J/A+A/615/A103ivo://CDS.VizieR/J/A+A/615/A103doi:10.26093/cds/vizier.36150103CDSKalcheva I.E.Hoare M.G.Urquhart J.S.Kurtz S.Lumsden S.L.,Purcell C.R.Zijlstra A.A.2022-06-23T08:00:58Z2018-07-20T13:10:13ZCDS support team

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

cds-question@unistra.frh-ii-regionssurveysradio-continuum-emissionradio-sourcesinfrared-photometryA catalogue of 239 ultra-compact HII regions (UCHIIs) found in the CORNISH survey at 5GHz and 1.5-arcsec resolution in the region 10{deg}<l<65{deg}, |b|<1{deg} is presented. This is the largest complete and well-selected sample of UCHIIs to date and provides the opportunity to explore the global and individual properties of this key state in massive star formation at multiple wavelengths. The nature of the candidates was validated, based on observational properties and calculated spectral indices, and the analysis is presented in this work. The physical sizes, luminosities and other physical properties were computed by utilising literature distances or calculating the distances whenever a value was not available. The near- and mid-infrared extended source fluxes were measured and the extinctions towards the UCHIIs were computed. The new results were combined with available data at longer wavelengths and the spectral energy distributions (SEDs) were reconstructed for 177 UCHIIs. The bolometric luminosities obtained from SED fitting are presented. By comparing the radio flux densities to previous observational epochs, we find about 5% of the sources appear to be time variable. This first high-resolution area survey of the Galactic plane shows that the total number of UCHIIs in the Galaxy is ~750 - a factor of 3-4 fewer than found in previous large area radio surveys. It will form the basis for future tests of models of massive star formation.2018A&A...615A.103Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/615/A103CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)II/316 : UKIDSS-DR6 Galactic Plane Survey (Lucas+, 2012)J/ApJS/91/347 : A 5-GHz VLA Survey of the Galactic Plane (Becker+, 1994)J/ApJS/91/659 : Ultracompact HII regions radio images (Kurtz+, 1994)J/AJ/129/348 : Radio compact HII regions in the Milky Way (Giveon+, 2005)J/AJ/130/586 : Compact radio sources in the galactic plane (White+, 2005)J/AJ/131/2525 : MAGPIS 20cm survey (Helfand+, 2006)J/ApJS/188/123 : Bolocam Galactic Plane Survey. II. (Rosolowsky+, 2010)J/ApJS/208/11 : Red MSX Source Survey: massive protostars (Lumsden+ 2013)J/MNRAS/435/400 : ATLASGAL properties of compact HII regions (Urquhart+, 2013)J/A+A/579/A71 : Infrared emission of young HII regions (Cesaroni+, 2015)J/ApJS/205/1 : CORNISH project II. Source catalog (Purcell+, 2013)J/MNRAS/480/2423 : CORNISH project IV. Radio-selected galactic PNhttp://cornish.leeds.ac.uk/ : CORNISH home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/615/A103https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/615/A103http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/615/A103https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/615/A103https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/615/A103http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/615/A103GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/615/A103/uchiicat (CORNISH ultra-compact HII region (UCHII) catalogue with derived multi-wavelength and physical properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/615/A103/uchiicat?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/615/A103/uchiicat?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/615/A103/uchiicat?GETtext/xml+votable180.050000true272.23312-20.098710.0055555555555555565/7578 7605 7654 6/14354-14355 14358-14359 14365 29091 29094-29095 29097 29100-29101 29112 29114-29115 29461 29504-29505 29507-29508 29510-29511 29522 29529 29532-29533 29535 30218-30219 30222 30240-30241 30244-30245 30256 30258-30259 30262-30263 30268-30269 30316 30318-30319 30405 30416 30594 30600 30604-30605 30622 30640-30641 30644 30691 30694 30701 30714 30718-307199.276497240453405e-25 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/615/A103?format=asciiInfraredRadiodefaultJ/A+A/615/A103/uchiicatCORNISH ultra-compact HII region (UCHII) catalogue with derived multi-wavelength and physical propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[272.1/296.8] Right Ascension (J2000)degpos.eq.ra;meta.mainSKneb? K-band flux of nebula (subtracted stellar contamination)mJyphot.mag;em.IR.Kfloatnullablee_SKneb? Uncertainty in K-band nebular fluxmJystat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharCORNISHUnique name from Galactic coordinates (GLLL.llll+BB .bbbb)meta.id;meta.maincharDEJ2000[-20.2/26] Declination (J2000)degpos.eq.dec;meta.maine_RAJ2000[0.1/2.2] Uncertainty in right ascensionarcsecstat.error;pos.eq.rafloate_DEJ2000[0.1/2.2] Uncertainty in declinationarcsecstat.error;pos.eq.decfloatSC[3.3/12616.4] CORNISH 5GHz integrated flux density from Paper II (1)mJyphot.flux.density;em.radio.3-6GHzdoublee_SC[0.7/1121] Uncertainty in CORNISH 5GHz flux density from Paper II (1)mJystat.error;phot.flux.density;em.radio.3-6GHzfloatl_SM63-sigma upper limit flag for SM6meta.code.errorcharSM6? Remeasured MAGPIS 5GHz integrated flux densitymJyphot.flux.density;em.radio.3-6GHzdoublenullablee_SM6? Uncertainty in MAGPIS 5GHz integrated flux densitymJystat.error;phot.flux.density;em.radio.3-6GHzfloatnullablel_SM203-sigma upper limit flag for SM20meta.code.errorcharSM20? Remeasured MAGPIS 1.4GHz integrated flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_SM20? Uncertainty in MAGPIS 1.4GHz integrated flux densitymJystat.error;phot.flux.density;em.radio.750-1500MHzfloatnullableSp+IndCM20? Spectral index between 5GHz (CORNISH images) and 1.4GHz (MAGPIS images)spect.index;em.radio.3-6GHzfloatnullablee_Sp+IndCM20? Uncertainty in spectral indexstat.error;spect.index;em.radio.3-6GHzfloatnullableS3.6? Spitzer/IRAC 3.6um flux of extended sourcemJyphot.mag;em.IR.3-4umfloatnullablee_S3.6? Uncertainty in 3.6 micron flux of extended sourcemJystat.error;phot.mag;em.IR.3-4umfloatnullableS4.5? Spitzer/IRAC 4.5um flux of extended sourcemJyphot.mag;em.IR.4-8umfloatnullablee_S4.5? Uncertainty in 4.5 micron flux of extended sourcemJystat.error;phot.mag;em.IR.4-8umfloatnullableS5.8? Spitzer/IRAC 5.8um flux of extended sourcemJyphot.flux.density;em.IR.4-8umdoublenullablee_S5.8? Uncertainty in 5.8 micron flux of extended sourcemJystat.error;phot.mag;em.IR.4-8umfloatnullableS8.0? Spitzer/IRAC 8.0um flux of extended sourcemJyphot.flux.density;em.IR.8-15umdoublenullablee_S8.0? Uncertainty in 8.0 micron flux of extended sourcemJystat.error;phot.mag;em.IR.8-15umfloatnullable[3.6]? Spitzer/IRAC AB magnitude from 3.6um fluxmagphot.mag;em.IR.3-4umfloatnullablee_[3.6]? Uncertainty in AB magnitude from 3.6 micron fluxmagstat.error;phot.mag;em.IR.3-4umfloatnullable[4.5]? Spitzer/IRAC AB magnitude from 4.5um fluxmagphot.mag;em.IR.4-8umfloatnullablee_[4.5]? Uncertainty in AB magnitude from 4.5 micron fluxmagstat.error;phot.mag;em.IR.4-8umfloatnullable[5.8]? Spitzer/IRAC AB magnitude from 5.8um fluxmagphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? Uncertainty in AB magnitude from 5.8 micron fluxmagstat.error;phot.mag;em.IR.4-8umfloatnullable[8.0]? Spitzer/IRAC AB magnitude from 8.0um fluxmagphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? Uncertainty in AB magnitude from 8.0 micron fluxmagstat.error;phot.mag;em.IR.8-15umfloatnullablef_SJneb[f/t] If FALSE, a J-band nebula is not visible and the value represents a 3-sigma flux upper limitmeta.codecharSJneb? J-band flux of nebula (subtracted stellar contamination) or 3-sigma flux upper limit if f_SJned=fmJyphot.flux.density;em.IR.Jfloatnullablee_SJneb? Uncertainty in J-band