M Dwarf catalog of LAMOST DR1 J/other/RAA/15.1 ivo://CDS.VizieR/J/other/RAA/15.1182 doi:10.26093/cds/vizier/dx/bfkbbic CDS Guo Y.-X. Yi Z.-P. Luo A.-L. Wang Y.-F. Bai Y. Yang H.-F. Song Y.-H.,Chen J.-J. Chen X.-Y. Zuo F. Du B. Zhang J.-N. Li Y.-B. Kong X.,Wang M.-X. Wu Y. Wu K.-F. Zhao Y.-H. Zhang Y. Hou Y.-H. Wang Y.-F.,Yang M. 2026-02-10T20:07:03Z 2016-03-08T16:27:46Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr surveys dwarf-stars m-stars peculiar-variable-stars We present a spectroscopic catalog of 93 619 M dwarfs from the first data release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) general survey. During sample selection, M giant contamination was eliminated using 2MASS photometry and CaH/TiO molecular indices. For each spectrum, the spectral subtype and values are provided including radial velocity, H{alpha} equivalent width, a series of prominent molecular band indices, and the metal-sensitive parameter {zeta}, as well as distances and the space motions for high S/N objects. In addition, H{alpha} emission lines are measured to examine the magnetic activity properties of M dwarfs and 7179 active ones are found. In particular, a subsample with significant variation in magnetic activity is revealed through observations from different epochs. Finally, statistical analysis for this sample is performed, including the metallicity classification, the distribution of molecular band indices and their errors. 2015RAA....15.1182G https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/15.1182 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to V/146 : LAMOST DR1 catalogs (Luo+, 2015) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/15.1182 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/15.1182 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/15.1182 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/15.1182 https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/15.1182 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/15.1182 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/other/RAA/15.1182/dr1mcat (Spectroscopic M dwarf catalog from LAMOST DR1) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/15.1182/dr1mcat? https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/15.1182/dr1mcat? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/15.1182/dr1mcat? 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20369 20371 20377-20379 20384 20386-20387 20393 20404 20406 20412 20414 20428-20429 20431 21459 21462 21468-21469 21471 21489 21491 21493-21495 21497 21500-21501 21591 21597 21599 21619 21622-21623 21625 21627-21630 21713 21717 21750 21753 21755 21764 21766 21784 21786 21801-21803 21820-21822 21828 21830-21831 21836-21837 21847 21851 21853-21855 21862-21863 21865 21867 21873-21875 21884-21885 21888-21889 21891 21913 21925 21928 21930-21931 21968-21970 21974 21976 21978-21979 22012-22014 22099-22100 22102-22103 22105 22108 22171 22173-22175 22184 22195-22196 22198-22199 22227 22230-22231 22233-22235 22272-22274 22280-22281 22289 22291 22298-22299 22302 22308-22309 22311 22317 22341-22343 22345 22348 22350-22351 22357 22359-22360 22362 22365 22376 22378-22379 22389 22391 22398 22402 22405 22416-22417 22419 22425 22438 22445-22447 22450-22451 22464 22466-22467 22470 22476 22478 22481-22483 22488-22489 22491 22508-22510 22513 22516-22517 22757-22759 22761 22765-22768 22770-22771 22782 22927 22931 23069 23077-23079 23088-23089 23091-23092 23095-23096 23098-23099 23108-23109 23111-23112 23126 23136 23139 23143 23166 23178 23185-23186 23189 23191 23197 23202-23203 23217-23219 23221-23223 23234-23235 23240-23242 23252 23254 23260 23286 23325-23327 23348-23349 23351 23356-23357 23359 23396 23398 23400-23401 23403-23404 23466 23535 23572 23644 23708 23711 23733 23744-23746 23752-23754 23758-23759 23770-23771 23776 23780-23781 23783 23789 23791-23793 23795-23796 23799 23801-23803 23828-23830 23832 23834 23836-23837 23839 23841 23855 23872-23873 23875 23884 23886 23904-23905 23912 23914-23915 23918-23919 23923 