J/MNRAS/511/2302ivo://CDS.VizieR/J/MNRAS/511/2302doi:10.26093/cds/vizier.75112302CDSGuo H.-L.Chen B.-Q.Liu X.-W.2025-03-07T20:14:18Z2025-02-17T14:25:14ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyinterstellar-mediumstar-forming-regionsmolecular-cloudsphotometryvisible-astronomyinfrared-astronomyastrometryextinctionWe present a large catalogue of molecular clouds with accurate distance estimates in the Southern sky. Based on the three-dimensional dust extinction map and the best-fitting extinction and distance information of over 17 million stars presented in Guo et al. (2021ApJ...906...47G), we have identified 250 dust/molecular clouds in the Southern sky using a hierarchical structure identification algorithm. Amongst these are 71 clouds located at high Galactic latitudes (b < -10{deg}). We have estimated the distances to the clouds by fitting the extinction versus distance profiles of the lines of sight overlapping with the clouds, using a simple Gaussian dust distribution model. The typical uncertainties of the distances are less than 7 per cent. We also provide the physical properties of the individual clouds, including the linear radius, mass and surface mass density.2022MNRAS.511.2302Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/511/2302CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/591/A5 : ATLASGAL dense filamentary structures (Li+, 2016)VII/244 : Atlas and Catalog of Dark Clouds (Dobashi+, 2005)J/ApJ/834/57 : Milky Way molecular clouds from ^12^COII/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)J/ApJ/786/29 : Catalog of distances to molecular clouds (Schlafly+, 2014)VII/233 : 2MASS All-Sky Extended Source Catalog (XSC)J/ApJ/706/727 : Distance and mass of Infrared Dark Clouds (Marshall+, 2009)J/PASJ/63/S1 : Atlas and catalog of dark clouds based on 2MASSJ/A+A/633/A51 : Distances to molecular clouds in SFR (Zucker+, 2020)II/358 : SkyMapper Southern Sky Survey. DR1.1 (Wolf+, 2018)II/379 : SkyMapper Southern Sky Survey. DR4 (Onken+, 2024)I/345 : Gaia DR2 (Gaia Collaboration, 2018)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/347 : Distances to 1.33 billion stars in Gaia DR2J/MNRAS/493/351 : A large catalogue of molecular clouds (Chen+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/511/2302https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/511/2302http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/511/2302https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/511/2302https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/511/2302http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/511/2302GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/511/2302/table1 (Physical properties of our molecular clouds sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/511/2302/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/511/2302/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/511/2302/table1?GETtext/xml+votable180.050000true331.2776-2.30630.0055555555555555566/19017 20805 20807 20821 20826 20843 20944 21261 21311 21325 21337 21351 21367 21403 21406 21437 21445 21458 21477 21480 21486 21505 21510 21560 21639 21642 21646-21647 21667 21678 22034 22075 22077 22160 22176 22553 22623 22651 22808 22856 22864 23144 28952 28976 29149 29216 29222 29241-29242 29244 29290 29314 29316 29322 29327 29354 29359 29362 29406 29418 29420 29426 29436 29485 29487 29574 29578 29582 29602 29604 29610 29679 29688 29836 29905 29925 29935 29998 30086 30273 30296 30370 30741 30808 30815 30979 30989 31004 31006 31025 31030 31040 31058 32854 32893 33100 36876 36945 36956 36963 36978 36981 36999 37052 37124 37196 37207 37230 37232 37241 37330 37360 37429 37636 37711 37733 37775 37793 37811 37815 37832 37911 37935 37970 37987 38030 38032-38033 38052 38228 38286 38404 38424 38432 38438 38441 38529 38540 38550 39129 39171 39174 39184 39190 39220 39228 39242 39285 39336 39339 39346 39388 39549 39644 39709 39711 39762 39771 39783 39876 39908-39909 39916-39917 39926 39937 40177 40535 40611 40998 41014 41042 41092 41099 41124 41134 41219 41448 41494 41507 41515 41527 41541 41620-41621 41716 41723 41731 41744 41851 41869 41877 41894 41904 41923 41925 42084 42183 42507 42598 42609 42628 42689 42718 42727 42744 42785 42796 42802 42824 42828 42909 42937 42953 42962 42967 42974 42976 42998 43036 43081 43086 43116 43136 43141 43143 43157 44055 44097 45101 45121 45153 45189 45208 45570 47735 47743 47825 47894 47905-47906 47952 48828 48876 48995https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/511/2302?format=asciiOpticalInfrareddefaultJ/MNRAS/511/2302/table1Physical properties of our molecular clouds samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentifier number (ID)meta.id;meta.mainintGLONGalactic longitude (l)degpos.galactic.lonGLATGalactic latitude (b)degpos.galactic.latDEstimated distance with method as explained in the section 3.2 Distance measurement (d0)pcpos.distanceinte_DMean uncertainty of D (err_d0)pcstat.errorfloatMMass of the identified molecular cloud computed with the equation 7 of the section 3.3 Physical parameters (M)solMassphys.massdoubleSEstimated cloud surface area computed with the equation 5 of the section 3.3 Physical parameters (S)pc**2phys.areadouble_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.decindexedrLinear cloud radius computed with the equation 6 of the section 3.3 Physical parameters (r)pcphys.size.radiusfloatSigmaSurface density computed with M/S from the section 3.3 Physical parameters ({Sigma})solMass.pc**-2phot.flux.density.sbfloatOmegaSolid angle computed with the equation 4 of the section 3.3 Physical parameters ({Omega})deg**2phys.angSizefloatDeltaArTotal r-band extinction contributed by the dust in the cloud taken from the distance measurements analysis of the section 3.2 ({delta}A_r_)magphys.absorption;em.optfloatDeltadThe width of the extinction jump produced by the dust in the cloud taken from the distance measurements analysis of the section 3.2 ({delta}d)pcsrc.morph.scLengthdouble