J/AJ/127/1117ivo://CDS.VizieR/J/AJ/127/1117doi:10.26093/cds/vizier.51271117CDSReipurth B.Pettersson B.Armond T.Bally J.Vaz L.P.R.2023-04-06T16:51:00Z2006-05-27T18:04:31ZCDS support team

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

cds-question@unistra.frmolecular-cloudspre-main-sequence-starsbe-starsinfrared-photometryWe present a deep survey of H{alpha} emission-line stars in the NGC 2264 region using wide-field objective prism films. We find 357 H{alpha} emission-line stars, of which 113 were previously detected, within an area of 3{deg}x3{deg} centered on the Cone Nebula, with a majority of stars being concentrated in a dense cluster at the center of the region. We present a large-scale CO map of NGC 2264 and find a strong correlation between the cluster of H{alpha} emission-line stars and the most massive core in the cloud complex. A more extended halo of stars poorly correlated with the gas may represent stars that have drifted away from their birth place, suggesting that star formation has taken place in NGC 2264 for several million years.2004AJ....127.1117Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/127/1117CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/284 : The USNO-B1.0 Catalog (Monet+ 2003)J/AJ/127/2659 : NGC 2264 Chandra observations (Ramirez+, 2004)J/AJ/123/1528 : UBV(RI)_C_ and JHK photometry in NGC 2264 (Rebull+, 2002)J/A+A/355/651 : HRI observations of PMS stars in NGC 2264 (Flaccomio+, 2000)J/A+A/345/521 : BVRI photometry of NGC 2264 (Flaccomio+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/127/1117https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/127/1117http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/127/1117https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/127/1117https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/127/1117http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/127/1117GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/127/1117/table2 (H{alpha} Emission-Line Stars in NGC 2264)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/1117/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/1117/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/1117/table2?GETtext/xml+votable180.050000true99.08041710.9072220.0055555555555555565/5909 6/22271 23633 23645 23808 238108.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/127/1117?format=asciiInfrareddefaultJ/AJ/127/1117/table2H{alpha} Emission-Line Stars in NGC 2264recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintESO-HA? ESOH{alpha} identification number (1)meta.id;meta.mainintnullableLkHa? LH{alpha} identification number, Em* LkHA NNN in Simbad (2)meta.idintnullableKHA? KH{alpha} identification number (3)meta.idintnullableNGC2264? Walker (1956ApJS....2..365W) identification number, NGC 2264 NNN in Simbadmeta.idintnullablem_NGC2264Multiplicity index on NGC2264meta.code.multipcharRMS? Rebull et al. (2001, Cat. <J/AJ/123/1528>) number, Cl* NGC 2264 RMS NNNNmeta.idcharRAJ2000Hour of right ascension (J2000) (4)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000) (4)pos.eq.dec;meta.mainHaH{alpha} line strength (5)spect.line.intensitycharBmag? USNO-B catalog blue (IIIa-J emulsion) photographic magnitudemagphot.mag;em.opt.Bfloatnullablef_Bmag[*] Indicates data extracted from GSC 2.2meta.codecharRmag? USNO-B catalog red (IIIaF emulsion) photographic magnitudemagphot.mag;em.opt.Rfloatnullablef_Rmag[*] Indicates data extracted from GSC 2.2meta.codecharNmag? USNO-B catalog far-red (IV-N emulsion) photographic magnitudemagphot.mag;em.optfloatnullableJmag? 2MASS J-band magnitudemagphot.mag;em.IR.Jfloatnullablef_Jmag[u] Indicates an upper valuemeta.codecharHmag? 2MASS H-band magnitudemagphot.mag;em.IR.Hfloatnullablef_Hmag[u] Indicates an upper valuemeta.codecharKsmag? 2MASS K_s_ band magnitudemagphot.mag;em.IR.Kfloatnullablef_Ksmag[u] Indicates an upper valuemeta.codecharSurveysGet details of nearby stars in the surveys 2MASS (II/246), USNO-B1(I/284), GSC2.2 (I/271)meta.ref.urlchar