LAMOST catalog of early-type emission-line stars J/other/RAA/16.1 ivo://CDS.VizieR/J/other/RAA/16.138 doi:10.26093/cds/vizier/dx/bgkbdi CDS Hou W. Luo A-L. Hu J.-Y. Yang H.-F. Du C.-D. Liu C. Lee C.-D.,Lin C.-C. Wang Y.-F. Zhang Y. Cao Z.-H. Hou Y.-H. 2026-02-10T20:07:16Z 2021-10-01T13:49:33Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr emission-line-stars early-type-stars We present a catalog including 11204 spectra of 10436 early-type emission-line stars from LAMOST DR2, among which 9752 early-type emission-line spectra are newly discovered. For these early-type emission-line stars, we discuss the morphological and physical properties of their low-resolution spectra. In this spectral sample, the H{alpha} emission profiles display a wide variety of shapes. Based on the H{alpha} line profiles, these spectra are categorized into five distinct classes: single-peak emission, single-peak emission in absorption, double-peak emission, double-peak emission in absorption, and P-Cygni profiles. To better understand what causes the H{alpha} line profiles, we divide these objects into four types from the perspective of physical classification, which include classical Be stars, Herbig Ae/Be stars, close binaries and spectra contaminated by HII regions. The majority of Herbig Ae/Be stars and classical Be stars are identified and separated using a (H-K, K-W1) color-color diagram.We also discuss 31 binary systems that are listed in the SIMBAD on-line catalog and identify 3600 spectra contaminated by HII regions after cross-matching with positions in the Dubout-Crillon catalog (1976, Cat. J/A+AS/25/25. A statistical analysis of line profiles versus classifications is then conducted in order to understand the distribution of H{alpha} profiles for each type in our sample. Finally, we also provide a table of 172 spectra with FeII emission lines and roughly calculate stellar wind velocities for seven spectra with P-Cygni profiles. 2016RAA....16i...6H https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/16.138 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to J/A+AS/25/25 : HII regions of the Northern Milky Way (Dubout-Crillon+ 1976) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/16.138 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/16.138 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/16.138 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/16.138 https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/16.138 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/16.138 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/other/RAA/16.138/catalog (Catalog) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/16.138/catalog? https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/16.138/catalog? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/16.138/catalog? 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31593 31784 31876 31889 31932 31935 32276-32277 32310 32466 32472 32496 32498 32500 32556 32642 32646 32652 32671 32732 36719 36731 36734 36804 36820 36844 36855 36859 40892 40895 40944 45045 49006 49106 49109 49119 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/16.138?format=ascii default J/other/RAA/16.138/catalog Catalog recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int LAMOST LAMOST designation (JHHMMSS.ss+DDMMSS.s) meta.id;meta.main char RAJ2000 Right ascension (J2000) deg pos.eq.ra;meta.main indexed DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main indexed W1mag ? W1 magnitude mag phot.mag;em.IR.3-4um float nullable e_W1mag ? rms uncertainty on W1mag mag stat.error;phot.mag float nullable Hmag ? H magnitude mag phot.mag;em.IR.H float nullable e_Hmag ? rms uncertainty on Hmag mag stat.error;phot.mag float nullable Kmag ? K magnitude mag phot.mag;em.IR.K float nullable e_Kmag ? rms uncertainty on Kmag mag stat.error;phot.mag float nullable HaType Morphologial type of H{alpha} profile src.class char objType Object type, this paper meta.bib char SIMBADType Simbad object type src.class char