Hot stars from LAMOST DR6 J/A+A/662/A66 ivo://CDS.VizieR/J/A+A/662/A66 doi:10.26093/cds/vizier.36620066 CDS Xiang M. Rix H.-W. Ting Y.-S. Kudritzki R.-P. Conroy C. Zari E.,Shi J.-R. Przybilla N. Ramirez-Tannus M. Tkachenko A. Gebruers S.,Liu X.-W. 2022-08-26T06:25:36Z 2022-06-17T14:33:42Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr early-type-stars effective-temperature chemical-abundances photometry visible-astronomy infrared-photometry We set out to determine stellar labels from low-resolution survey spectra of hot stars, specifically OBA stars with Teff>~7500K. This fills a gap in the scientific analysis of large spectroscopic stellar surveys such as LAMOST, which offers spectra for millions of stars at R~1800 and covering 3800{AA}-9000{AA}. We first explore the theoretical information content of such spectra for determining stellar labels, via the Cramer-Rao bound. We show that in the limit of perfect model spectra and observed spectra with S/N~50-100, precise estimates are possible for a wide range of stellar labels: not only the effective temperature Teff, surface gravity logg, and projected rotation velocity vsini, but also the micro-turbulence velocity vmic , Helium abundance NHe=Ntot and the elemental abundances [C/H], [N/H], [O/H], [Si/H], [S/H], and [Fe/H]. Our analysis illustrates that the temperature regime of Teff~9500K is challenging, as the dominant Balmer and Paschen line strength vary little with Te . We implement the simultaneous fitting of these 11 stellar labels to LAMOST hot-star spectra using the PAYNE approach, drawing on Kurucz's ATLAS12/SYNTHE LTE spectra as the underlying models. We then obtain stellar parameter estimates for a sample of about 330000 hot stars with LAMOST spectra, an increase by about two orders of magnitude in sample size. Among them, about 260000 have S/N>5 Gaia parallaxes, and their luminosities imply that >~95% among them are luminous star, mostly on the main sequence; the rest reflects lower luminosity evolved stars, such as hot subdwarfs and white dwarfs. We show that the fidelity of the results, particularly for the abundance estimates, is limited by the systematics of the underlying models, as they do not account for NLTE effects. Finally, we show the detailed distribution of v sin i of stars with 8000-15000K, illustrating that it extends to a sharp cut-off at the critical rotation velocity, vcrit, across a wide range of temperatures. 2022A&A...662A..66X https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/662/A66 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/350 : Gaia EDR3 (Gaia Collaboration, 2020) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) II/328 : AllWISE Data Release (Cutri+ 2013) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/662/A66 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/662/A66 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/662/A66 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/662/A66 https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/662/A66 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/662/A66 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/A+A/662/A66/table5 (Stellar label catalog for hot stars in LAMOST DR6) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/662/A66/table5? