J/AJ/165/106ivo://CDS.VizieR/J/AJ/165/106doi:10.26093/cds/vizier.51650106CDSWang C.Feng H.Yang JiChen X.Su Y.Yan Q.-Z.Du F.Ma Y.,Cai J.2023-11-03T12:05:29Z2023-06-29T13:26:03ZCDS support team

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

cds-question@unistra.frmolecular-cloudsradio-spectroscopyWe present results of cloud catalogs of 12CO, 13CO, and C18O (J=1-0) in a section of the third Galactic quadrant over (195{deg}<l<220{deg}, |b|<5{deg}) from the Milky Way Imaging Scroll Painting project. The data were acquired with the PMO 13.7m millimeter telescope with ~50" angular resolution. We construct three molecular cloud catalogs containing information of 12CO, 13CO, and C18O from the position-position-velocity (PPV) data cubes. The 12CO cloud catalog contains 7069 samples identified based on the DBSCAN algorithm. We develop a new algorithm, the stacking bump algorithm, for identifying 13CO and C18O emission by searching for weak signals in the original spectra of 13CO and C18O within the boundary in PPV space defined by the 12CO cloud. Above the 2{sigma} threshold level, we identified 1197 clouds having 13CO emission and 32 clouds having C18O emission. We test the stacking bump algorithm in the noise-only datacube and find that the 2{sigma} threshold can effectively avoid the possibility of false detection generated by noise. The results proved that the new algorithm has high accuracy and completeness. Statistics of peak intensity, projected angular area, line width, and flux of the clouds show that the power-law indices obtained from different isotopic lines are close to each other.2023AJ....165..106Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/165/106CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/20 : Catalogue of HII Regions (Sharpless 1959)VII/7 : Lynds' Catalogue of Dark Nebulae (LDN) (Lynds 1962)VIII/39 : Composite CO Survey of the Milky Way (Dame+ 1987)VIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)VII/284 : A Catalogue of Galactic Supernova Remnants (Green, 2019)J/ApJ/551/852 : FCRAO CO survey of the outer Galaxy (Heyer+, 2001)J/ApJ/723/492 : Physical properties GRS molecular clouds (Roman-Duval+, 2010)J/ApJS/212/1 : The WISE catalog of Galactic HII regions (Anderson+, 2014)J/A+A/588/A104 : Molecular clouds and star formation (Gong+, 2016)J/ApJ/818/95 : YSO candidates within 5' from the IR bubble N4 (Liu+, 2016)J/ApJ/910/131 : Molecular gas distribution from MWISP CO survey (Su+, 2021)J/ApJS/257/51 : Morphological classif. MWISP ^12^CO mol. clouds (Yuan+, 2021)J/AJ/163/266 : IGRINS & Gaia; star formation Monoceros OB1 & R1 (Lim+, 2022)J/ApJS/262/16 : Column density maps for MWISP ^13^CO mol. clouds (Ma+, 2022)J/ApJS/261/37 : ^13^CO emission in MWISP ^12^CO molecular clouds (Yuan+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/165/106https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/165/106http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/165/106https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/165/106https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/165/106http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/165/106GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/165/106/table1 (A catalog of all molecular clouds)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/165/106/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/165/106/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/165/106/table1?GETtext/xml+votable180.050000true91.3247114.241710.005555555555555556Cone search capability for table J/AJ/165/106/table2 (A catalog of molecular clouds which identified with ^13^CO emission)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/165/106/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/165/106/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/165/106/table2?GETtext/xml+votable180.050000true91.3093914.233440.005555555555555556Cone search capability for table J/AJ/165/106/table3 (A catalog of molecular clouds which identified with C^18^O emission)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/165/106/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/165/106/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/165/106/table3?GETtext/xml+votable180.050000true94.572715.447850.0055555555555555563/347 4/1377 1379 1382 1476-1477 1479 1490 5/5434 5505 5507 5520 5522 5532 5534 5540-5541 5543 5549 5551 5610 5913 5915 5937 5940-5941 5952 5954 5984-5985 6/21690-21691 21693-21695 22017 22019 22025 22053 22055 22061 22063 22092 22094-22095 22104 22106-22107 22134 22140 22142-22143 22168-22169 22171 22193 22408 22410 22434 23573 23575 23648-23649 23651 23657 23659 23756-23757 23768-23769 23772-23773 23812 23814 23820 23822-23823 23856 23858 23864 23866-23867 23952-23953https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/165/106?format=asciiMillimeterdefaultJ/AJ/165/106/table1A catalog of all molecular cloudsGLATGalactic latitude (1)degpos.galactic.latVLSRLocal Standard of Rest velocity (1)km/sphys.veloc;pos.lsrfloatAreaProjected angular cloud areaarcmin**2phys.angAreadoubledVAverage spectrum linewidth from 2nd momentkm/sspect.line.width;stat.meanfloatFluxFlux of ^12^CO (table1), ^13^CO (table2) or ^18^CO (table3) emission (K*km/s*arcmin^2^)phot.fluxdouble13CO_18COIndicates that data for 13CO and/ or 18CO is available (table2 and 3)meta.ref.urlchar_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.recordintIDCloud identifiermeta.id;meta.maincharprimaryGLONGalactic longitude (1)degpos.galactic.lonTPeakPeak intensityKspect.line.intensityfloatJ/AJ/165/106/table2A catalog of molecular clouds which identified with ^13^CO emission_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.recordintGLONGalactic longitude (1)degpos.galactic.lonGLATGalactic latitude (1)degpos.galactic.latTPeakPeak intensityKspect.line.intensityfloatIDCloud identifiermeta.id;meta.maincharVLSRLocal Standard of Rest velocity (1)km/sphys.veloc;pos.lsrfloatAreaProjected angular cloud areaarcmin**2phys.angAreadoubledVAverage spectrum linewidth from 2nd momentkm/sspect.line.width;stat.meanfloatFluxFlux of ^12^CO (table1), ^13^CO (table2) or ^18^CO (table3) emission (K*km/s*arcmin^2^)phot.fluxdouble_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.raindexedJ/AJ/165/106/table3A catalog of molecular clouds which identified with C^18^O emissionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCloud identifiermeta.id;meta.maincharGLONGalactic longitude (1)degpos.galactic.lon_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.decindexedGLATGalactic latitude (1)degpos.galactic.latVLSRLocal Standard of Rest velocity (1)km/sphys.veloc;pos.lsrfloatAreaProjected angular cloud areaarcmin**2phys.angAreadoubledVAverage spectrum linewidth from 2nd momentkm/sspect.line.width;stat.meanfloatTPeakPeak intensityKspect.line.intensityfloatFluxFlux of ^12^CO (table1), ^13^CO (table2) or ^18^CO (table3) emission (K*km/s*arcmin^2^)phot.fluxdouble