J/ApJ/720/679ivo://CDS.VizieR/J/ApJ/720/679doi:10.26093/cds/vizier.17200679CDSBeerer I.M.Koenig X.P.Hora J.L.Gutermuth R.A.Bontemps S.,Megeath S.T.Schneider N.Motte F.Carey S.Simon R.Keto E.,Smith H.A.Allen L.E.Fazio G.G.Kraemer K.E.Price S.Mizuno D.,Adams J.D.Hernandez J.Lucas P.W.2017-12-18T07:57:01Z2012-07-13T07:03:28ZCDS support team

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

cds-question@unistra.frstellar-spectral-typesyoung-stellar-objectsvisible-astronomysloan-photometryinfrared-sourcesWe present new images and photometry of the massive star-forming complex Cygnus X obtained with the Infrared Array Camera (IRAC) and the Multiband Imaging Photometer for Spitzer (MIPS) on board the Spitzer Space Telescope. A combination of IRAC, MIPS, UKIRT Deep Infrared Sky Survey, and Two Micron All Sky Survey data are used to identify and classify young stellar objects (YSOs). Of the 8231 sources detected exhibiting infrared excess in Cygnus X North, 670 are classified as class I and 7249 are classified as class II. Using spectra from the FAST Spectrograph at the Fred L. Whipple Observatory and Hectospec on the MMT, we spectrally typed 536 sources in the Cygnus X complex to identify the massive stars. We find that YSOs tend to be grouped in the neighborhoods of massive B stars (spectral types B0 to B9).2010ApJ...720..679Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/720/679CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/310 : UKIDSS-DR7 Large Area Survey (Lawrence+ 2012)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/A+A/527/A135 : Gas dynamics in Massive Dense Cores in Cygnus-X (Csengeri+,J/A+A/476/1243 : Millimeter continuum mapping of Cygnus X (Motte+, 2007)J/A+A/375/539 : JHK photometry of compact HII regions in Cyg X (Comeron+,J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)J/A+A/241/551 : Radio continuum in Cygnus X region (Wendker+ 1991)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/720/679https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/720/679http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/720/679https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/720/679https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/720/679http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/720/679GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/720/679/table7 (Optical spectroscopy classifications)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/720/679/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/720/679/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/720/679/table7?GETtext/xml+votable180.050000true308.893041741.82963890.0055555555555555565/3670 6/14671 14693 14704 14705https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/720/679?format=asciiOpticalInfrareddefaultJ/ApJ/720/679/table7Optical spectroscopy classificationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharr'magSloan r' band magnitude (1)magphot.mag;em.opt.Rfloate_r'magError in r'magmagstat.error;phot.mag;em.opt.Rfloati'magSloan i' band magnitude (1)magphot.mag;em.opt.Ifloate_i'magError in i'magmagstat.error;phot.mag;em.opt.IfloatSpTMK spectral typesrc.spTypechare_SpTError in SpTstat.errorfloatAVThe V band extinctionmagphys.absorption;em.opt.VfloatXCross-match(es) with 2MASS, and SDSS-DR8 data within 1.5"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from object name (right ascension part)degpos.eq.ra;meta.main_DEPositions from object name (declination part)degpos.eq.dec;meta.main