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/662/A66/table5? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/662/A66/table5? 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10832 10834-10835 10841-10842 10848-10849 10855-10858 10864 10866 10868 10872 10875-10876 10878-10879 10885-10890 10893-10898 10904-10906 10913 10915 10921-10922 10928-10929 10931-10932 10939-10940 10942-10943 10945-10946 10948-10950 10952-10954 10956 10958-10959 10964 10966 10972 10974-10975 10978 10980 10982-10986 10993-10996 10998-11002 11005-11007 11009 11012-11013 11015 11018 11020-11021 11024 11026-11027 11032-11034 11036-11038 11045 11047 11053 11056 11058 11060-11061 11063 11072 11077 11079 11088-11089 11091 11093-11095 11100 11102-11106 11113-11115 11118-11120 11122-11123 11128 11130 11132 11134-11135 11140 11143 11149 11157-11159 11163-11164 11166-11167 11170-11171 11173-11177 11181-11183 11193-11196 11198 11204 11206-11208 11210 11212-11213 11219-11220 11223 11227-11230 11232 11234 11264 11267 11271 11284-11285 11287-11288 11290-11291 11295 11297 11304 11306-11307 11311 11314-11317 11319-11320 11327 11329-11330 11332-11333 11335-11336 11339 11341-11344 11346-11348 11350 11352-11353 11355 11369-11372 11381 11383 11395 11401-11402 11405-11407 11411-11412 11415-11416 11418-11419 11422-11423 11428 11430 11432-11434 11437-11439 11445-11446 11448 11451 11456-11457 11459 11461-11463 11466 11469-11471 11522-11523 11525 11528-11529 11538 11552 11781-11783 11788-11789 11791-11792 11794 11800-11801 11804 11806 11808 11810-11813 11817-11818 11820 11824-11826 11907-11908 11911 11913 11995 11997-11999 12017-12018 12022-12025 12028-12029 12170-12171 12192 12194 12196 12296-12297 12304 12307 12312 12314 12361 12389 12409 12411 12460 12493 12495 12497-12499 12517 12537 12540 12548-12550 12558-12559 12568-12569 12573-12575 12577-12579 12592 12594-12595 12600-12602 12604-12605 12607 12616 12621 12632 12634 12638 12642 12645 12650-12651 12658 12664 12666-12670 12693-12695 12700-12702 12705-12707 12717 12724 12726-12727 12733-12736 12738 12741 12743-12745 12747-12748 12750 12753-12754 12756-12758 12760 12762-12763 12765 12769-12770 12772-12773 12775-12776 12778-12781 12783 12785 12787 12789-12791 12834-12836 12838-12839 12932-12933 12936 12949-12951 12980-12981 12983 12992 12994-12995 12998 13042-13043 13072-13073 13075 13084-13085 13113-13115 13120-13122 13127 13131 13153 13155 13160 13162-13165 13176-13177 13183 13191 13239 13256 13259 13269-13271 13274-13275 13277 13279 13301 13303 13313 13315-13317 13319 13359 13364 13366-13367 13369-13371 13378 13384 13387 13409-13414 13440-13442 13444 13450-13451 13455 13457-13459 13484 13486 13489-13490 13493 13500-13501 13503 13548-13549 13556-13557 13560-13561 13568 13571 13588-13590 13600-13601 13603 13624-13625 13627 13676 13678-13679 13688 13690-13691 13728-13729 13731 13739 13742-13743 13745 13747 13764-13766 13808-13810 13830 13847 13853-13855 13889-13892 13894-13895 13924-13926 13928 13930 14013 14033 14035 14076 14081 14092-14093 14095 14117 14128-14129 14131 14137 14139 14148-14150 14159 14165 14167 14170-14171 14204-14205 14208 14210 14216 14218 14221 14223 14240 14245 14247 14264-14265 14269 14284-14286 14288 14290 14308 14312 14366-14367 14370-14371 14375 14385-14387 14400-14401 14403 14408 