23925-23927 23929-23931 23961 23963 23984 23986 23988 23990 23993 24009 24036 24039 24041-24043 24133 24144-24145 24147 24153 24155 24181 24183 24185 24187 24241 24243 24249 24251 24259 24265 24267 24277-24279 24288 24290 24320 24322-24323 24326-24327 24338 24341-24343 24516-24518 24528 24530 24536 24538-24539 24542 24552-24554 24557 24559 24564 24566-24567 25439 25461 25463 25514 25518-25519 25539 25548 25550-25552 25563 25573 25583-25585 25594-25595 25837-25839 25854 25857 25859 25864-25865 25870 25878-25879 25885 25889 25892-25893 25895 25902-25906 25909 25928 25940 25953-25955 25964 25966-25969 25976 25978-25979 25992-25993 25995 26005-26007 26024-26025 26027 26032 26034-26035 26060-26062 26065-26067 26071-26074 26077 26084 26086-26087 26098 26121-26123 26133-26134 26137 26139 26148-26149 26151-26153 26157 26160 26193-26196 26198 26204-26206 26220-26221 26223 26225-26228 26230 26232-26233 26255 26265-26268 26270-26271 26274-26275 26277-26279 26296-26297 26299 26338 26344 26346-26347 26372-26373 26384-26385 26400 26402-26403 26405 26407 26413-26415 26418 26421 26424 26426 26444-26445 26447 26452 26454-26455 26460-26461 26463 26480-26481 26484-26485 26497 26500-26502 26512 26563 26569 26580 26582 26588-26590 26596-26597 26599 26607 26612 26614-26615 26617-26619 26815 26860 26862 26872 26874-26875 26881 26884-26886 26888 26891 26893 26935 26940-26941 26949 26951 26953-26955 26964-26965 26967 26972 26974-26975 26980 26982-26983 27000-27001 27004-27005 27007 27023 27029 27034-27035 27038 27045 27047 27053 27055 27073 27075 27081 27084 27106 27110-27111 27129-27134 27138-27139 27154 27156-27158 27160 27162 27164-27165 27167 27182-27184 27186-27187 27194-27195 27200-27201 27203 27205-27207 27216 27218-27219 27230 27252 27260 27263 27265-27267 27272-27273 27275 27292 27294 27297 27300-27301 27303 27321-27323 27336-27338 27348 27351 27356 27358-27359 27365 27367-27368 27370 27375 27407 27409 27412 27418 27425 27427 27433 27435 27446 27452 27454-27455 27457 27467 27469-27471 27476-27478 27489 27491 27496 27498-27499 27508-27510 27512-27514 27516 27518 27520 27522 27524-27525 27536-27537 27539 27552 27554 27560 27562-27563 27589-27590 27596 27613-27615 27645 27648-27649 27652 27656 27665 27667 27674-27677 27682-27683 27688 27690 27692-27693 27695 27712 27714-27716 27718 27724 27726-27727 27752-27753 27755 27762-27763 27778 27792-27793 27796-27797 27803 27825 27827 27832 27834-27835 27841 27843 27860 27862 27868 27876-27878 27884 27896-27897 27901-27902 27927 27956 27958-27959 27964-27965 27967 27970-27971 28004-28005 28007 28012-28014 28016-28018 28020-28021 28025 28027 28039 28045 28047 28050-28051 28054 28069 28071 28089 28091 28098 28105 28108 28111-28112 28114-28115 28118-28119 28144-28145 28147 28156-28158 28169-28171 28200-28201 28203 28208 28210-28213 28224 28226-28227 28230 28236 28240-28241 28244-28245 28247 28256-28257 28289 28292-28293 28304-28305 28324 28326-28329 28332-28334 28377-28380 28382-28383 28393-28395 28421-28423 28425 28427 28461-28463 28536-28538 28554-28555 28572-28574 28596 28598 28600-28602 28604 28606 28628-28630 28636-28637 28639 28660-28661 28663 30906 30975 31147 31251 31253-31254 31257 31260-31261 31263 31281 31283 31289 31291 31296 31298 31305-31307 31310 31317-31319 31322 31324-31325 31334 31340 31342-31343 31352 31355 31357-31359 31366-31367 31369-31371 31380-31381 31384 31386 31390 31404-31405 31408-31410 31428 31430-31431 31436-31437 31439-31441 31448 31451 31453 31456-31457 31459 31468-31469 31480 31492 31495 31513 31515-31516 31518-31520 31528-31529 31531 31539-31541 31543 31545 31549-31550 31592 31611-31612 31614-31615 31620 31622 31628 31697 31699 31707 31709-31711 31717 31719 31736-31737 31739 31778 31780 31786-31787 31789 31791 31801-31802 31872-31873 31877-31879 32270-32271 32289 32316 32318 32383 32393-32394 32396 32400-32401 32403-32404 32407 32409 32413 32415-32416 32418 32424 32426 32433 32436-32437 32450 32456 32467 32473 32475 32485 32487 32500-32502 32508 32510 32546-32547 32550-32551 32568 32570-32571 32652 32654 32656 32667 32672 32689-32691 32696-32697 32699 32726 32744 32749 32756-32758 32760 36718 36783 36801-36804 36806 36812-36813 36815 36818 36824 36826 36832-36833 36836 36839 36843 36849-36852 36854-36855 40859 40881-40883 40885-40887 40889 40891 40893-40895 40928 40930-40931 40934 40937-40939 40942-40943 44979 44982 44986-44987 45019 45023 45041 45043 45048 45050-45051 48983 48998-48999 49008 49010-49011 49013-49014 49116-49117 49119 49141 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/15.1182?format=ascii default J/other/RAA/15.1182/dr1mcat Spectroscopic M dwarf catalog from LAMOST DR1 ObsID Obs ID meta.id long recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Obs.Date Observation date time.epoch;obs nullable LMJD Local Modified Julian Day d time.epoch;pos.lg;pos.lsr int PlanId Plan Name obs.field char spId Spectrograph ID meta.id;instr int FiberID Fiber ID meta.id;instr int RAJ2000 Right Ascension (J2000) deg pos.eq.ra;meta.main indexed DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main indexed snru ? Signal Noise Ratio of u filter stat.snr float nullable snrg ? Signal Noise Ratio of g filter stat.snr double nullable snrr ? Signal Noise Ratio of r filter stat.snr double nullable snri ? Signal Noise Ratio of i filter stat.snr double nullable snrz ? Signal Noise Ratio of z filter stat.snr double nullable objType Object Type src.class char FiberType Fiber Type of target (Obj, Sky, F-std, Unused, PosErr, Dead) meta.code char Name Designation (JHHMMSS.ss+DDMMSS.s) meta.id;meta.main char magType Target Magnitude Type phot.mag char mag1 ? Associated Magnitude 1 mag phot.mag float nullable mag2 ? Associated Magnitude 2 mag phot.mag float nullable mag3 ? Associated Magnitude 3 mag phot.mag float nullable mag4 ? Associated Magnitude 4 mag phot.mag float nullable mag5 ? Associated Magnitude 5 mag phot.mag float nullable mag6 ? Associated Magnitude 6 mag phot.mag float nullable mag7 ? Associated Magnitude 7 mag phot.mag float nullable tsource Organization or person who submits input catalog obs.observer char tfrom Input catalog submitted by an organization or a person determined by the tsource obs.observer char tInfo Target ID from SDSS, UCAC4, PANSTAR and other catalogue meta.bib char RV ? Heliocentric Radial Velocity km/s spect.dopplerVeloc;pos.heliocentric double nullable e_RV ? Uncertainty of Heliocentric Radial Velocity km/s stat.error double nullable EWHa H{alpha} equivalent width 0.1nm spect.line.eqWidth;em.line.Halpha double e_EWHa ? rms uncertainty on EWHA 0.1nm stat.error double nullable S/N ? Halpha signal-to-noise ratio (sn) stat.snr double nullable S/N1 ? Second signal-to-noise ratio (sn1) stat.snr double nullable Zeta ? Metal-sensitive parameter spect.index double nullable e_Zeta ? rms uncertainty on Zeta stat.error double nullable MA [0/1]? Magnetic activity, 1 for yes meta.code double nullable CaH1 ? CaH1 index meta.code;spect.index double nullable CaH2 ? CaH2 index meta.code;spect.index double nullable CaH3 ? CaH3 index meta.code;spect.index double nullable TiO1 ? TiO1 index meta.code;spect.index double nullable TiO2 ? TiO2 index meta.code;spect.index double nullable TiO3 ? TiO3 index meta.code;spect.index double nullable TiO4 ? TiO4 index meta.code;spect.index double nullable TiO5 ? TiO5 index meta.code;spect.index double nullable e_CaH1 ? rms uncertainty on CaH1 stat.error double nullable e_CaH2 ? rms uncertainty on CaH2 stat.error double nullable e_CaH3 ? rms uncertainty on CaH3 stat.error double nullable e_TiO1 ? rms uncertainty on TiO1 stat.error double nullable e_TiO2 ? rms uncertainty on TiO2 stat.error double nullable e_TiO3 ? rms uncertainty on TiO3 stat.error double nullable e_TiO4 ? rms uncertainty on TiO4 stat.error double nullable e_TiO5 ? rms uncertainty on TiO5 stat.error double nullable Uvel ? U velocity km/s phys.veloc;pos.cartesian.x double nullable Vvel ? V velocity km/s phys.veloc;pos.cartesian.y double nullable Wvel ? W velocity km/s phys.veloc;pos.cartesian.z double nullable Dist ? Distance pc pos.distance double nullable