J/ApJS/252/20ivo://CDS.VizieR/J/ApJS/252/20doi:10.26093/cds/vizier.22520020CDSLin+Lin Z.Sun Y.Xu YeYang JiLi Y.2021-07-05T12:20:11Z2021-05-27T08:32:32ZCDS support team

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

cds-question@unistra.frmolecular-cloudsco-line-emissioninterstellar-mediumgalaxy-kinematicssurveysUsing the Purple Mountain Observatory 13.7m millimeter telescope at Delingha in China, we have conducted a large-scale simultaneous survey of ^12^CO, ^13^CO, and C^18^O (J=1-0) toward the CMa OB1 complex with a sky coverage of 16.5deg^2^ (221.5{deg}<=l<=227{deg}, -2.5{deg}<=b<=0.5{deg}). Emission from the CMa OB1 complex is found in the range 7km/s<=V_LSR_<=25km/s. The large-scale structure, physical properties, and chemical abundances of the molecular clouds are presented. A total of 83 C^18^O molecular clumps are identified with the GaussClumps algorithm within the mapped region. We find that 94% of these C18O molecular clumps are gravitationally bound. The relationship between their size and mass indicates that none of the C^18^O clumps has the potential to form high-mass stars. Using a semiautomatic IDL algorithm, we newly discover 85 CO outflow candidates in the mapped area, including 23 bipolar outflow candidates. Additionally, a comparative study reveals evidence for a significant variety of physical properties, evolutionary stages, and levels of star formation activity in different subregions of the CMa OB1 complex.2021ApJS..252...20Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/252/20CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/20 : Catalogue of HII Regions (Sharpless 1959)J/A+AS/103/541 : Arcetri Catalogue of H2O Maser Sources (Brand+ 1994)J/A+AS/132/211 : Interstellar SiO sources (Harju+ 1998)J/PASJ/56/313 : 13CO survey of Mon & CMa molecular clouds (Kim+, 2004)J/ApJ/665/1194 : Dense cores in the Orion A cloud survey (Ikeda+, 2007)J/ApJ/684/1240 : Prestellar cores in Perseus, Serpens & Oph (Enoch+, 2008)J/MNRAS/418/2121 : CO 3-2 observations of outflows in W5 (Ginsburg+, 2011)J/ApJ/756/76 : Planck cold dust clumps CO survey (Wu+, 2012)J/ApJ/772/45 : Hi-GAL: star formation in the 3rd quadrant (Elia+, 2013)J/MNRAS/431/1752 : ATLASGAL 6.7GHz methanol masers (Urquhart+, 2013)J/A+A/564/A68 : Orion A GMC 13CO and C18O maps (Shimajiri+, 2014)J/AJ/147/46 : Properties of clumps in the NAN complex (Zhang+, 2014)J/ApJS/219/20 : Outflows and bubbles in Taurus (Li+, 2015)J/ApJ/798/L27 : CO obs. of molecular clouds in the 2nd quadrant (Sun+, 2015)J/A+A/594/A58 : Hi-GAL l=224deg region CO(1-0) data cubes (Olmi+, 2016)J/ApJS/224/7 : CO obs. of the outer arm in the 2nd quadrant (Du+, 2016)J/ApJS/230/17 : CO of MCs in the Extreme Outer Galaxy region (Sun+, 2017)J/ApJS/235/3 : Outflows associated with ATLASGAL clumps (Yang+, 2018)J/ApJS/242/19 : CO outflow candidates toward W3/4/5 complex (Li+, 2019)J/ApJS/240/26 : YSO cand. in Canis Major OB1 association (Sewilo+, 2019)J/A+A/633/A147 : FQS. Galactic Plane CO survey (Benedettini+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/252/20https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/252/20http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/252/20https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/252/20https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/252/20http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/252/20GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/252/20/tablea1 (The physical properties of C^18^O clumps)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/252/20/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/252/20/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/252/20/tablea1?GETtext/xml+votable180.050000true106.12204-10.192180.005555555555555556Cone search capability for table J/ApJS/252/20/tableb1 (Outflow candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/252/20/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/252/20/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/252/20/tableb1?GETtext/xml+votable180.050000true106.88886-8.658880.005555555555555556Cone