14410-14411 14414 14436 14438 14444 14446 14448-14449 14451 14463 14472-14473 14475-14478 14488 14490-14491 14497-14499 14524 14526-14528 14530 14536 14538 14546-14547 14549-14551 14556 14558-14559 14561 14563 14569-14570 14617 14619 14641-14643 14648 14650 14652-14653 14660-14662 14673-14674 14696-14697 14699 14716 14719 14736 14738-14739 14743 14800 14802-14803 14844-14846 14848 14850-14851 14853-14855 14880-14881 14883 14888-14889 14912 14914-14915 14976 14978-14980 14982-14984 14986 15008-15009 15012 15048 15050-15052 15054-15055 15068 15071-15073 15075 15080-15082 15084-15086 15101-15103 15160-15162 15164 15172-15174 15180 15182 15184-15185 15189-15191 15193 15195 15200-15202 15220-15221 15232 15247 15257-15259 15262-15263 15270 15276-15277 15279 15281-15282 15292-15293 15298-15302 15304 15306 15309-15311 15320 15372 15374 15392-15393 15404 15406-15407 15424-15425 15427 15433 15435 15444 15446 15452 15454 15457 15459 15472-15474 15476 15500 15520 15522 15904-15905 17601 17608-17610 17632 17635-17637 17639 17645 17647 17649 17651-17652 17654-17655 17667-17668 17678-17680 17682 17716-17718 17724-17725 17727-17728 17731-17733 17738-17741 17744-17745 17747 17752-17753 17755 17761-17762 17765-17768 17771 17776 17778 17813-17814 17817 17819-17820 17822-17823 17829 17832 17837 17845-17849 17851-17852 17854-17855 17870-17873 17875 17880-17881 17883-17886 17888-17890 17892 17894 17906 17916 17918-17919 17989 18001 18003-18006 18011 18019-18021 18026 18032 18034 18036-18037 18039-18042 18045 18085-18086 18091 18094 18098-18099 18102-18103 18105 18107 18110 18114-18115 18121 18123-18125 18128-18129 18131 18136-18137 18139 18142-18143 18145-18146 18148-18149 18151-18154 18156 18160-18161 18165 18168 18178 18182 18185-18187 18190-18191 18193 18195 18197 18201-18202 18205 18207-18208 18210-18211 18213-18216 18219-18220 18222 18224 18226-18227 18229 18238-18239 18241 18247-18250 18256 18258-18261 18264-18266 18269-18271 18274 18279-18280 18282 18284-18285 18288-18290 18298-18301 18312 18315 18321-18324 18328 18330 18335 18339-18341 18343 18349 18356 18360-18361 18372 18374-18375 18377 18381-18386 18392-18393 18395 18398 18401 18403 18407 18413-18415 18418-18422 18428 18430-18431 18644-18646 18648 18653-18654 18662-18663 18672-18673 18675 18680-18681 18683 18685-18687 18767 18775 18778 18794 18796-18797 18799-18802 18808 18811 18824 18826-18827 18830 18834-18835 18840-18841 18843 18861-18863 18865-18867 18876-18877 18879 18881-18886 18896 18898-18901 18903 18906-18907 18912 18914 18917-18919 18921-18923 18928-18929 18933 18935 18937 18939 18945-18946 18952-18954 18975-18976 18979 18986-18987 18990 18994 18997-19001 19006 19012-19014 19020-19022 19044-19045 19047 19049-19054 19057-19062 19064-19066 19072 19074 19076 19078-19079 19090-19091 19093 19096 19098-19099 19104-19105 19108-19109 19113-19115 19120-19121 19123 19130 19132-19133 19135 19140-19141 19143 19156-19157 19159 19164-19165 19176 19178-19182 19192 19194-19195 19232 19237 19239-19241 19243 19260 19262 19264 19266-19267 19277-19279 19281-19282 19286-19288 19290 19296-19297 19299-19300 19320-19321 19323 19336-19337 19339-19341 19343 19345-19346 19348 19350 19358-19359 19378 19380 19382 19400-19402 19424-19425 19427 19436-19438 19456-19457 19459 19464-19465 19467 19479-19480 19482-19483 