J/MNRAS/492/1335ivo://CDS.VizieR/J/MNRAS/492/1335doi:10.26093/cds/vizier.74921335CDSPaulson S.T.Pandian J.D.2024-08-20T20:15:23Z2023-05-24T13:53:19ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomystar-forming-regionsmillimeter-astronomysubmillimeter-astronomyMethanol masers at 6.7GHz are the brightest of class II methanol masers and have been found exclusively towards massive star-forming regions. These masers can thus be used as a unique tool to probe the early phases of massive star formation. We present here a study of the spectral energy distributions of 320 6.7GHz methanol masers chosen from the Methanol Multibeam catalogue, which fall in the Hi-GAL range (|l|=<60{deg}, |b|=<1{deg}). The spectral energy distributions are constructed from 870 to 70{mu}m using data from the ATLASGAL and Hi-GAL surveys. The emission from cold dust is modelled by a single grey body component fit. We estimate the clump properties such as mass, far-infrared luminosity, and column density using the best-fitting parameters of the SED fits. Considering the Kauffman criteria for massive star formation, we find that all but a few maser hosts have the potential to harbour at least one high-mass star. The physical properties of the methanol maser hosts are also discussed. The evolutionary stages of 6.7GHz maser sources, explored using the mass luminosity diagram, suggest that they are predominantly associated with high-mass stars with the majority being in the accretion phase. However, we observe a small number of sources that could possibly be related to intermediate- or low-mass stars.2020MNRAS.492.1335Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/492/1335CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/431/1752 : ATLASGAL 6.7GHz methanol masers (Urquhart+, 2013)J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/492/1335https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/492/1335http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/492/1335https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/492/1335https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/492/1335http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/492/1335GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/492/1335/table1 (Flux densities of sources hosting 6.7GHz methanol masers from 870 to 70{mu}m)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/492/1335/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/492/1335/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/492/1335/table1?GETtext/xml+votable180.050000true256.34613-41.353170.0055555555555555565/7278 7383 7564 10542 10556 6/12974 14341 28808-28809 28811 28912 28918-28919 29091 29097 29100-29101 29103 29118-29119 29461 29463 29504-29505 29507-29508 29510-29511 29522 30218-30219 30222 30241 30244-30245 30262-30263 30268-30269 30313 30315 30318-30319 30330 30405 30416-30417 30419-30420 30422-30423 30594-30595 30601 30604-30605 30616-30617 30619 30622 30644 30694-30695 30715-30716 30718-30719 41653 41677-41678 41681 41759 41767 41777 41780 41799 41812 41815 41817 41820 42159 42172-42173 42175 42207 42211 42213-42215 42217 42228-42230 42378-42379 42382 42390-42391 42397 42440-42441 42444-42445 42450-42451 42454 42456-42457 42460-42461 42497 42500-42501 425122.283270615984385e-22 1.2415266230347566e-21https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/492/1335?format=asciiMillimeterRadiodefaultJ/MNRAS/492/1335/table1Flux densities of sources hosting 6.7GHz methanol masers from 870 to 70{mu}mrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinte_S500Error on S500Jystat.errorfloat_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.decindexede_S160Error on S160Jystat.errorfloat_GlonPosition, derived from the ATLASGAL name (longitude part)degpos.galactic.lon_GlatPosition, derived from the ATLASGAL name (latitude part)degpos.galactic.latNameSource name (GLLL.lll+B.bbb)meta.id;meta.maincharS870Flux density at 870umJyphot.flux.density;em.mm.200-400GHzfloate_S870Error on S870Jystat.errorfloatS500Flux density at 500umJyphot.flux.density;em.mm.400-750GHzfloatS350Flux density at 350umJyphot.flux.density;em.mm.750-1500GHzfloate_S350Error on S350Jystat.errorfloatS250Flux density at 250umJyphot.flux.density;em.mm.750-1500GHzfloate_S250Error on S250Jystat.errorfloatS160Flux density at 160umJyphot.flux.density;em.mm.1500-3000GHzfloatJ/MNRAS/492/1335/table2The best-fitting parameters of characteristic sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (GLLL.lll+B.bbb)meta.id;meta.maincharDistDistancekpcpos.distancefloatTcTemperature of the cold dust componentKphys.temperaturefloatOmegacSolid angle of cold dust as seen in aperture photometrysrphys.angSizedoubletauOptical depth of dust at 500umphys.absorption.opticalDepthfloatbetaDust spectral indexspect.indexfloatJ/MNRAS/492/1335/table3The physical properties derived from best-fitting parameters of characteristic sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (GLLL.lll+B.bbb)meta.id;meta.maincharMassClump masssolMassphys.massdoubleNH2Hydrogen column densitycm**-2phys.columnDensitydoubleRad? Effective radius (1)pcphys.size.radiusfloatnullableSigma? Surface density (1)g.cm**-2phot.flux.density.sbfloatnullableLFIRFIR luminositysolLumphys.luminosity;em.IRdouble