search capability for table J/ApJS/252/20/tablec1 (Physical properties of the outflow candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/252/20/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/252/20/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/252/20/tablec1?GETtext/xml+votable180.050000true106.88886-8.658880.0055555555555555565/5409 5411 6/21643 21656 21668 21669 21680https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/252/20?format=asciiRadiodefaultJ/ApJS/252/20/tablea1The physical properties of C^18^O clumpsTex[7.2/25.4] Excitation temperatureKphys.atmol.excitationfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of each clump, as defined by its central Galactic Coordinates, GLLL.lll+/-BB.bbbmeta.id;meta.maincharVLSR[9.9/20.7] Central velocitykm/sphys.veloc;em.wl.central;pos.lsrfloatdv[0.17/0.8] Clump velocity dispersionkm/sphys.veloc.dispersionfloatTC18O[1.2/3.7] Peak main beam temperature of the C^18^O emission peak fitted by GaussClumpsKspect.line.intensity;stat.maxfloatT12CO[3.9/22] Main beam temperature of ^12^CO peak within the same area of clumps in ^12^CO dataKspect.line.intensity;meta.main;stat.maxfloatArea[3.4/44] Angular area of each clump, estimated by GaussClumpsarcmin**2phys.angAreafloattau[0.07/0.6] Optical depthphys.absorption.opticalDepthfloatsigma-T[0.16/0.3] Thermal velocity dispersionkm/sphys.veloc.dispersionfloatsigma-NT[0.16/0.8] Non-thermal velocity dispersionkm/sphys.veloc.dispersionfloatReff[0.3/1.3] Effective radiuspcphys.size.radiusfloatMLTE[22/979] LTE masssolMassphys.massintMvir[16/540] Virial masssolMassphys.massintaVir[0.3/3.7] Virial parameterphys.mass;arith.ratiofloatSeqIndex of associated outflow candidatemeta.id.assocchar_GlonPositions from Galactic names (longitude part)degpos.galactic.lon_GlatPositions from Galactic names (latitude part)degpos.galactic.lat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedJ/ApJS/252/20/tableb1Outflow candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNmNumber of measurements for this outflow (link to Table C1)meta.numberintnullableSeq[1/85] Outflow indexmeta.id;meta.mainintprimaryGLON[222.4/226.6] Central Galactic longitude of outflowdegpos.galactic.lonGLAT[-2.4/-0.2] Central Galactic latitude of outflowdegpos.galactic.latbw0[5.8/15.1]? Velocity range, min, of the blue line wingkm/sphys.veloc;stat.minfloatnullablebw1[7.6/16.8]? Velocity range, max, of the blue line wingkm/sphys.veloc;stat.maxfloatnullablerw0[11.4/22.1]? Velocity range, min, of the red line wingkm/sphys.veloc;stat.minfloatnullablerw1[14/26.7]? Velocity range, max, of the red line wingkm/sphys.veloc;stat.maxfloatnullableType[BDR] Outflow Type (1)meta.codechar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedJ/ApJS/252/20/tablec1Physical properties of the outflow candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/85] Index of outflow candidatemeta.id;meta.mainintLobe[BR] Type of lobe candidate, B=Blue; R=Redmeta.codecharGLON[222.4/226.6] Central Galactic longitude of lobedegpos.galactic.lonGLAT[-2.4/-0.2] Central Galactic latitude of lobedegpos.galactic.latVpk[8.3/21] Velocity of 12CO peak emissionkm/sspect.dopplerVeloc;stat.maxfloatpsi[0.5/0.95] Lowest contour boundary of each lobe (1)phys.areafloatArea[1.2/9.5] Angular area of each lobe, defined by the lowest contour level of each lobearcmin**2phys.angArea;stat.minfloatdv-lobe[-7.1/7.3] Velocity, outflow lobe candidate (2)km/sphys.velocfloatl-lobe[0.6/1.9] Length, outflow lobe candidate, parsecs (2)pcpos.distance;phys.sizefloatM-lobe[0.03/1.2] Mass, outflow lobe candidate, solar units (2)solMassphys.massdoublePmom[0.05/5.3] Momentum, outflow lobe candidate (2)solMass.km/sphys.angMomentumdoubleE[1e+40/3.2e+44] Kinetic energy (2)1e-07Jphys.energydoublet[78900/576000] Dynamical timescale (2)yrtime.scaledoubleLum[8.8e+28/8.6e+31] Luminosity (2)1e-07Wphys.luminositydouble_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexed