J/A+A/689/A81ivo://CDS.VizieR/J/A+A/689/A81doi:10.26093/cds/vizier.36890081CDSKhan S.Rugel M.R.Brunthaler A.Menten K.M.Wyrowski F.Urquhart J.S.,Gong Y.Yang A.Y.Nguyen H.Dokara R.Dzib S.A.Medina X.S.-N.,Ortiz-Leon G.N.Pandian J.D.Beuther H.Veena V.S.Neupane S.,Cheema A.Reich W.Roy N.2024-11-21T20:03:01Z2024-09-04T08:01:02ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyh-ii-regionsradio-continuum-emissioninterferometryStudies of Galactic HII regions are of crucial importance for studying star formation and the evolution of the interstellar medium. Gaining an insight into their physical characteristics contributes to a more comprehensive understanding of these phenomena. The GLOSTAR project aims to provide a GLObal view on STAR formation in the Milky Way by performing an unbiased and sensitive survey. This is achieved by using the extremely wideband (4-8GHz) C-band receiver of the Karl G. Jansky Very Large Array and the Effelsberg 100m telescope. Using radio recombination lines observed in the GLOSTAR survey with the VLA in D-configuration with a typical line sensitivity of 1{sigma}~3.0mJy/beam at ~5km/s and an angular resolution of 25, we cataloged 244 individual Galactic HII regions (-2{deg}<=l<=60{deg} and |b|<=1{deg} and 76{deg}<=l<=83{deg} and -1{deg}<=b<=2{deg}) and derived their physical properties. We examined the mid-infrared (MIR) morphology of these HII regions and find that a significant portion of them exhibit a bubble-like morphology in the GLIMPSE 8{mu}m emission. We also searched for associations with the dust continuum and sources of methanol maser emission, other tracers of young stellar objects, and find that 48% and 14% of our HII regions, respectively, are coextensive with those. We measured the electron temperature for a large sample of HII regions within Galactocentric distances spanning from 1.6 to 13.1kpc and derived the Galactic electron temperature gradient as ~372+/-28K/kpc with an intercept of 4248+/-161K, which is consistent with previous studies.2024A&A...689A..81Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/689/A81CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/397/213 : Galactic HII regions (Paladini+, 2003)J/ApJ/653/1226 : Physical properties of galactic HII regions (Quireza+, 2006)J/ApJS/165/338 : Radio recombination lines in HII regions (Quireza+, 2006)J/ApJ/690/706 : Distances of Galactic HII regions (Anderson+, 2009)J/MNRAS/420/1656 : RMS compact HII regions distances (Urquhart+, 2012)J/ApJ/754/62 : HRDS III. HII region kinematic distances (Anderson+, 2012)J/A+A/627/A175 : GLOSTAR. Radio Source Catalogue I (Medina+, 2019)J/A+A/645/A110 : Hypercompact HII regions (Yang+, 2021)J/A+A/666/A59 : GLOSTAR GPS. 6.7GHz Methanol Maser Catalogue (Nguyen+, 2022)J/MNRAS/510/3389 : High-mass star formation evolutionary trendsJ/A+A/689/A81 : GLOSTAR GPS. Radio source catalog (Medina+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/689/A81https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/689/A81http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/689/A81https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/689/A81https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/689/A81http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/689/A81GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/689/A81/tablec1 (GLOSTAR HII region catalog with continuum and stacked hydrogen radio recombination lines (RRL) parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/689/A81/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/689/A81/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/689/A81/tablec1?GETtext/xml+votable180.050000true265.51931-30.068080.0055555555555555560/5.300855656246408e-24 5.300855656246408e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/689/A81?format=asciiRadiodefaultJ/A+A/689/A81/tablec1GLOSTAR HII region catalog with continuum and stacked hydrogen radio recombination lines (RRL) parameters_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.decindexedRGC? Galactocentric radiuskpcpos.distance;pos.galactocentricfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLONpeakGalactic longitude of the peak continuum emissiondegpos.galactic.lonGLATpeakGalactic latitude of the peak continuum emissiondegpos.galactic.latSpeakPeak continuum flux in 4-8GHz bandJy/beamphot.flux.density;em.radio.6-12GHz;stat.maxfloatScContinuum integrated flux in 4-8GHz bandmJyphot.flux.density;em.radio.6-12GHzdoublee_ScError in the continuum integrated fluxmJystat.errordoubleSLAmplitude of stacked radio recombination line (RRL)mJysrc.var.amplitude;phot.flux.density;em.radio.6-12GHzfloate_SLError in the amplitude of stacked radio recombination line (RRL)mJystat.errorfloatVlsrSource LSR velocity derived from the velocity of peak of stacked radio recombination line (RRL)km/sphys.veloc;pos.lsrfloate_VlsrError in the source LSR velocity derived from the velocity of peak of stacked radio recombination line (RRL)km/sstat.error;phys.veloc;pos.lsrfloatDsun? Distance of the source from the sunkpcpos.distancefloatnullablee_Dsun? Error in the distance of the source from the sunkpcstat.errorfloatnullableMorphTypeClassification of source morphology based on the Spitzer GLIMPSE 8um emission (see section 5.1) (2)src.classcharATLASGALName of the associated ATLASGAL dust clump (Urquhart et al., 2014A&A...568A..41U, Cat. J/A+A/568/A41) (see section 5.2)meta.idcharCH3OHName of the associated 6.7GHz class II methanol maser (Nguyen et al., 2022A&A...666A..59N, Cat. J/A+A/666/A59) (see section 5.3)meta.idcharNote[*] Candiate Hyper Compact HII region (G1)meta.notecharNameSource name GLLL.lll+B.bbbmeta.id;meta.maincharGLOSTARName of the corresponding GLOSTAR continuum source from GLOSTAR VLA-D continuum source catalog (1)meta.idchardeltaVLine width of stacked radio recombination line (RRL)km/sspect.line.widthfloate_deltaVError in the line width of stacked radio recombination line (RRL)km/sstat.errorfloatJ/A+A/689/A81/tablec2Physical properties of the GLOSTAR HII regionse_EM? Error in the emission measure towards the source100000pc.cm**-6stat.errorfloatnullableNe? Electron density of the source100cm**-3phys.density;phys.electronfloatnullablee_Ne? Error in the electron density of the source100cm**-3stat.errorfloatnullableNlyc? Lyman continuum photon rate of the source1e+48s**-1phot.count;em.X-rayfloatnullablee_Nlyc? Error in the Lyman continuum photon rate of the source1e+48s**-1stat.errorfloatnullableMassHII? Ionized gas mass of the sourcesolMassphys.massfloatnullablee_MassHII? Error in the ionized gas mass of the sourcesolMassstat.errorfloatnullableNoteCandiate Hyper Compact HII region (G1)meta.notecharNameSource name GLLL.lll+B.bbbmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintthetaEffective angular diameter of the sourcearcsecphys.angSizefloatdeff? Effective physical diameter of the sourcepcphys.size.diameterfloatnullableTeElectron temperature of the source1000Kphys.temperature.electron;phys.electronfloate_TeError in the electron temperature of the source1000Kstat.errorfloatEM? Emission measure towards the source100000pc.cm**-6phys.emissMeasurefloatnullable