All-sky cat. of molecular clouds from 3D dust map J/ApJS/280/16 ivo://CDS.VizieR/J/ApJS/280/16 CDS Wang T. Yuan H. Chen B. Li G. Huang B. Guo H. Zhang R. 2026-06-22T07:27:10Z 2026-06-22T08:25:27Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr molecular-clouds interstellar-medium milky-way-galaxy visible-astronomy extinction Understanding the distribution and properties of molecular clouds is crucial for tracing the structure and evolution of the interstellar medium (ISM) and the large-scale morphology of the Milky Way. Here we present an all-sky catalog of 3345 molecular clouds identified from our previous three-dimensional dust-reddening map using a dendrogram-based clustering method with distance-adaptive parameters. The catalog spans heliocentric distances from 90pc to 4.3kpc and includes key physical properties for each cloud, including position, size, mass, surface density, and dust density. Approximately 650 clouds in our catalog are associated with the boundary of the Local Bubble, while around 740 clouds (excluding those associated with the Local Bubble) are located at high Galactic latitudes (|b|>20). The spatial distribution of the cataloged clouds reveals prominent large-scale features in the Galactic disk, including coherent spur-like structures, large-scale cavities, and a more detailed view of the Local Bubble shell. These findings refine our understanding of how molecular clouds trace the Galactic spiral arm network and provide new insight into the spatial structure of the Local Bubble. The catalog serves as a valuable resource for future studies of star formation, Galactic structure, and the interaction between molecular clouds and large-scale ISM features. 2025ApJS..280...16W https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/280/16 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/337 : Gaia DR1 (Gaia Collaboration, 2016) I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022) J/A+A/327/325 : Distances of molecular cloud (May+, 1997) J/A+A/411/447 : Interstellar NaI D-line (Lallement+, 2003) J/A+A/591/A5 : ATLASGAL dense filamentary structures (Li+, 2016) J/ApJ/834/57 : MW molecular clouds from ^12^CO (Miville-Deschenes+, 2017) J/MNRAS/487/1400 : Spiral structure as revealed by O and B stars (Chen+, 2019) J/ApJ/885/131 : High-mass SFR plx & proper motion with VLBI (Reid+, 2019) J/MNRAS/493/351 : A large catalogue of molecular clouds (Chen+, 2020) J/MNRAS/511/2302 : Molecular clouds study from 3D extinction maps (Guo+, 2022) J/A+A/664/A174 : Gal. interstellar dust Gaia-2MASS 3D maps (Vergely+, 2022) J/AJ/168/203 : Dust clouds masses, color excesses & distances (Sun+, 2024) J/ApJS/280/15 : Extinction catalog from Gaia DR3 & LAMOST DR11 (Wang+, 2025) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/280/16 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/280/16 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/280/16 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/280/16 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/280/16 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/280/16 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJS/280/16/table2 (Catalog of molecular clouds) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/280/16/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/280/16/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/280/16/table2? 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44280 44324 44336 44339-44341 44372 44377 44399 44409 44423 44455 44509 44597 44608 44613 44616 44644 44646 44661-44662 44666 44669-44670 44683 44703 44710 44749 44794 44811 44829 44855 44861 44869 44906 44942 44960 44979 44995 45013 45023 45033 45080 45110 45122 45129 45138 45150 45157 45189 45191 45236 45321 45471 45580 45611 45666 45685 45697 45705 45763 45806 45869 45883 45921 45923 46483 46616 46632 46722 46826 46965 47091 47120 47140 47159 47195 47197 47229 47264 47299 47308 47320 47332 47345 47353 47359 47429 47503 47520 47563 47579 47607 47615 47696 47739 47746 47759 47844 47904 47906 47944 47956 47981 47985 47990 47994 47998 48079 48085 48094 48105 48156 48179 48187 48202 48204 48218 48226 48243 48278 48280 48289 48320 48333 48340 48344 48364 48379 48411 48419 48432 48460 48464 48532 48574 48585 48592 48600 48608-48609 48616 48620-48621 48628 48636 48640 48684 48721 48727 48758 48760 48770 48777 48783 48788 48793 48795 48812 48820 48828-48829 48897 48907 48915 48973 48981 49001 49017 49020 49046 49082 49105-49106 49126 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/280/16?format=ascii Optical default J/ApJS/280/16/table2 Catalog of molecular clouds recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Seq [1/3345] Sequential identifier meta.id;meta.main int GLON Galactic longitude deg pos.galactic.lon GLAT [-87.12/87.2] Galactic latitude deg pos.galactic.lat Dist [0.09/4.3] Distance kpc pos.distance float Rad [1.65/148.11] Projected radius pc phys.size.radius float Area [0.2/86.58] Angular area deg**2 phys.angArea float Mass [4.11/629000.0] Total mass solMass phys.mass double Sigma [0.28/41.98] Surface density solMass.pc**-2 phys.density float rho [0.09/11.99] Average dust column density mag.kpc**-1 phys.columnDensity float Flag [0/1] Local Bubble Flag (1) meta.code.error int _RA.icrs Right 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) deg pos.eq.ra indexed _DE.icrs Declination (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) deg pos.eq.dec indexed