nebular fluxmJystat.errorfloatnullablef_SHneb[f/t] If FALSE, an H-band nebula is not visible and the value represents a 3-sigma flux upper limitmeta.codecharSHneb? H-band flux of nebula (subtracted stellar contamination) or 3-sigma flux upper limit if f_SHned=fmJyphot.flux.density;em.IR.Hfloatnullablee_SHneb? Uncertainty in H-band nebular fluxmJystat.errorfloatnullablef_SKneb[t] If FALSE, a K-band nebula is not visible and the value represents a 3-sigma flux upper limitmeta.codecharABJneb? AB magnitude from J-band nebular flux or 3-sigma flux upper limit if f_SJned=fmagphot.flux.density;em.IR.Jfloatnullablee_ABJneb? Uncertainty in J magnitudemagstat.errorfloatnullableABHneb? AB magnitude from H-band nebular flux or 3-sigma flux upper limit if f_SHned=fmagphot.flux.density;em.IR.Hfloatnullablee_ABHneb? Uncertainty in H magnitudemagstat.errorfloatnullableABKneb? AB magnitude from K-band nebular fluxmagphot.mag;em.IR.Kfloatnullablee_ABKneb? Uncertainty in K magnitudemagstat.errorfloatnullableAH? H-band extinctionmagphys.absorption;em.IR.Hfloatnullablee_AH? Uncertainty in Ahmagstat.errorfloatnullableAK? K-band extinctionmagphys.absorption;em.IR.Kfloatnullablee_AK? Uncertainty in Akmagstat.errorfloatnullableJ-H? J-H colour of nebula in AB magnitudesmagphot.color;em.IR.J;em.IR.Hfloatnullablee_J-H? Uncertainty in J-H colourmagstat.error;phot.color;em.IR.JfloatnullableH-K? H-K colour of nebula in AB magnitudesmagphot.color;em.IR.H;em.IR.Kfloatnullablee_H-K? Uncertainty in H-K colourmagstat.error;phot.color;em.IR.HfloatnullableAV(J-H)? Visual extinction from J-H nebular colour (AB mags)magphys.absorption;em.opt.Vfloatnullablee_AV(J-H)? Uncertainty on visual extinction from J-H nebular colourmagstat.errorfloatnullableAV(H-K)? Visual extinction from H-K nebular colour (AB mags)magphys.absorption;em.opt.Vfloatnullablee_AV(H-K)? Uncertainty on visual extinction from H-K nebular colourmagstat.errorfloatnullableAV(H)? Visual extinction from intrinsic ratio between H-band flux and 5GHz flux (AB mags)magphys.absorption;em.opt.Vfloatnullablee_AV(H)? Uncertainty on AV(H)magstat.errorfloatnullableAV(K)? Visual extinction from intrinsic ratio between K-band and 5GHz flux (AB mags)magphys.absorption;em.opt.Vfloatnullablee_AV(K)? Uncertainty on AV(K)magstat.errorfloatnullabledhkpc[1.9/18.6]? Heliocentric distancekpcpos.distance;pos.heliocentricfloatnullableRMSdh?[f/t] If TRUE, the heliocentric distance was adopted from the RMS database (Lumsden et al., 2013, Cat. J/ApJS/208/11)meta.codecharHiGALdh?[f/t] If TRUE, the heliocentric distance was adopted from Cesaroni et al., 2015, Cat. J/A+A/579/A71 (and is a FAR distance)meta.codecharAGALdh?[f/t] If TRUE, the heliocentric distance was adopted from ATLASGAL (Urquhart et al., 2013, Cat. J/MNRAS/435/400)meta.codechardGkpc[3/13.2]? Galactocentric distance computed from the heliocentric distancekpcpos.distance;pos.galactocentric;meta.modelledfloatnullableD(pc)[0.01/0.9]? Physical diameter (using angular diameter from Paper II) (1)pcphys.angSizefloatnullablel_D(pc)[f/t] If TRUE, the UCHII region is unresolved and hence the physical diameter value is an upper limitmeta.code.errorcharlog(Ni)? log10 of Lyman continuum fluxlog(ph.s**-1)phot.flux.density;spect.continuumfloatnullablelog(EM)? log10 of Emission measurelog(pc.cm**-6)phys.emissMeasurefloatnullablelog(ne)? log10 of Electron densitylog(cm**-3)phys.density;phys.electronfloatnullablelog(Tb)log10 of 5GHz brightness temperaturelog(K)phys.temperature;em.radio.3-6GHzfloate_log(Tb)Uncertainty on log(Tb)log(K)stat.error;phys.temperature;em.radio.3-6GHzfloattauOptical depth at 5GHz, assuming electron temperature of 10^4^Kphys.absorption.opticalDepthfloatlog(Lbol)? log10 of Bolometric luminosity from SED fittinglog(solLum)phys.luminosityfloatnullablenewdh?[f/t] If TRUE, the heliocentric distance was computed in this work (KDA-resolved)meta.codechar