31500-31502 31505 31516-31517 31527 31530-31533 31535 31537 31539 31543-31545 31547 31549-31550 31575 31581 31583 31586 31592 31604-31605 31618 31620-31622 31624-31625 31628 31636 31649 31663 31719 31728 31730 31739 31746 31752 31754-31755 31770 31780 31782-31783 31785-31787 31798 31888 31919 31930 31987 32183 32204 32254-32255 32259 32262 32268 32271 32273 32276 32282 32286 32289 32291 32297 32299 32308 32310 32316 32318 32322 32326 32343 32348-32349 32388-32389 32391 32404 32495-32496 32498-32502 32507-32510 32515 32521 32526-32527 32547-32548 32553 32556 32607 32617 32648 32682 32695 32719 32727 32731-32732 32734-32735 32739 32753-32754 32756 36828 36857 36863 40891 40905-40908 40910 40922 40934-40935 40944 40946 40951-40952 40955 40957-40959 45017 45022-45023 45035 45039 45041 45043 45049 45052-45053 45055 48997-48999 49005 49007-49008 49018 49020 49022 49095 49106 49109 49141 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/249/22?format=ascii Optical default J/ApJS/249/22/catalog Catalog of radial velocity (RV) variable star candidates dTeff [-18681/16743] {Delta}Teff between epochs with max and min RV (DTEFF) K phys.temperature.effective;arith.diff double dFeH [-3.3/3.8] {Delta}[Fe/H] between epochs with max and min RV (DFEH) phys.abund.Fe;stat.max;stat.min double Chi2 [0.16/1095] Chi square of RVs calculated with equation 4 (CHIS) (1) stat.fit.chi2 double RV [-939/777] Weighted radial velocity via equation 1 (WMRV) (2) km/s phys.veloc;stat.mean float e_RV [3/17.1] Weighted RV error via equation 3 (WMRVERR) (3) km/s stat.error float SpecId LAMOST unique spectral ID for epoch of target (SPEC_ID) meta.id;meta.main char RVmax [0/40] Index of RV_EPOCH responding for max RV (INDMM1) meta.number int RVmin [0/39] Index of RV_EPOCH responding for min RV (INDMM2) meta.number int PV [0.6/0.95] Probability of being a RV variable star stat.fit.goodness float Type Variability types src.var char KIC ? Kepler identifier (see V/133) meta.id.cross long nullable Gaia ? GAIA identifier for 203 sources (see I/345) (GAIA_SOURCE_ID) meta.id.cross nullable recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int RAJ2000 Right ascension (J2000) (RA) deg pos.eq.ra;meta.main indexed DEJ2000 [-9.5/87] Declination (J2000) (DEC) deg pos.eq.dec;meta.main indexed GLON Galactic longitude (L) deg pos.galactic.lon GLAT Galactic latitude (B) deg pos.galactic.lat double Nep [2/47] Number of epochs of the object (EPOCH) meta.number int Dur [0.0075/1611] Time span of observation for the object (DURATION) d obs.param;obs double DeltaT [-1603/1611] {Delta}t between epochs with max and min RV (DT) d time.interval double dRV [9.8/415] Maximum RV difference between any two epochs (DRV_MAX) km/s phys.veloc;arith.diff double dlogg [-5.15/4.82] logg between epochs with max and min RV (DLOGG) log(cm.s**-2) phys.gravity;arith.diff double OName VSX name (see B/vsx) for 3044 sources (VSX_NAME) meta.ref;pos.frame char GCVS GCVS Constellation numeric code (bytes 1-2), Star Number within constellation (bytes 3-6) (see B/gcvs) (GCVS_CON_NUM) meta.id char ASASSN-V ASAS-SN name for 2011 sources (see II/366) (ASASSN_NAME) meta.id.cross char LAMOST Display the LAMOST-DR4 data (V/153) meta.ref.url char RVc Interactive velocity plot meta.ref.url char
J/ApJS/249/22/epochs Measurements per epoch (extracted from catalog.dat by CDS) e_logg [0.05/0.42]? logg uncertainty (ERR_LOGG_EPOCH) log(cm.s**-2) stat.error double nullable Teff [3402/23942]? Effective temperature (TEFF_EPOCH) K phys.temperature.effective double nullable e_Teff [58/660]? Teff uncertainty (ERR_TEFF_EPOCH) K stat.error;phys.temperature.effective double nullable [Fe/H] [-3.7/1.7]? Metallicity (FEH_EPOCH) phys.abund.Z double nullable e_[Fe/H] [0.05/0.6]? Error of [Fe/H] (ERR_FEH_EPOCH) stat.error;phys.abund.Fe double nullable [a/Fe] [-0.4/0.8]? Abundance [alpha/Fe] (AFE_EPOCH) phys.abund double nullable e_[a/Fe] [0.026/0.3]? Error of [alpha/Fe] (ERR_AFE_EPOCH) stat.error;phys.abund double nullable recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int RAJ2000 Right ascension (J2000) (RA) deg pos.eq.ra;meta.main indexed DEJ2000 Declination (J2000) (DEC) deg pos.eq.dec;meta.main indexed JD Julian Day of exposure of the SpecId (JULS_EPOCH) d time.epoch;obs.exposure double indexed SNR [10/2329]? S/N(4650A) per pixel in blue arm of epochs (SNRB_EPOCH) stat.snr double nullable RV [-968/785]? Radial Velocity (RV_EPOCH) km/s phys.veloc;pos.heliocentric float nullable e_RV [3/21]? RV uncertainty (ERR_RV_EPOCH) km/s stat.error float nullable logg [-1.1/6.42]? log of surface gravity (LOGG_EPOCH) log(cm.s**-2) phys.gravity double nullable