19492 19494 19496 19501-19506 19520 19524-19525 19528 19530-19532 19535 19540-19541 19544 19552-19554 19563 19566 19576 19579-19580 19582-19583 19592-19593 19595 19597-19599 19602 19604-19605 19607-19610 19612-19613 19615 19624-19626 19628-19629 19632 19635 19637-19638 19640 19653-19655 19658 19662-19663 19669-19670 19674 19676 19679 19681 19684 19690 19694 19697-19699 19704-19705 19707 19727-19728 19731-19732 19736 19738-19739 19749 19751 19760 19762 19764-19766 19768 19773 19777-19779 19786 19790-19792 19796 19800-19802 19805-19806 19811 19813-19814 19818-19819 19833-19835 19855 19860 19866-19867 19872 19874-19876 19878 19881-19884 19886-19889 19891 19894-19895 19900-19901 19903-19905 19907-19909 19911 19913-19915 19921-19923 19927 19929-19930 19936 19938-19939 19941 19943-19945 19947 19970-19971 19984 19986 19990-19991 20004 20016 20018-20019 20021-20023 20037-20038 20045-20046 20053-20054 20059 20068 20071 20080 20082 20092 20102 20113 20115 20121 20132-20134 20145-20147 20168-20169 20171 20180 20182 20188 20190-20191 20196-20197 20201 20205-20207 20214 20224-20226 20233 20244-20245 20247 20252 20260-20261 20263 20266-20267 20269 20271 20273-20275 20280-20281 20283-20284 20286-20290 20296-20298 20309-20312 20314 20348-20349 20351 20360-20362 20364-20365 20367 20376 20378-20379 20392-20394 20400 20402 20433-20435 21355 21373-21375 21423 21431-21432 21434-21435 21437-21439 21441 21443 21449 21589 21591 21597 21599 21619 21686-21687 21710-21711 21713 21715 21722-21723 21725-21727 21730-21731 21764 21766-21767 21845-21847 21884-21885 21887 22045 22051 22344-22345 22347 22684-22685 22687 22709 22711 22727 22738-22740 22742-22743 22748 22750-22751 22754-22755 22760 22763-22765 22767 22769-22771 22797-22799 22819 22825 22827 22830-22831 22840 22842-22846 22940 22942-22943 22977 22987 22989-22991 23000-23001 23003 23008 23010-23012 23014-23018 23024-23026 23071 23077 23082 23085 23088-23090 23094-23095 23105-23107 23116 23118 23129-23131 23134-23138 23140 23142-23144 23146 23152-23153 23155 23164-23165 23167 23172-23173 23175 23178 23180 23182-23183 23185-23187 23195-23198 23201-23203 23212 23214-23216 23218-23219 23228 23230-23231 23237-23242 23256 23258-23261 23263-23265 23267 23272-23273 23275-23276 23278-23279 23284-23286 23288-23289 23291 23296 23298-23299 23309-23311 23313 23315 23317-23318 23329-23331 23361-23364 23366 23372-23373 23375-23377 23379 23424-23426 23428-23430 23436 23438-23440 23442-23443 23480 23482-23483 23485-23487 25423 25435 25438-25439 25445 25447 25453 25461-25463 25465 25467-25468 25470-25471 25518 25531 25533-25535 25555 25564 25566 25570-25573 25575 25585-25586 25590-25594 25596-25598 25711 25718 25723-25724 25759 25767 25773 25778-25782 25785 25788 25794 25805-25806 25808 25810 25812-25813 25815 25817 25828 25830-25831 25845-25847 25857 25859 25861-25862 25867-25870 25874-25877 25879-25880 25882-25883 25898 25901 25903 25908-25910 25928-25929 25932-25933 25935 25941-25943 25952 25955 25960 25962-25965 25967 25976 25979 25996-25998 26008-26010 26024-26025 26027 26032 26034-26038 26041-26044 26046-26047 26062-26066 26069-26073 26076 26078-26081 26083-26084 26086 26088 26090-26094 26096 26098 26100-26102 26108 26119 26127-26129 26131 26140-26141 26148-26149 26151 26156-26157 26159 26172-26174 26196-26197 