J/other/RAA/21.2ivo://CDS.VizieR/J/other/RAA/21.288doi:10.26093/cds/vizier/dx/cbkciiCDSShridharan B.Mathew B.Nidhi S.Anusha R.Arun R.Kartha S.S.,Bharat Kumar Y.2026-02-10T20:07:55Z2024-08-23T09:50:43ZCDS support team

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

cds-question@unistra.frearly-type-starsemission-line-starsmorgan-keenan-classificationinfrared-photometryvisible-astronomyWe present a catalog of 3339 hot emission-line stars (ELSs) identified from 451 695 O, B and A type spectra, provided by LAMOST Data Release 5 (DR5). We developed an automated Python routine that identified 5437 spectra having a peak between 6561 and 6568{AA}. False detections and bad spectra were removed, leaving 4138 good emission-line spectra of 3339 unique ELSs. We re-estimated the spectral types of 3307 spectra as the LAMOST Stellar Parameter Pipeline (LASP) did not provide accurate spectral types for these emission-line spectra. As Herbig Ae/Be stars exhibit higher excess in near-infrared and mid-infrared wavelengths than classical Ae/Be stars, we relied on 2MASS and WISE photometry to distinguish them. Finally, we report 1089 classical Be, 233 classical Ae and 56 Herbig Ae/Be stars identified from LAMOST DR5. In addition, 928 B[em]/A[em] stars and 240 CAe/CBe potential candidates are identified. From our sample of 3339 hot ELSs, 2716 ELSs identified in this work do not have any record in the SIMBAD database and they can be considered as new detections. Identification of such a large homogeneous set of emission-line spectra will help the community study the emission phenomenon in detail without worrying about the inherent biases when compiling from various sources.2021RAA....21..288Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/21.288CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/156 : LAMOST DR7 catalogs (Luo+, 2019)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)II/328 : AllWISE Data Release (Cutri+ 2013)II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/21.288https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/21.288http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/21.288https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/21.288https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/21.288http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/21.288GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/RAA/21.288/catalog (Catalog of hot (O, B and A spectral type) ELSs identified from LAMOST DR5)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/21.288/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/21.288/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/21.288/catalog?GETtext/xml+votable180.050000true88.1401519425.7640750.0055555555555555564/81 83 1390-1391 1522 1528 1531 5/277 307 321-323 329 336 338-339 342 344 346-347 355-358 361 363-365 367 389 415 435-436 438-439 443 447 449-451 457 459 480 482-483 486 488 785-786 793-794 811 897 3565 3570 3661 3673 3698 5549 5552-5553 5608 5717 5908 5918-5919 5933 5935 5937 5939-5940 5942 5945 5948-5949 5953-5954 5962-5963 5984 5988-5990 5992-5993 5995-5996 5998 6032 6036 6039 6044-6045 6047 6081-6086 6092-6094 6116-6118 6120-6121 6123 6137-6138 6/257 262 267 463 472 509 781 798 837 852 858 1012 1026 1040 1043 1046 1090 1097 1115 1119 1141-1142 1145 1148-1150 1179 1181 1183 1186 1189 1200 1205 1211 1213-1215 1219-1220 1222 1235 1237 1241 1246 1249-1250 1252 1256 1267-1268 1270-1271 1273 1279-1280 1282-1283 1312-1313 1315 1320-1321 1324-1326 1348 1351 1360-1362 1365 1367 1374 1381-1383 1392 1394 1401 1405 1407 1409 1411 1413-1415 1417-1419 1436-1437 1439-1440 1442-1443 1448 1451 1464 1466-1467 1472 