J/AJ/167/220ivo://CDS.VizieR/J/AJ/167/220doi:10.26093/cds/vizier.51670220CDSZhang S.Su Y.Chen X.Fang M.Yan Q.-Z.Zhang S.Sun Y.Wang X.,Feng H.Ma Y.Zhang M.Zhuang ZiZhou X.Chen Z.Yang Ji2024-11-06T20:20:05Z2024-08-23T08:03:00ZCDS support team

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

cds-question@unistra.frmillimeter-astronomysubmillimeter-astronomymolecular-cloudsinterstellar-mediumWe study the physical properties and 3D distribution of molecular clouds (MCs) toward the Cygnus region using the MWISP CO survey and Gaia DR3 data. Based on Gaussian decomposition and clustering for 13CO lines, over 70% of the fluxes are recovered. With the identification result of 13CO structures, two models are designed to measure the distances of the molecular gas in velocity crowding regions. The distances of more than 200 large 13CO structures are obtained toward the 150 deg^2^ region. Additionally, tens of the identified MC structures coincide well with masers and/or intense mid-IR emission. We find multiple gas layers toward the region: (1) the extensive gas structures composing the Cygnus Rift from 700pc to 1kpc across the whole region; (2) the ~1.3kpc gas layer mainly in the Cygnus X South region; and (3) the 1.5kpc dense filament at the Cygnus X North region and many cometary clouds shaped by Cygnus OB2. We also note that the spatial distribution of young stellar object candidates is generally consistent with the molecular gas structures. The total molecular mass of the Cygnus region is estimated to be ~2.7x106M{sun} assuming an X-factor ratio X_CO_=(2x10^20^cm^-2^Kkms^-1^)^-1^. The foreground Cygnus Rift contributes ~25% of the molecular mass in the whole region. Our work presents a new 3D view of the MCs' distribution toward the Cygnus X region, as well as the exact molecular gas mass distribution in the foreground Cygnus Rift.2024AJ....167..220Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/167/220CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/196 : Vilnius Photometry in two Nebulae (Straizys et al., 1993)VIII/39 : Composite CO Survey of the Milky Way (Dame+ 1987)J/AJ/101/1408 : Massive stars in Cyg OB2. (Massey+ 1991)J/A+A/241/551 : Radio continuum in Cygnus X region (Wendker+ 1991)J/A+A/476/1243 : Millimeter continuum mapping of Cygnus X (Motte+, 2007)J/ApJS/184/18 : Spitzer survey of young stellar clusters (Gutermuth+, 2009)J/ApJ/720/679 : Optical spectroscopy in Cygnus X region (Beerer+, 2010)J/A+A/554/A55 : C^18^O(1-0) and N_2_H^+^(1-0) in L1495/B213 (Hacar+, 2013)J/ApJS/212/1 : The WISE catalog of Galactic HII regions (Anderson+, 2014)J/AJ/147/46 : Properties of clumps in the NAN complex (Zhang+, 2014)J/MNRAS/449/741 : The massive star population of Cygnus OB2 (Wright+, 2015)J/A+A/601/A124 : Clouds in SEDIGISM science demonstr. field (Schuller+, 2017)J/A+A/610/A12 : Clustering the Orion B giant molecular cloud (Bron+, 2018)J/MNRAS/484/1838 : Spatial substructure of Cygnus OB2 (Berlanas+, 2019)J/MNRAS/483/4291 : Properties of JCMT CO(3-2) molecular clouds (Colombo+, 2019)J/ApJ/885/131 : ~200 high-mass SFR plx & proper motion VLBI (Reid+, 2019)J/ApJ/883/156 : Nobeyama 45m Cygnus-X CO. II. C180 clumps (Takekoshi+, 2019)J/A+A/641/A79 : FEDReD. Extinction map 2MASS and Gaia DR2 (Hottier+, 2020)J/A+A/633/A51 : Distances to molecular clouds in SFR (Zucker+, 2020)J/MNRAS/500/3027 : The SEDIGISM survey: molecular clouds (Duarte-Cabral+, 2021)J/A+A/645/A27 : Orion B in 18 molecular tracers maps (Gratier+, 2021)J/ApJS/254/3 : CO obs. of molecular clouds in the MW midplane (Ma+, 2021)J/A+A/655/A64 : Galactic CO maps (Mertsch+, 2021)J/MNRAS/502/6080 : New members of Cygnus OB2 from Gaia DR2 (Orellana+, 2021)J/MNRAS/508/2370 : Revisiting the Cygnus OB associations (Quintana+, 2021)J/ApJ/922/8 : Molecular cloud distances from CO & Gaia data (Yan+, 2021)J/A+A/665/A63 : DR20 integrated intensity maps (Beuther+, 2022)J/MNRAS/515/687 : Large-scale expansion of OB stars Cygnus (Quintana+, 2022)J/ApJS/261/37 : 13CO emission in MWISP 12CO molecular clouds (Yuan+, 2022)J/ApJS/271/25 : The first LHAASO catalog of gamma-ray sources (Cao+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/167/220https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/167/220http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/167/220https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/167/220https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/167/220http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/167/220GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/167/220/table1 (Parameters of 207 Molecular Clouds (MC) structures with distance measurement)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/167/220/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/167/220/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/167/220/table1?GETtext/xml+votable180.050000true300.996135.61390.0055555555555555560/https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/167/220?format=asciiMillimeterdefaultJ/AJ/167/220/table1Parameters of 207 Molecular Clouds (MC) structures with distance measurementMassXf[70/68310] Xfactor mass (5)solMassphys.massintalpha[0.6/31.7] Virial parameter of 13CO traced cloud; see Equ. 21stat.fit.paramfloatModelAdopted model that gave more accurate distancepos.distance;stat.param;meta.modelledchar_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.decindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/207] Cloud identifier in this workmeta.id;meta.mainintGLON[72/87] Galactic longitude; see Equ. 3 (1)degpos.galactic.lonGLAT[-5/4] Galactic latitude; see Equ. 4 (1)degpos.galactic.latvLSR[-30.4/15.1] Local Standard of Rest velocity ; see Equ. 8 (1)km/sphys.veloc;pos.lsrfloatsigmav[0.5/3.1] Intensity weighted velocity dispersion; see Equ. 9km/sphys.veloc.dispersionfloatRad[0.8/14.1] Physical size; see Equ. 17pcphys.size.radiusfloatdA[514/2478]? Model A median distancepcpos.distanceintnullableE_dA[4/115]? The 84% uncertainty in dA (2)pcstat.error;stat.maxintnullablee_dA[3/91]? The 16% uncertainty in dA (2)pcstat.errorintnullableSys-dA[25/123]? The 5% system uncertainty of Gaia data in dApcstat.error;pos.frameintnullabledB[535/2399]? Model B median distancepcpos.distanceintnullableE_dB[3/127]? The 84% uncertainty in dB (2)pcstat.error;stat.maxintnullablee_dB[5/117]? The 16% uncertainty in dB (2)pcstat.errorintnullableSys-dB[26/119]? The 5% system uncertainty of Gaia data in dBpcstat.error;pos.frameintnullableNmean[6.04e+20/1.27e+22] Mean column density (3)cm**-2phys.columnDensitydoubleMassLTE[40/49490] LTE mass (4)solMassphys.massint