26199 26205-26209 26211 26216-26217 26219 26224 26226-26227 26233-26236 26238-26241 26243-26246 26250-26251 26257-26259 26262 26265-26268 26270-26271 26274-26275 26278-26279 26284-26285 26287 26289-26291 26296-26298 26305 26307 26324-26325 26327 26332 26336-26337 26339-26340 26342 26344 26346-26347 26350 26352 26354 26357-26358 26360 26363 26365-26368 26372-26374 26384 26389-26391 26394 26396-26397 26399 26420 26423 26428 26430-26432 26435 26452-26454 26456-26458 26460-26462 26476-26477 26481-26482 26492-26493 26495-26498 26504-26505 26508-26509 26511-26512 26514-26518 26520 26522-26523 26530-26534 26536-26538 26540-26541 26543 26549-26551 26560 26565-26567 26569-26571 26592-26593 26595 26597-26599 26602-26603 26608-26609 26611 26711 26718 26733 26736 26739 26744-26746 26815 26823 26829-26831 26835 26839-26841 26843 26853 26855 26858-26859 26861-26862 26865-26866 26868-26869 26871-26872 26874-26876 26879-26880 26884 26888 26892-26893 26895 26904 26906-26907 26909-26911 26913 26915 26920-26922 26932 26936-26937 26939-26940 26944 26946 26948-26949 26951 26956-26958 26960 26964-26966 26969-26971 26973-26975 26980 26982-26986 26998-27001 27003-27006 27009 27011-27013 27015 27017-27018 27020 27022 27025-27028 27032 27034-27035 27038-27041 27043 27045 27047 27049 27051-27053 27060-27062 27065-27070 27074-27075 27081-27082 27085 27087 27106-27107 27110-27111 27116 27119 27125-27127 27138 27140 27143 27148 27150 27156-27158 27160 27162-27164 27167 27169 27171 27184-27185 27187 27189-27193 27195 27204 27206-27207 27218-27220 27223 27228-27229 27231 27252-27253 27255 27265-27267 27293-27295 27316-27317 27319 27333-27335 27341-27345 27357-27362 27374 27386-27390 27397-27399 27408-27410 27414-27417 27419 27428 27431-27432 27434-27436 27438-27439 27444 27446-27447 27449-27451 27458 27461-27462 27464 27466 27468 27470 27473-27475 27477-27480 27482-27483 27493-27496 27498-27499 27501-27503 27508 27510-27513 27515-27516 27519 27524-27526 27528 27530-27533 27535 27546-27547 27556-27557 27568-27569 27571-27574 27580 27582-27583 27585-27587 27592 27596-27597 27606 27612 27614 27616 27618-27619 27621 27623 27628-27629 27631-27633 27639-27641 27645 27649-27651 27665 27667 27672 27674-27677 27679 27688 27690-27691 27693 27695-27696 27702 27710-27711 27718 27721-27723 27744-27745 27747 27752-27753 27757 27759 27764-27765 27767-27768 27770-27771 27773-27775 27784 27786 27788 27790 27792-27793 27796-27798 27804-27805 27810-27811 27814-27815 27821 27823 27825 27828-27830 27834 27838-27839 27841-27842 27848 27851 27853 27855-27858 27864 27866 27878-27882 27884 27886-27887 27892 27895-27896 27898-27900 27909-27913 27915 27920 27922-27923 27925-27926 27929-27931 27940-27941 27943-27946 27956-27958 27964 27966 27968-27970 27972-27973 27975 27981-27983 27996-27998 28000-28001 28003 28005-28009 28011-28012 28015-28016 28018-28021 28028 28030-28033 28035-28037 28040 28042-28043 28045-28047 28050-28051 28054-28058 28060-28061 28063 28068 28070 28072-28074 28076-28077 28079 28082-28083 28086 28088-28090 28092-28093 28099-28100 28102-28103 28108-28110 28112-28114 28117-28119 28129 28134-28135 28142 28145 28149-28151 28154-28155 28159 28165-28167 28172 28174 28177-28179 28185 28201 28203-28205 28208 28210-28213 28215-28217 28219 28221-28222 28238-28239 28241 