J/A+A/706/A242ivo://CDS.VizieR/J/A+A/706/A242CDSZheng S.Pan X.Urquhart J.S.Luo X.Huang Y.Jiang Z.Chen Z.,Zeng S.Zeng X.Zhang J.2026-03-02T06:25:50Z2026-02-13T08:29:21ZCDS support team

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

cds-question@unistra.frsurveysgalaxy-planesmilky-way-galaxymolecular-cloudsradio-astronomyco-line-emissionSince stars and star clusters emerge from the gravitational collapse of clumps and cores, studying molecular clumps is fundamental to understanding the processes of star formation. The FOREST Unbiased Galactic Plane Imaging (FUGIN) survey offers insights into the distribution of clumps and physical properties across different environments, aiding in studies of environmental effects, such as the location within the galaxy on star formation. This study aims to produce a catalog of clumps from the FUGIN survey to understand the complete mechanism of high-mass star formation in giant molecular clouds (GMCs). We use the catalog to analyze the physical properties of clumps in high-mass star-forming regions, enhancing our understanding of how different environments impact the star-formation process. Our process for the detection and verification of ^13^CO clumps in the FUGIN survey comprised two steps. First, the source extraction code FacetClumps was used to detect as many molecular clump candidates as possible from the FUGIN ^13^CO data. Second, a trained and validated semi-supervised deep learning model, SS-3D-Clump, was applied to verify these candidates, providing confidence levels for the clumps and filtering out false candidates to enhance the accuracy of the detection results. The resulting catalog containing 23150 clumps extracted from the ^13^CO (J=1-0) data covers the first quadrant (10<=l<=50{deg}, |b|<=1{deg}). By matching with CHIMPS and inheriting the distances of the matched CHIMPS clumps, we found that the sizes of the FUGIN clumps range from 0.1 to 3pc, demonstrating that the dense structures belong to the clump scale. The catalog achieves an 80% completeness level above 466K.km/s. The proposed two-step approach effectively integrates clump detection algorithms with semi-supervised deep learning, achieving an accuracy comparable to manual verification and thereby improving the extraction of clumps from large-scale survey data. The resulting clump catalog enables the analysis of the physical properties of clumps in high-mass star-forming regions, contributing to a better understanding of environmental influences on clump formation and the star formation process.2026A&A...706A.242Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/706/A242CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/706/A242https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/706/A242http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/706/A242https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/706/A242https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/706/A242http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/706/A242GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/706/A242/table1 (Catalog of FUGIN 13CO clumps)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/706/A242/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/706/A242/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/706/A242/table1?GETtext/xml+votable180.050000true275.37451-14.892380.0055555555555555565/7274-7275 7278 7376-7377 7382-7383 7554 7564 7578-7579 7604-7605 7648 7651 7654 7672-7673 6/29090-29091 29094-29095 29106 29116 29118-29119 29162-29163 29456-29457 29460-29461 29463 29517 29520 29522-29523 29526 30222-30223 30240-30241 30243-30245 30247 30260 30262-30263 30265 30268-30269 30306 30328 30330-30331 30404-30405 30428-30429 30598-30601 30620 30622-30623 30641 30644-30645 30666 30700-30701https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/706/A242?format=asciiRadiodefaultJ/A+A/706/A242/table1Catalog of FUGIN 13CO clumpsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDClump identifiermeta.id;meta.maincharGLONGalactic longitude of centroiddegpos.galactic.lonindexedGLATGalactic latitude of centroiddegpos.galactic.latindexedVelVelocity centroidkm/sphys.velocfloatsGLONRMS size along Galactic longitudearcsecphys.angSizesGLATRMS size along Galactic latitudearcsecphys.angSizefloatDeltaVRMS velocity dispersionkm/sphys.veloc.dispersionfloatthetaPosition angle of the clumpdegpos.posAngintTpeakPeak brightness temperatureKphys.temperature;stat.maxfloatWIntegrated intensity1000K.km/sphot.flux.densityfloatSNRPeak signal-to-noise ratiostat.snr;stat.maxfloatalphaConfidence from SS-3D-Clumpstat.fit.goodnessfloat_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.decindexed