J/ApJS/182/131ivo://CDS.VizieR/J/ApJS/182/131doi:10.26093/cds/vizier.21820131CDSRathborne J.M.Johnson A.M.Jackson J.M.Shah R.Y.Simon R.2012-11-13T12:10:03Z2010-02-11T09:57:29ZCDS support team

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

cds-question@unistra.frmolecular-cloudssurveysco-line-emissionThe Boston University-Five College Radio Astronomy Observatory (BU-FCRAO) Galactic Ring Survey (GRS) of ^13^CO J=1->0 emission covers Galactic longitudes 18<l<55.7{deg} and Galactic latitudes |b|<=1{deg}. Using the SEQUOIA array on the FCRAO 14m telescope, the GRS fully sampled the ^13^CO Galactic emission (46" angular resolution on a 22" grid) and achieved a spectral resolution of 0.21km/s. Because the GRS uses ^13^CO, an optically thin tracer, rather than ^12^CO, an optically thick tracer, the GRS allows a much better determination of column density and also a cleaner separation of velocity components along a line of sight. With this homogeneous, fully sampled survey of ^13^CO emission, we have identified 829 molecular clouds and 6124 clumps throughout the inner Galaxy using the CLUMPFIND algorithm. Here we present details of the catalog and a preliminary analysis of the properties of the molecular clouds and their clumps. Moreover, we compare clouds inside and outside of the 5kpc ring and find that clouds within the ring typically have warmer temperatures, higher column densities, larger areas, and more clumps compared with clouds located outside the ring. This is expected if these clouds are actively forming stars. This catalog provides a useful tool for the study of molecular clouds and their embedded young stellar objects.2009ApJS..182..131Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/182/131CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/551/852 : FCRAO CO survey of the outer Galaxy (Heyer+, 2001)J/ApJS/144/47 : Outer galaxy molecular cloud catalog (Brunt+, 2003)J/PASJ/56/313 : 13CO survey of Mon + CMa molecular clouds (Kim+, 2004)J/A+A/474/891 : 13CO observations of YSOs in South Gal. plane (Urquhart+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/182/131https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/182/131http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/182/131https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/182/131https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/182/131http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/182/131GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/182/131/table2 (Properties of the molecular clouds identified in the Galactic Ring Survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/182/131/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/182/131/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/182/131/table2?GETtext/xml+votable180.050000true292.577518.31840.005555555555555556Cone search capability for table J/ApJS/182/131/table3 (Properties of the molecular clumps identified in the Galactic Ring Survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/182/131/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/182/131/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/182/131/table3?GETtext/xml+votable180.050000true292.548918.31050.0055555555555555565/7377 7382 7383 7554 7564 7578 7579 7604 7605 7650 7651 7654 7672 7673 7678 7679 6/12968 12970 12971 14336 29163 29505 29506 29507 29517 29520 29522 29523 29526 29527 29556 29557 30222 30223 30240 30241 30243 30244 30245 30247 30260 30262 30263 30268 30269 30271 30306 30328 30330 30331 30334 30401 30404 30405 30407 30428 30429 30592 30594 30595 30598 30599 30622 30623 30629 30640 30641 30644 30645 30647 30666 30700 30701 30706 30707 30710 32085https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/182/131?format=asciiRadiodefaultJ/ApJS/182/131/table2Properties of the molecular clouds identified in the Galactic Ring SurveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGRSMCMolecular cloud name (GLLL.ll+BB.bb) \linkRole{clumps detected in the could } (1)meta.id;meta.maincharprimaryGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latVlsrVelocity of the peak voxel of the emissionkm/sphys.veloc;stat.maxfloatDeltaVVelocity FWHM (2)km/sspect.line.widthfloatTmbMain beam temperature of the peak voxelKphys.temperature;meta.main;stat.maxfloatGLONcGalactic longitude of centroid (3)degpos.galactic.lonGLATcGalactic latitude of centroid (3)degpos.galactic.latfloataSemimajor axis of fitted ellipse (4)degphys.angSize.smajAxis;meta.modelledfloatbSemiminor axis of fitted ellipse (4)degphys.angSize.sminAxis;meta.modelledfloatpa[-90/90] Position angle of fitted ellipse (5)degpos.posAng;meta.modelledintAreaProjected two-dimensional areadeg**2phys.angSizefloatTavAverage main beam temperature of the cloud (6)Kphys.temperature;meta.mainfloatIpeakPeak integrated intensityK.km/sspect.line.intensityfloatItotTotal ^13^CO integrated intensityK.km.s**-1.deg**2spect.line.intensityfloatN(H2)Peak H2 column density1e+22cm**-2phys.columnDensity;stat.maxdoubleFlag[YXV- ] Boundary flag(s) (G1)meta.code.errorchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexedJ/ApJS/182/131/table3Properties of the molecular clumps identified in the Galactic Ring SurveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGRSMCMolecular cloud name (from the cloud catalog)meta.id.parentcharClumpClump number (cNNN) (1)meta.id;meta.maincharGLONGalactic longitude of clumpdegpos.galactic.lonGLATGalactic latitude of clumpdegpos.galactic.latVlsrLSR velocity of the peak voxel of the emissionkm/sphys.veloc;pos.lsrfloatdLonFWHM extent in galactic longitudedegphys.angSizefloatdLatFWHM extent in galactic latitudedegphys.angSizefloatdVFWHM extent in velocitykm/sphys.veloc;arith.difffloatTmbMain beam temperature of the peak voxelKphys.temperature;meta.main;stat.maxfloatAreaProjected two-dimensional areadeg**2phys.angSizedoubleIpeakPeak integrated intensityK.km/sspect.line.intensityfloatItotTotal ^13^CO integrated intensityK.km.s**-1.deg**2spect.line.intensitydoubleN(H2)Peak H2 column densitycm**-2phys.columnDensity;stat.maxdoubleFlag[XVY- ] Boundary flag(s) (G1)meta.code.errorchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed