J/ApJS/209/39ivo://CDS.VizieR/J/ApJS/209/39doi:10.26093/cds/vizier.22090039CDSBurleigh K.J.Bieging J.H.Chromey A.Kulesa C.Peters W.L.2014-02-21T11:52:04Z2014-02-05T15:07:06ZCDS support team

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

cds-question@unistra.frmolecular-cloudsradio-astronomyinterstellar-mediumsurveysWe mapped ^12^CO and ^13^CO J=2-1 emission over 1.04deg^2^ of the Serpens molecular cloud with 38" spatial and 0.3km/s spectral resolution using the Arizona Radio Observatory Heinrich Hertz Submillimeter Telescope. Our maps resolve kinematic properties for the entire Serpens cloud. We also compare our velocity moment maps with known positions of young stellar objects (YSOs) and 1.1 mm continuum emission. We find that ^12^CO is self-absorbed and ^13^CO is optically thick in the Serpens core. Outside of the Serpens core, gas appears in filamentary structures having LSR velocities which are blueshifted by up to 2km/s relative to the 8km/s systemic velocity of the Serpens cloud. We show that the known Class I, flat, and Class II YSOs in the Serpens core most likely formed at the same spatial location and have since drifted apart. The spatial and velocity structure of the ^12^CO line ratios implies that a detailed three-dimensional radiative transfer model of the cloud will be necessary for full interpretation of our spectral data. The "starless cores" region of the cloud is likely to be the next site of star formation in Serpens.2013ApJS..209...39Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/209/39CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/196/18 : CO survey of galactic molecular clouds. II. (Bieging+, 2011)J/ApJS/191/232 : CO survey of W51 molecular cloud. I. (Bieging+, 2010)J/A+A/519/A27 : CO maps in Serpens (Duarte-Cabral+, 2010)J/ApJ/692/973 : Protostars in Perseus, Serpens and Ophiuchus (Enoch+, 2009)J/ApJ/684/1240 : Prestellar cores in Perseus, Serpens & Oph. (Enoch+, 2008)J/ApJ/669/493 : Spitzer/Chandra YSOs in Serpens cloud core (Winston+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/209/39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/209/39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/209/39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/209/39https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/209/39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/209/39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/209/39/list (List of the calibrated brightness temperature image cubes of ^12^CO and ^13^CO J=2-1)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/209/39/list?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/209/39/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/209/39/list?GETtext/xml+votable180.050000true277.333350.50.0055555555555555566/30363https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/209/39?format=asciiRadiodefaultJ/ApJS/209/39/listList of the calibrated brightness temperature image cubes of ^12^CO and ^13^CO J=2-1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTitleTitle of the filemeta.noteBand[220/231] Observed band in GHzGHzinstr.bandpassfloatRAJ2000Right ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNx[305] Number of pixels along X-axis (RA-GLS)pixmeta.numberintNy[721] Number of pixels along Y-axis (DEC-GLS)pixmeta.numberintNz[133] Number of pixels along Z-axis (VELOCITY)pixmeta.numberintScale[10] Scale of the imagearcsec/pixinstr.scaleintVelminMinimum velocity valuem/sphys.velocintVelmaxMaximum velocity valuem/sphys.velocintFileNameName of the FITS file in subdirectory fitsmeta.id;meta.fitscharFITSDownload the FITS cubemeta.ref.urlchar