1474-1475 1477 1481 1483-1484 1486 1492 1497 1504 1506-1508 1510 1512 1514 1519 1531-1532 1539 1561 1564-1565 1578 1584 1619 1621 1623 1625 1627-1628 1630-1631 1636-1637 1639 1649-1651 1653-1655 1657-1658 1683 1685 1688-1689 1694-1695 1701 1714 1717 1724 1727 1729 1733 1735 1739 1748-1749 1751 1761 1764-1765 1767 1769 1771 1778 1781 1783-1784 1786-1787 1792 1794-1795 1808-1810 1812 1814 1816 1818-1819 1821-1824 1826 1832-1834 1840 1842-1845 1848 1854 1857 1864 1871 1888 1892 1925 1927 1936 1938-1939 1943 1948-1949 1956-1957 1959-1961 1963 1965-1968 1974 1980 1989 2081 2131 2154-2155 2263 2417 2478 2629 2636 2660 2743 2836 2847 2865 2881 2900 2909 2924 2927-2928 2936 2958 2967 2975 3002 3005 3009-3011 3013 3015-3016 3018-3020 3024 3026 3087 3093 3096-3097 3101 3113 3125 3127 3133-3137 3139 3153-3155 3159 3162 3165-3166 3170 3182 3184 3188-3189 3191 3193 3197-3198 3203 3219 3221 3223-3224 3226 3228 3230-3232 3238-3239 3241 3249 3260 3262 3266-3267 3270 3272 3284-3285 3328-3330 3337-3339 3342 3361-3362 3585 3587 3593 3596 3600-3601 3603 3609 4098 4110 4244 4293 4317 4638 4640 4655 4737-4738 4760 4768 4987 5349 5403 5459 5984 6088 6148 6154 6169 6177 6275 6280 6324 6358 6361 6363-6364 6659 6670 6690 6696 6740 6780 6810 6821-6822 6827 6832 6860 6873 6882 6888 6891 6896 6901 7042 7066 7120 7137 7315 9220 9698 9730 10073 10761 10900 11120 12579 13024 13033 13038-13039 13042 13048 13169-13170 13176 13215 13246 13262-13263 13277 13283 13288-13289 13291 13294-13295 13299 13304 13306 13339 13443 13718 13871 13875 13957 13962 13969 13980 14000 14003 14018 14026-14027 14030 14046 14050-14051 14054 14059 14063 14135 14154 14180 14183 14199 14235 14238 14245 14258-14259 14269 14273 14278-14279 14286 14304-14306 14387-14389 14391 14401 14410-14411 14416 14425 14428 14430-14431 14433 14440 14444 14449 14451-14454 14463 14583 14602-14603 14612-14613 14620 14622-14624 14630-14631 14633-14634 14636-14637 14639 14641 14643 14648 14652-14653 14657 14660-14661 14666 14670 14674 14680-14681 14683-14684 14689-14691 14696 14700 14702 14705-14706 14708-14709 14711-14712 14714-14715 14720 14723 14726 14736 14746-14747 14749-14750 14763-14765 14782 14787 14796 14799 14818 14830 14833 14838 14881 14955-14956 15117 15121 15155 15403 15406 15429 15431 15437 15439 15442 15449 15451-15452 15472-15473 15488 15875 19078 19087 19694 21437-21439 21455-21458 21474 21480 21484 21495-21497 21499 21501-21503 21628 21630 21735 21740 21743 21753 21756-21757 21777 21786 21795 21893 21928 21943-21944 21946 21967 21998 22003 22053-22054 22061 22075-22076 22078 22085 22095-22096 22101 22109 22113-22114 22116-22117 22120-22122 22124-22126 22128 22138-22140 22157 22162-22164 22166-22167 22170-22171 22173-22175 22189 22191-22194 22201-22202 22206-22207 22216-22218 22220-22221 22223 22225-22226 22228-22230 22234-22237 22239 22282 22322 22333-22334 22375 22401 22404 22408-22409 22411 22413 22421 22436 22440 22442-22443 22446-22447 22450 22458 22494 22504 22515 22732 22772 22804-22805 22809 22813 22851-22852 22857 22860 22862 22865 22873-22875 22877 22879 22886 22896 22900 22904 22910 22993 22998 23000-23001 23263 23295 23350 23394 23432 23553-23554 23558 23560 23562 23566 23573-23574 23581-23582 23584 23591 23597 23602-23603 23607 23619-23622 23624-23625 23627 23629 23637-23640 23642-23645 23649-23650 23653-23654 23658 23661-23664 23666-23668 23670-23671 23683 23685-23686 23688 23691 23697-23699 23701 23703 23705-23706 23709 23711-23713 23715-23716 23718 23721 23725 23727-23730 23736 23738-23739 23744 23752-23754 23764-23765 23767 23772-23774 23776 23778 23784 23788-23790 23802-23803 23806-23809 23811 23820-23821 23826-23827 23829 23832 23836 23840-23841 23844 23858 23862-23866 23869-23870 23874 23904-23905 23907 23911-23913 23917 23919 23932 23941-23943 23945 23947 23949-23951 23964 23967 23976-23978 23988 23996 23998-24000 24002 24007-24009 24011 24013 24017 24025 24034 24038 24041-24042 24046 24053 24085 24087 24116 24120 24132 24135 24137 24140 24142 24149 24151-24153 24155 24163 24165 24169-24171 24175 24186 24216 24223 24226 24232 24242 24246 24257 24261 24264-24265 24273 24275 24277 24281-24283 24285 24287 24290-24291 24296 24302 24311 24315 24317 24319-24320 24322-24323 24348 24350-24351 24380-24382 24384-24385 24387 24392-24393 24395 24397-24398 24403 24412 24414 24416-24418 24420 24424 24426 24430 24442 24476-24478 24489 24491 24512-24513 24515-24517 24520-24522 24524 24528 24531 24534 24539-24541 24545-24546 24556-24558 24561 24568 24570 24573-24574 26357 27182 27239 28002 28067 28480 29936 30288 30350 30405 30442 30471 30475 30496 30502 31047 31562 31593 31746 31788 31816 32276 32323 32468 36859 36861 450401.1166583743361574e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/21.288?format=asciiOpticalInfrareddefaultJ/other/RAA/21.288/catalogCatalog of hot (O, B and A spectral type) ELSs identified from LAMOST DR5recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintspNameName of the LAMOST spectra fits filemeta.id;meta.fitscharClassClassification of the sourcesrc.classcharSpTypeBest-fit spectral typesrc.spTypecharforbComComments on Forbidden lines by visual checkmeta.notecharHaClassClassification of Halpha profilemeta.notecharl6300Presence of [OI] 6300{AA} (1)meta.codecharl6363Presence of [OI] 6363{AA} (1)meta.codecharl6548Presence of [NII] 6548{AA} (1)meta.codecharl6584Presence of [NII] 6584{AA} (1)meta.codecharl6717Presence of [SII] 6717{AA} (1)meta.codecharl6732Presence of [SII] 6732{AA} (1)meta.codecharLAMOSTLAMOST designation ID, LAMOST JHHMMSS.ss+DDMMSS.smeta.id;meta.maincharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainsubClassSpectral type from LAMOSTsrc.spTypecharGmag? Gaia G magnitudemagphot.mag;em.optdoublenullableBPmag? Gaia BP magnitudemagphot.mag;em.opt.BdoublenullableRPmag? Gaia RP magnitudemagphot.mag;em.opt.RdoublenullableE(BP/RP)? Gaia BP/RP excessmagphot.color.excessdoublenullableBP-RP? Gaia (BP-RP) colourmagphot.color;em.opt.B;em.opt.Rdoublenullablee_Gmag? Error in Gaia G magnitudemagstat.error;phot.magdoublenullablesnruSignal-to-noise ratio in u bandpos.cartesian.x;arith.ratiofloatsnrg? Signal-to-noise ratio in g bandstat.snr;instr.bandpassfloatnullablesnrr? Signal-to-noise Ratio in r bandstat.snr;instr.bandpassfloatnullablesnri? Signal-to-noise Ratio in i bandstat.snr;instr.bandpassfloatnullablesnrz? Signal-to-noise Ratio in z bandstat.snr;pos.cartesian.zfloatnullable2MASS2MASS ID (HHMMSSss+DDMMSSs)meta.idcharJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS K magnitudemagphot.mag;em.IR.Kfloatnullablee_Jmag? Error in Jmagmagstat.error;phot.magfloatnullablee_Hmag? Error in Hmagmagstat.error;phot.magfloatnullablee_Kmag? Error in Kmagmagstat.error;phot.magfloatnullableQfl? 2MASS JHK photometric quality flagmeta.code.qual;photcharRfl? 2MASS source of JHK default magmeta.codecharXflg? 