J/ApJ/938/44ivo://CDS.VizieR/J/ApJ/938/44doi:10.26093/cds/vizier.19380044CDSGuo W.Chen X.Feng J.Sun LiZhang S.Wang C.Su Y.Sun Y.,Yan Q.Zhang S.Zhou X.Zhang M.Fang M.Yang Ji2025-07-16T20:12:53Z2024-09-24T09:22:19ZCDS support team

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

cds-question@unistra.frco-line-emissionsurveysmilky-way-galaxyyoung-stellar-objectsinterstellar-mediuminfrared-photometryvisible-astronomyWe present observations of the J=1-0 transition lines of ^12^CO, ^13^CO, and C^18^O toward the Galactic region of 153.60{deg}<=l<=156.50{deg} and 1.85{deg}<=b<=3.50{deg}, using the Purple Mountain Observatory 13.7m millimeter telescope. Based on the ^13^CO data, one main filament and five subfilaments are found together as a network structure in the velocity interval of [-42.5,-30.0]km/s. The kinematic distance of this molecular cloud is estimated to be ~4.5kpc. The median length, width, excitation temperature, and line mass of these filaments are ~49pc, ~2.9pc, ~8.9K, and ~39M_{sun}_/pc, respectively. The velocity structures along these filaments exhibit oscillatory patterns, which are likely caused by the fragmentation or accretion process along these filaments. The maximum accretion rate is estimated to be ~700M_{sun}_/pc. A total of ~162 ^13^CO clumps and ~103 young stellar objects are identified in this region. Most of the clumps are in gravitationally bound states. Three HII regions (G154.359+2.606, SH2-211, and SH2-212) are found to be located in the apexes of the filaments. Intense star-forming activity is found along the entire filamentary cloud. The observed results may help us to better understand the link between filaments and massive star formation.2022ApJ...938...44Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/938/44CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/58 : A Survey of Radio H II Regions in the Northern Sky (Lockman+ 1989)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/328 : AllWISE Data Release (Cutri+ 2013)I/345 : Gaia DR2 (Gaia Collaboration, 2018)II/360 : Gaia DR2 x AllWISE catalogue (Marton+, 2019)J/ApJS/141/157 : CO (J=1-0) data of cold IRAS sources (Yang+, 2002)J/ApJS/161/361 : Millimeter continuum survey for protoclusters (Klein+, 2005)J/PASJ/59/1185 : Water maser in galactic IRAS sources (Sunada+, 2007)J/AJ/136/2391 : GLIMPSE Extended Green Objects catalog (Cyganowski+, 2008)J/A+A/482/585 : JHK photometry of stars in Sh 2-212 (Deharveng+, 2008)J/ApJS/179/249 : Low-luminosity embedded protostar population (Dunham+, 2008)J/A+A/487/993 : MAMBO Mapping of c2d Clouds and Cores (Kauffmann+, 2008)J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)J/ApJ/699/1092 : Giant molecular clouds (SRBY) (Heyer+, 2009)J/ApJ/698/324 : Spitzer IRDCs (Ragan+, 2009)J/ApJ/738/27 : Galactic HII regions RRL and continuum data (Balser+, 2011)J/MNRAS/411/2530 : UBVRIJHK photometry in NGC1624 (Jose+, 2011)J/AJ/144/31 : Spitzer+2MASS phot. of protostar cand. (Kryukova+, 2012)J/A+A/554/A55 : C^18^O(1-0) and N_2_H^+^(1-0) in L1495/B213 (Hacar+, 2013)J/ApJS/208/11 : Red MSX Source Survey: massive protostars (Lumsden+, 2013)J/MNRAS/431/1752 : ATLASGAL 6.7GHz methanol masers (Urquhart+, 2013)J/MNRAS/443/1555 : ATLASGAL massive star forming clumps (Urquhart+, 2014)J/ApJS/221/26 : Radio obs. of Galactic WISE HII regions (Anderson+, 2015)J/ApJS/220/11 : SEDs of Spitzer YSOs in the Gould Belt (Dunham+, 2015)J/ApJ/805/157 : BGPS. XIII. Mass functions (Ellsworth-Bowers+, 2015)J/AJ/150/147 : Galactic HII regions. I. Stellar distances (Foster+, 2015)J/ApJ/806/231 : MISFITS survey: HCO+ obs. of Spitzer YSOs (Heiderman+, 2015)J/A+A/584/A91 : Cat. of dense cores in Aquila from Herschel (Konyves+, 2015)J/AJ/149/127 : The SOS project. IV. NGC 1624 and NGC 1931 (Lim+, 2015)J/ApJS/218/1 : BGPS. XI. SHARC-II 350um observations (Merello+, 2015)J/ApJ/798/L27 : CO obs. of molecular clouds in the 2nd quadrant (Sun+, 2015)J/ApJS/224/7 : CO obs. of the outer arm in the 2nd quadrant (Du+, 2016)J/A+A/588/A104 : Molecular clouds and star formation (Gong+, 2016)J/MNRAS/458/3479 : SVM selection of WISE YSO Candidates (Marton+, 2016)J/A+A/606/A100 : YSOs in California Molecular Cloud (Lada+, 2017)J/ApJ/838/49 : CO large-field observations around l=150{deg} (Xiong , 2017)J/A+A/610/A77 : Orion Integral Filament ALMA+IRAM30m N2H+ (Hacar+, 2018)J/A+A/619/A166 : SEDIGISM, kinematics of ATLASGAL filaments (Mattern+, 2018)J/MNRAS/477/2220 : Larson relations in massive clumps (Traficante+, 2018)J/ApJ/885/131 : High-mass SFR plx & proper motion with VLBI (Reid+, 2019)J/A+A/633/A99 : Gaia DR2 open clusters in the MW. II (Cantat-Gaudin+, 2020)J/A+A/655/L2 : OGHReS 12CO(2-1) data cubes (Colombo+, 2021)J/ApJ/921/23 : C^18^O dense cores identified in the CMC region (Guo+, 2021)J/ApJS/257/51 : Morph. classif. of MWISP ^12^CO mol. clouds (Yuan+, 2021)J/A+A/657/A1 : Maggie filament datacubes (Syed+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/938/44https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/938/44http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/938/44https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/938/44https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/938/44http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/938/44GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/938/44/table6 (Properties of the identified dense clumps; section 3.5)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/938/44/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/938/44/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/938/44/table6?GETtext/xml+votable180.050000true69.0773651.207020.005555555555555556Cone search capability for table J/ApJ/938/44/table7 (IR photometric magnitudes of candidate YSOs; section 3.6)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/938/44/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/938/44/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/938/44/table7?GETtext/xml+votable180.050000true68.22012551.1966170.0055555555555555566/1831 1837 1839 1842 1848 1850 1925 19368.157980699529898e-21 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/938/44?format=asciiOpticalInfraredRadiodefaultJ/ApJ/938/44/table6Properties of the identified dense clumps; section 3.5amaj[0.97/4.8] Angular major axis size, {Theta}_maj_arcminphys.angSize;phys.size.diameterfloatbmin[0.97/4.5] Angular minor axis size, {Theta}_min_arcminphys.angSizefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPA[-40.6/175.5] Position angledegpos.posAngfloatVlsr[-40.9/-31] LSR velocity, {nu}km/sphys.veloc;pos.lsrfloatTpk[1.2/7.4] Peak temperatureKphys.temperature;stat.maxfloatSeqRunning sequence number (C1 to C162)meta.idcharMWISPClump identifier (GLLL.lll+B.bbb)meta.id;meta.maincharDelV[0.3/2.2] Spectral FWHM, {Delta}Vkm/sspect.line.widthfloatReff[0.28/2] Effective radius after beam deconvolution (1)pcphys.size.radiusfloatTex[4.6/22.8] Excitation temperatureKphys.temperature;phys.atmol.excitationfloattau[0.12/3.4] Optical depth, {tau}phys.absorption.opticalDepthfloatNH2[0.19/12.1] Hydrogen column density, N_H2_1e+21cm**-2phys.columnDensity;phys.abund.XfloatSigc[8.8/656.4] Surface density, {Sigma}_c_solMass.pc**-2phot.flux.density.sbfloatnH2[0.07/6.6] Volume density, n_H2_1000cm**-3phys.volume;phys.densityfloatMlte[15/2416] LTE masssolMassphys.massintMvir[8/817] Virial masssolMassphys.massintaVir[0.3/3] Virial parameter ({alpha}_vir_=M_vir_/M_LTE_)phys.mass;arith.ratiofloat_GlonPostions from MWISP names (longitude part)degpos.galactic.lon_GlatPostions 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.raindexed_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.decindexedJ/ApJ/938/44/table7IR photometric magnitudes of candidate YSOs; section 3.6Dist[3.2/5.7]? Distancepcpos.distancefloatnullable_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.raindexed_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.decindexedplx[0.17/0.32]? Gaia DR2 parallaxmaspos.parallaxfloatnullableM16Display data from Marton+ 2016, J/MNRAS/458/3479meta.ref.urlintnullableM19Display data from Marton+ 2019, II/360 within 3" if Gaia DR2 is givenmeta.ref.urlchar2MDisplay the 2MASS data (II/246) within 3" if Jmag is givenmeta.ref.urlcharWISEAAllWISE identifier (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharClassYSO classification (1)meta.code.class;src.classchare_W4mag[0.001/0.6]? Uncertainty on the W4magmagstat.error;phot.mag;em.IR.15-30umfloatnullablee_Jmag[0.02/0.3]? Uncertainty on the Jmagmagstat.error;phot.mag;em.IR.JfloatnullableHmag[10.2/16.6]? 2MASS H-band (1.65um) magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag[0.028/0.3]? Uncertainty on the Hmagmagstat.error;phot.mag;em.IR.HfloatnullableKsmag[10.05/16.03]? 2MASS Ks-band (2.16um) magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag[0.02/0.3]? Uncertainty on the Ksmagmagstat.error;phot.mag;em.IR.KfloatnullableGaia? Gaia DR2 identifiermeta.id.crossnullablealpha[-1.6/2.6] Spectral index {alpha}spect.indexfloatJmag[10.38/18.6]? 2MASS J-band (1.25um) magnitudemagphot.mag;em.IR.JfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLON[153.6/156.4] Galactic longitudedegpos.galactic.lon;meta.mainGLAT[1.8/3.3] Galactic latitudedegpos.galactic.lat;meta.mainW1mag[7.86/15.84] WISE W1 (3.4um) band magnitudemagphot.mag;em.IR.3-4umfloate_W1mag[0.014/0.08] Uncertainty on the W1magmagstat.error;phot.mag;em.IR.3-4umfloatW2mag[6.64/16.5] WISE W2 (4.6um) band magnitudemagphot.mag;em.IR.4-8umfloate_W2mag[0.01/0.2]? Uncertainty on the W2magmagstat.error;phot.mag;em.IR.4-8umfloatnullableW3mag[0.46/12.66] WISE W3 (12um) band magnitudemagphot.mag;em.IR.8-15umfloate_W3mag[0.01/0.6]? Uncertainty on the W3magmagstat.error;phot.mag;em.IR.8-15umfloatnullableW4mag[-2.97/9.05] WISE W4 (22um) band magnitudemagphot.mag;em.IR.15-30umfloat