28244-28246 28248-28250 28254-28255 28258-28259 28261-28263 28268-28269 28271 28273-28276 28278 28281-28285 28288 28293-28294 28308 28310 28312 28314-28318 28323 28325-28329 28331 28338 28341-28345 28347-28348 28350-28351 28354-28355 28360 28364-28365 28372-28373 28380 28382-28383 28389-28394 28400-28401 28403 28417 28428-28429 28431 28440 28442-28443 28448 28450 28452-28453 28455 28459 28465-28466 28468-28470 28473-28477 28479 28484-28485 28487 28500-28501 28503-28505 28507-28510 28512-28514 28528 28530-28533 28535 28547-28548 28550-28551 28553-28555 28560 28562-28566 28568-28569 28571 28573 28575 28600 28602 28604 28606-28607 28620 28622-28623 28628 28630-28634 28636 28638 28640 28643 28646-28647 28651 28653-28654 28656-28657 28659 28661 28663 28665-28667 29567 29650-29651 29653-29655 29669 29674-29675 29678-29679 29689-29690 29925 29927 29940 29942-29943 30122 30171 30200-30201 30203 30250-30251 30277 30301 30303 30314-30315 30318 30325 30357 30359 30365 30367 30372 30374-30375 30418 30426-30427 30430 30452-30453 30455 30468 30470-30471 30488 30490 30505 30508 30512 30549 30573 30575 30578-30579 30581-30583 30661 30681 30684-30685 30895 30898 30904 30907 30910-30911 30919 30928 30930-30933 30935 30949 30951 30954-30955 30958-30959 30968-30970 30972 30999 31001 31003 31016 31018-31019 31021-31025 31027 31033-31035 31112-31114 31116-31117 31119 31138-31139 31148 31150-31151 31154-31157 31160-31162 31180 31182-31185 31188-31189 31191 31193-31197 31199 31212-31213 31221-31223 31228-31229 31231 31237 31239 31249-31251 31257 31281 31289 31291 31325 31327 31333-31335 31363 31366-31367 31378-31379 31384 31396-31397 31399 31404-31405 31407-31410 31436-31437 31439 31452-31453 31455 31480-31481 31483 31488-31490 31492 31494-31495 31504-31505 31507 31517-31519 31521 31526-31527 31532 31534 31552 31555 31557 31561-31563 31566 31568 31570 31572-31573 31575 31586-31587 31596 31598-31599 31601 31604 31606-31607 31610-31611 31637-31639 31656-31658 31660-31661 31663 31670-31671 31689 31691-31693 31695 31697 31699 31714-31717 31720-31722 31725 31796-31798 31804-31806 31824-31826 31832-31834 31848-31849 31851 31880 31882-31883 31900-31901 31903 31925-31927 31969-31970 31972-31973 31975 32022-32023 32029-32030 32032 32034-32035 32038 32044 32046 32055 32064 32073-32074 32076 32078 32098-32100 32108 32110 32119 32125-32127 32132 32134-32135 32145 32156-32157 32182-32183 32198 32200-32201 32204 32206-32207 32210-32211 32217-32219 32227 32229-32232 32234-32235 32240-32241 32243 32249-32251 32264-32265 32267-32270 32285-32286 32308-32310 32316-32318 32320-32321 32323 32328 32330-32331 32360 32362-32366 32376-32378 32380-32381 32383 32392-32393 32396 32416 32418-32419 32427 32431-32434 32440-32442 32449-32450 32460-32461 32463 32468 32470 32480-32482 32485-32487 32489-32494 32500 32502 32505 32507 32540 32561-32562 32564 32566-32567 32581 32583-32584 32589-32590 32610-32611 32613-32616 32618-32621 32623 32629 32631-32633 32637-32642 32648-32649 32651-32654 32661 32663 32673-32674 32676-32677 32679-32680 32682-32683 32697 32700 32702 32704 32706-32707 32711-32712 32714-32715 32718-32719 32721-32724 32726 32729-32732 32734-32736 32738-32739 32741 32743-32746 32757-32759 32761-32765 32767 36711 36715 36717 36719 36729-36732 36734 36794 36804 36807-36808 36810-36811 36814-36818 36820-36822 36824 36828 36830-36832 36837 36839 36846-36847 36850-36851 36857-36859 40859 40862-40863 40871 40877 40885-40887 40902 40913-40915 40924-40926 40956 40958-40959 44983 44985-44986 44988 45017 45019-45022 45026 45032 45034-45035 45040-45041 45043 45049 45051 48988-48989 48991 48998-48999 49006-49007 49010-49011 49014 49020 49022-49023 49092-49093 49095 49104-49106 49117 49119 8.157980699529898e-21 3.916500758235022e-19 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/662/A66?format=ascii Optical Infrared default J/A+A/662/A66/table5 Stellar label catalog for hot stars in LAMOST DR6 chisqred Chi square of the fit divided by dof stat.fit.chi2 double recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SpecID LAMOST spectra ID, date-planid-spid-fiberid meta.id;meta.main char RAJ2000 Right ascension from the LAMOST DR6 catalog (J2000) deg pos.eq.ra;meta.main indexed DEJ2000 Declination from the LAMOST DR6 catalog (J2000) deg pos.eq.dec;meta.main indexed snrg Pixel spectral signal-to-noise ratio in SDSS g-band stat.snr float Teff Effective temperature K phys.temperature.effective float e_Teff Uncertainty in Teff K stat.error;phys.temperature.effective double logg Surface gravity log(cm.s**-2) phys.gravity double e_logg Uncertainty in logg log(cm.s**-2) stat.error double [Fe/H] Iron abundance phys.abund.Fe double e_[Fe/H] Uncertainty in [Fe/H] stat.error;phys.abund.Fe double vsini ? Projected rotation velocity km/s phys.veloc.rotat double nullable e_vsini Uncertainty in vsini km/s stat.error;phys.veloc.rotat double [Si/H] Silicon abundance phys.abund double e_[Si/H] Uncertainty in [Si/H] stat.error;phys.abund double corTeff-logg ? Correlation coefficient between teff and logg, derived from the covariance array of the fit stat.correlation double nullable corTeff-[Fe/H] ? Correlation coefficient between Teff and [Fe/H] stat.correlation double nullable corlogg-[Fe/H] ? Correlation coefficient between logg and [Fe/H] stat.correlation double nullable corTeff-vsini ? Correlation coefficient between Teff and vsini stat.correlation double nullable corlogg-vsini ? Correlation coefficient between logg and vsini stat.correlation double nullable corvsini-[Fe/H] ? Correlation coefficient between vsini and [Fe/H] stat.correlation double nullable corTeff-[Si/H] ? Correlation coefficient between Teff and [Si/H] stat.correlation double nullable corlogg-[Si/H] ? Correlation coefficient between logg and [Si/H] stat.correlation double nullable cor[Si/H]-[Fe/H] ? Correlation coefficient between [Si/H] and [Fe/H] stat.correlation double nullable corvsini-[Si/H] ? Correlation coefficient between vsini and [Si/H] stat.correlation double nullable RV ? Line-of-sight velocity from LAMOST 1D pipeline km/s phys.veloc;pos.heliocentric double nullable e_RV [] Uncertainty in RV km/s stat.error double chi2ratio Deviation of the chisqred from the median value stat.fit.chi2 double uniqflag [1/32] Flag to indicate repeat visits; 1 means the first (unique) visit, n(>1) means the n-th repeat visit meta.code int sourceDR6oba [0/1] Is this target from the LAMOST DR6 classification? (1='YES', 0='NO') meta.code int sourceZari21 [0/1] Is this target from the photometric identification with Zari et al. (2021, in prep.)'s method? (1='YES', 0='NO') meta.code int sourceLiu19 [0/1] Is this target from the OB star catalog of Liu et al. (2019ApJ...881....7L)? (1='YES', 0='NO') meta.code int GaiaEDR3 ? Source ID of Gaia eDR3 meta.id nullable Plx ? Gaia eDR3 parallax mas pos.parallax double nullable Q-WISE WISE photometric quality flag meta.code.qual;phot char e_Plx ? Uncertainty in parallax mas stat.error;pos.parallax double nullable pmRA ? Gaia eDR3 proper motion in RA direction mas/yr pos.pm;pos.eq.ra double nullable e_pmRA ? Uncertainty in pmRA mas/yr stat.error;pos.pm;pos.eq.ra double nullable pmDE ? Gaia eDR3 proper motion in Dec direction mas/yr pos.pm;pos.eq.dec double nullable e_pmDE ? Uncertainty in pmDE mas/yr stat.error;pos.pm;pos.eq.dec double nullable RUWE ? Gaia eDR3 RUWE stat.error double nullable rgeo ? Geometric distance based on Gaia parallax from Bailer-Jones et al. (2021, Cat. I/352) pc pos.distance double nullable e_rgeo ? Distance at 16th percentile of the PDF area pc stat.error double nullable E_rgeo ? Distance at 84th percentile of the PDF area pc stat.error;stat.max double nullable Fidelity ? Fidelity value from Rybizki et al. (2021, in prep.), an identifier for spurious astrometric solutions meta.code double nullable E(B-V)bayes19 ? E(B-V) interpolated from the 3D map of Green et al. (2019ApJ...887...93G) using rgeo mag phot.color.excess double nullable E(B-V)pair ? E(B-V) estimated using intrinsic color from synthetic spectra of HotPayne stellar parameters mag phot.color.excess double nullable e_E(B-V)pair ? Uncertainty in E(B-V)pair mag stat.error double nullable Gmag ? Gaia eDR3 magnitude in G band mag phot.mag;em.opt double nullable e_Gmag ? Uncertainty in Gmag mag stat.error;phot.mag double nullable BPmag ? Gaia eDR3 magnitude in BP band mag phot.mag;em.opt.B double nullable e_BPmag ? Uncertainty in BPmag mag stat.error;phot.mag double nullable RPmag ? Gaia eDR3 magnitude in RP band mag phot.mag;em.opt.R double nullable e_RPmag ? Uncertainty in RPmag mag stat.error;phot.mag double nullable Jmag ? 2MASS magnitude in J band mag phot.mag;em.IR.J double nullable e_Jmag ? Uncertainty in Jmag mag stat.error;phot.mag double nullable Hmag ? 2MASS magnitude in H band mag phot.mag;em.IR.H double nullable e_Hmag ? Uncertainty in Hmag mag stat.error;phot.mag double nullable Kmag ? 2MASS magnitude in K band mag phot.mag;em.IR.K double nullable e_Kmag ? Uncertainty in Kmag mag stat.error;phot.mag double nullable Q-2MASS 2MASS photometric quality flag meta.code.qual;phot char W1mag ? WISE magnitude in W1 band mag phot.mag;em.IR.3-4um double nullable e_W1mag ? Uncertainty in W1mag mag stat.error;phot.mag double nullable W2mag ? WISE magnitude in W2 band mag phot.mag;em.IR.4-8um double nullable e_W2mag ? Uncertainty in W2mag mag stat.error;phot.mag double nullable W3mag ? WISE magnitude in W3 band mag phot.flux.density;em.IR.8-15um double nullable e_W3mag ? Uncertainty in W3mag mag stat.error;phot.mag double nullable W4mag ? WISE magnitude in W4 band mag phot.flux.density;em.IR.15-30um double nullable e_W4mag ? Uncertainty in W4mag mag stat.error;phot.mag double nullable StarID Star ID, defined in format of SDDDMMSS+DDMMSS for stars of similar S/N and Teff, divided by the dispersion meta.id char VAR-WISE WISE variability flag meta.code;src.var char