J/MNRAS/493/351ivo://CDS.VizieR/J/MNRAS/493/351doi:10.26093/cds/vizier.74930351CDSChen B.-Q.Li G.-X.Yuan H.-B.Huang Y.Tian Z.-J.Wang H.-F.,Zhang H.-W.Wang C.Liu X.-W.2024-08-20T20:16:38Z2023-06-21T14:50:51ZCDS support team

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

cds-question@unistra.frmolecular-cloudsinterstellar-mediummilky-way-galaxyextinctionvisible-astronomyinfrared-astronomyWe present a large, homogeneous catalogue of molecular clouds within 4kpc from the Sun at low Galactic latitudes (|b|<10{deg}) with unprecedented accurate distance determinations. Based on the 3D dust reddening map and estimates of colour excesses and distances of over 32 million stars presented in Chen et al. (2019MNRAS.483.4277C), we have identified 567 dust/molecular clouds with a hierarchical structure identification method and obtained their distance estimates by a dust model fitting algorithm. The typical distance uncertainty is less than 5 per cent. As far as we know, this is the first large catalogue of molecular clouds in the Galactic plane with distances derived in a direct manner. The clouds are seen to lie along the Sagittarius, Local and Perseus Arms. In addition to the known structures, we propose the existence of a possible spur, with a pitch angle of about 34{deg}, connecting the Local and the Sagittarius Arms in the fourth quadrant. We have also derived the physical properties of those molecular clouds. The distribution of cloud properties in different parameter spaces agrees grossly with the previous results. Our cloud sample is an ideal starting point to study the concentration of dust and gas in the solar vicinity and their star formation activities.2020MNRAS.493..351Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/493/351CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/493/351https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/493/351http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/493/351https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/493/351https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/493/351http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/493/351GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/493/351/table1 (Catalogue of molecular clouds)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/493/351/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/493/351/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/493/351/table1?GETtext/xml+votable180.050000true76.0261125.46050.0055555555555555566/1092 1104 1133 1236 1247 1266 1295 1303 1322 1327 1332 1382 1409 1462 1488 1505 1605 1615 1625 1755 1799 1824 1826-1828 1833 1846 1936 1942 1959 1964 1968 1986 2018 2972 3005 3011 3039 3044 3052 3155 3165 3180 3190 3195 3198 3269 3291-3292 3298 3303 3306 3335 3349 3363 3380 3465 3473 3480 3497 3606 3630 3638 3649 3655 3670 3672 3692 3701 3735-3736 3742 3749 3756 3766 3813 3848 3851 12985 13005 13032 13036 13051 13235 13305 13887 13945 13976 13980-13981 14003 14052 14055 14057 14075 14079 14147 14166 14205 14237 14269 14290 14293 14307 14314 14329 14338 14342 14347 14351 14353 14358 14401-14402 14410 14428 14453 14594 14599 14603 14614 14632 14637 14671 14678 14682 14685 14688 14696-14697 14701 14705 14717 14734 14739 14749 14809 15361 15372 15376 15380 15389-15390 15401 15403 15414 15416 15427 15435 15449 15453 15464 15473 15482 15491 15519 15553 15561 15578 15585 15627-15629 15634 15636 15641 15645 15656 15665 15668 15681 15703-15704 15707 15716 15722 15752 15758 15770 15828 20807 20826 20830 20935 21329 21336-21337 21340 21367 21463 21507 21560 21626 21639 21646-21647 21664 21670 21675 21682 21690 22044 22069 22138 22143 22162 22177 22193 22232 22240 22274 23568 23576 23591 23600 23626 23637 23639 23647 23670 23697 23703 23764 23769 23775 23784 23795 23799 23807 23936 23969-23970 23974 23983 23995 24130 24156 24171 24189 24263 24269 24284 24300 24307 24309 24342 24367 24378 24419 24440 24462 24474 24498 24500 24513 24549 24572 28732-28733 28803 28806-28807 28809 28824 28849-28850 28859 28863 28875 28877 28888 28892 28916 28919 28961 28971 28977 29080 29084 29090-29091 29093 29095 29098 29101-29102 29112 29116 29119 29154 29171 29176 29189-29190 29210 29212 29215 29235 29244 29256 29263 29267 29284 29310 29441 29445 29449 29466 29469 29492 29508 29523 29528 29549 29551 29555 29563 29586 29588 29596 29634 29653 29659 29663 29856 29927 30219 30235 30237 30262 30274 30288 30303 30314 30317 30329 30337 30342 30361 30402 30406 30418 30453 30489 30507-30508 30539 30571 30573 30591 30594 30606 30608 30613 30615 30623 30645 30651 30654 30692 30699 32037 32092 32121 37196 37213 37236 37239 37311 37316 37330 37363 37373 37711 37718 37725 37748 37786 37811 37828 37831-37832 37839 37845 37849 37855 37857 37859 37866 37872-37873 37881 37887 37899 37901-37902 37921 37926 37935 37938 37954 37970 37987 38018-38019 38049 38059 38083 38112 38402 38406 38411 38424 38444 38447 38528 38540 38556 38574 39174 39184 39188 39220-39221 39228 39235 39239 39243 39259 39266 39273 39275 39283 39324 39327 39339 39344 39351 39369 39386 39401 39419 39749 39752 39769 39877 39908-39909 39916 39921 39928 39930 39938 39940 40584 41471 41501 41515 41532 41549 41622 41624 41645 41651 41657 41662 41677 41684 41694 41703 41723 41730 41735 41765 41783 41785 41788 41802 41804 41811 41851 41866 41868 41879 41891-41892 41904 41925 42126 42167 42175 42190 42196 42213 42216 42228 42233 42277 42311 42346 42364 42370 42381 42385 42387 42394 42398 42402 42409 42419-42420 42434 42438 42454 42459 42463 42466 42469 42477 42483 42485 42497 42504-42505 42516 42520-42521 42562 42564 42566 42582 42590 42598 42614-42616 42629 42754 42758 42765 42769 42775 42777 42785-42786 42791 42803 42828 42832 42839 43010-43011 43013 43024 43028 43046 43074 43079 43086 43116 43138 43143 43156 47786https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/493/351?format=asciiOpticalInfrareddefaultJ/MNRAS/493/351/table1Catalogue of molecular clouds_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[1/567] Internal object identifiermeta.id;meta.mainintGLON[] Galactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latOmegaSolid angle (1)deg**2phys.angSizefloatrLinear radius of the molecular cloud (2)pcphys.size.radiusfloatd0Distance to the cloudpcpos.distancefloate_d0Error on d0pcstat.errorfloatdeltadWidth (depth) of the molecular cloudpcsrc.morph.scLengthfloate_deltadError on deltadpcstat.errorfloatE(BP-RP)Average colour excess E(BP-RP) of the cloudmagphot.color.excessfloatMMass of the cloud (3)solMassphys.massdoubleSigmaSurface mass density of the cloud (4)solMass.pc**-2phot.flux.density.sbfloat