J/ApJ/838/49ivo://CDS.VizieR/J/ApJ/838/49doi:10.26093/cds/vizier.18380049CDSXiong F.Chen X.Yang J.Fang M.Zhang S.Zhang M.Du X.Long W.2020-01-29T13:40:53Z2017-12-05T15:39:11ZCDS support team

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

cds-question@unistra.frco-line-emissioninterstellar-mediuminfrared-photometryyoung-stellar-objectsmolecular-cloudsWe present large-field (4.25x3.75deg^2^) mapping observations toward the Galactic region centered at l=150{deg},b=3.5{deg} in the J=1-0 emission line of CO isotopologues (^12^CO, ^13^CO, and C^18^O), using the 13.7m millimeter-wavelength telescope of the Purple Mountain Observatory. Based on the ^13^CO observations, we reveal a filamentary cloud in the Local Arm at a velocity range of -0.5 to 6.5km/s. This molecular cloud contains 1 main filament and 11 sub-filaments, showing the so-called "ridge-nest" structure. The main filament and three sub-filaments are also detected in the C^18^O line. The velocity structures of most identified filaments display continuous distribution with slight velocity gradients. The measured median excitation temperature, line width, length, width, and linear mass of the filaments are ~9.28K, 0.85km/s, 7.30pc, 0.79pc, and 17.92M_{sun}_/pc, respectively, assuming a distance of 400pc. We find that the four filaments detected in the C^18^O line are thermally supercritical, and two of them are in the virialized state, and thus tend to be gravitationally bound. We identify in total 146 ^13^CO clumps in the cloud, about 77% of the clumps are distributed along the filaments. About 56% of the virialized clumps are found to be associated with the supercritical filaments. Three young stellar object candidates are also identified in the supercritical filaments, based on the complementary infrared data. These results indicate that the supercritical filaments, especially the virialized filaments, may contain star-forming activities.2017ApJ...838...49Xhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/838/49CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/39 : Composite CO Survey of the Milky Way (Dame+ 1987)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)II/311 : WISE All-Sky Data Release (Cutri+ 2012)J/A+A/440/151 : Observations at 850um in Perseus clusters (Hatchell+, 2005)J/A+A/505/405 : A catalogue of Spitzer dark clouds (Peretto+, 2009)J/A+A/533/A17 : Coalsack CO maps (Beuther+, 2011)J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)J/AJ/147/46 : Properties of clumps in the NAN complex (Zhang+, 2014)J/A+A/584/A91 : Catalog of dense cores in Aquila from Herschel (Konyves+, 2015)J/ApJ/828/59 : Molecular clouds in the Milky Way with CO obs. (Su+, 2016)J/ApJS/224/7 : CO obs. of the outer arm in the 2nd quadrant (Du+, 2016)J/ApJS/230/17 : CO obs. of MCs in the Extreme Outer Galaxy region (Sun+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/838/49https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/838/49http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/838/49https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/838/49https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/838/49http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/838/49GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/838/49/table2 (Properties of clumps in the G150 region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/838/49/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/838/49/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/838/49/table2?GETtext/xml+votable180.050000true67.326654.1240.005555555555555556Cone search capability for table J/ApJ/838/49/table3 (Infrared photometric magnitudes of YSO candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/838/49/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/838/49/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/838/49/table3?GETtext/xml+votable180.050000true61.208649154.46242490.0055555555555555565/489 6/1934 1935 1946 1947 1953 1955 1961 1962 1963 1964 1965 1966 1968 1970 3328 3329 33338.157980699529898e-21 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/838/49?format=asciiInfraredRadiodefaultJ/ApJ/838/49/table1Properties of filamentsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDFilament identifier (F1 to F12)meta.id;meta.maincharTex[7.9/10.2] Excitation temperatureKphys.atmol.excitationfloatDelV[0.6/1.1] Line width {Delta}v in the ^13^CO emissionkm/sspect.line.widthfloatMass[67.2/850] LTE mass traced by the ^13^CO emissionsolMassphys.massfloatLength[3.7/13.5] Length in the ^13^CO emissionpcsrc.morph.scLengthfloatWidth[0.4/1.8] Width in the ^13^CO emissionpcphys.size.diameterfloatM/l[10.2/63.4] Linear mass traced by the ^13^CO emissionsolMass/pcstat.fit.omcfloatMC18O[16/200.3]? LTE mass traced by the C^18^O emissionsolMassphys.massfloatnullableJ/ApJ/838/49/table2Properties of clumps in the G150 regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMWISPClump identifier (GLLL.lll+BB.bbb)phys.masscharVel[0.7/5.4] LSR velocitykm/sphys.veloc;pos.lsrfloatRad[0.01/0.2] Physical radiuspcphys.size.radiusfloatTex[5.6/13.5] Excitation temperatureKphys.atmol.excitationfloatDelV[0.1/1.1] Line widthkm/sspect.line.widthfloatMLTE[0.03/1.8] LTE masssolMassphys.massfloatMVir[0.3/17.3] Virial masssolMassphys.massfloatalpha[0.7/18.7] Virial parameter (1)phys.mass;arith.ratiofloatSimbadSimbad column added by the CDSmeta.ref.urlchar_GlonPositions from MWISP names (longitude part)degpos.galactic.lon_GlatPositions from MWISP 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/ApJ/838/49/table3Infrared photometric magnitudes of YSO candidatesSeq[1/57] YSO index numbermeta.id;meta.maininte_22mag[0.02/0.5]? Uncertainty in 22mag (1)magstat.errorfloatnullableClassYSO classification (42 sources "II"; 15 sources "I")src.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latJmag[12.7/19]? 2MASS J (1.25um) band magnitude (1)magphot.mag;em.IR.Jfloatnullablee_Jmag[0.02/0.2]? Uncertainty in Jmag (1)magstat.error;phot.mag;em.IR.JfloatnullableHmag[11.6/16.2]? 2MASS H (1.65um) band magnitude (1)magphot.mag;em.IR.Hfloatnullablee_Hmag[0.02/0.3]? Uncertainty in Hmag (1)magstat.error;phot.mag;em.IR.HfloatnullableKsmag[10.5/15.2]? 2MASS Ks (2.16um) band magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag[0.02/0.2]? Uncertainty in Ksmagmagstat.error;phot.mag;em.IR.Kfloatnullable3.4mag[8.6/16] WISE W1 (3.4um) band magnitudemagphot.mag;em.IR.3-4umfloate_3.4mag[0.02/0.06] Uncertainty in 3.4magmagstat.errorfloat4.6mag[7.8/13] WISE W2 (4.6um) band magnitudemagphot.mag;em.IR.4-8umfloate_4.6mag[0.02/0.03] Uncertainty in 4.6magmagstat.errorfloat12mag[5/12.3] WISE W3 (12um) band magnitude (1)magphot.flux.density;em.IR.8-15umfloate_12mag[0.01/0.2]? Uncertainty in 12mag (1)magstat.errorfloatnullable22mag[2.4/9.3] WISE W4 (22um) band magnitude (1)magphot.flux.density;em.IR.15-30umfloat2MDisplay the 2MASS data (Cutri+ 2003, II/246) within 2"meta.ref.urlcharWISEDisplay the WISE data (Cutri+ 2012, II/311) within 2"meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_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