2MASS Extended source contamination flagmeta.codeintnullableW1mag? AllWISE W1 magnitudemagphot.mag;em.IR.3-4umfloatnullableW2mag? AllWISE W2 magnitudemagphot.mag;em.IR.4-8umfloatnullableW3mag? AllWISE W3 magnitudemagphot.flux.density;em.IR.8-15umfloatnullableW4mag? AllWISE W4 magnitudemagphot.flux.density;em.IR.15-30umfloatnullablee_W1mag? Error in W1magmagstat.error;phot.magfloatnullablee_W2mag? Error in W2magmagstat.error;phot.magfloatnullablee_W3mag? Error in W3magmagstat.error;phot.magfloatnullablee_W4mag? Error in W4magmagstat.error;phot.magfloatnullablee_B-V? Error in B-V colormagstat.error;phot.color;em.opt.BfloatnullableVmag? APASS V magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Error in APASS Vmagmagstat.error;phot.magfloatnullableBmag? APASS B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Error in APASS Bmagmagstat.error;phot.magfloatnullablePS1? PANSTARRS ID (objID) (TRONCATED !!!!)meta.iddoublenullableAv? Extinction in V magnitudemagphys.absorptiondoublenullableb_Av? Lower limit of extinction in V magnitudemagphys.absorption;stat.mindoublenullableB_Av? Upper limit of extinction in V magnitudemagphys.absorption;stat.maxdoublenullablen(J-K)? (J-K) lada index (2)magphot.colordoublenullablen(K-W2)? (K-W2) lada index (2)magphot.colordoublenullable(J-H)0? Extinction corrected (J-H) colormagphot.color;em.IR.J;em.IR.Hdoublenullable(H-K)0? Extinction corrected (H-K) colormagphot.color;em.IR.H;em.IR.Kdoublenullable(W1-W2)0? Extinction corrected (W1-W2) colormagphot.color;em.IR;em.IRdoublenullable(W2-W3)0? Dextinction corrected (W2-W3) colormagphot.color;em.IR;em.IRdoublenullablee_(J-H)0? Error in extinction corrected (J-H) colormagstat.errordoublenullablee_(H-K)0? Error in extinction corrected (H-K) colormagstat.errordoublenullable(BP-RP)0? Extinction corrected (BP-RP) colormagphot.color;em.opt.B;em.opt.RdoublenullableVMAG? Absolute APASS V magmagphys.magAbsdoublenullableB_VMAG? Upper limit of Absolute APASS V magmagphys.magAbs;stat.maxdoublenullableb_VMAG? Lower limit of Absolute APASS V magmagphys.magAbs;stat.mindoublenullableE_VMAG? Error in upper limit of Absolute APASS V magmagstat.error;stat.maxdoublenullablee_VMAG? Error in lower limit of Absolute APASS V magmagstat.errordoublenullableGaiaDR3? Gaia Source ID (TRONCATED !!!)meta.iddoublenullableRAGdeg? Gaia Right Ascension (ICRS) at Ep=2016.0degpos.eq.ranullablee_RAGdeg? Error in Gaia Right Ascensionmasstat.errorfloatnullableDEGdeg? Gaia Declination (ICRS) at Ep=2016.0degpos.eq.decnullablee_DEGdeg? Error in Gaia Declinationmasstat.errorfloatnullablePlx? Gaia Parallaxmaspos.parallaxfloatnullablee_Plx? Error in Gaia Parallaxmasstat.error;pos.parallaxfloatnullableRPlx? Gaia parallax divided by error in parallaxstat.fit.omcdoublenullablePM? Gaia total proper motionmas/yrpos.pmdoublenullablepmRA? Gaia Proper motion in RAmas/yrpos.pm;pos.eq.rafloatnullablee_pmRA? Error in Gaia Proper motion in RAmas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE? Gaia Proper motion in Decmas/yrpos.pm;pos.eq.decfloatnullablee_pmDE? Error in Gaia Proper motion in Declinationmas/yrstat.error;pos.pm;pos.eq.decfloatnullablee_BPmag? Error in Gaia BP magnitudemagstat.error;phot.magdoublenullablee_RPmag? Error in Gaia RP magnitudemagstat.error;phot.magdoublenullablergeo? Gaia median geometric distancepcpos.distancedoublenullableb_rgeo? Gaia lower geometric distance limitpcpos.distance;stat.mindoublenullableB_rgeo? Gaia upper geometric distance limitpcpos.distance;stat.maxdoublenullablerpgeo? Gaia median photo-geometric distancepcpos.distancedoublenullableb_rpgeo? Gaia lower photo-geometric distance limitpcpos.distance;stat.mindoublenullableB_rpgeo? Gaia upper photo-geometric distance limitpcpos.distance;stat.maxdoublenullable(B-V)0? Extinction corrected APASS (B-V) colormagphot.color;em.opt.B;em.opt.VdoublenullableAllWISEAllWISE ID (JHHMMSS.ss+DDMMSS.s)meta.idcharqphAllWISE photometric quality flagmeta.code.qual;photcharName-our? Name assignedmeta.idcharName-uniqUnique Name assigned after considering duplicates (LEMC NNNN)meta.idcharDup? Gaia Duplicated source flagmeta.code.errorcharruwe? Gaia RUWEstat.errorfloatnullableB-V? B-V colormagphot.color;em.opt.B;em.opt.Vfloatnullable