J/A+A/611/A99ivo://CDS.VizieR/J/A+A/611/A99doi:10.26093/cds/vizier.36110099CDSKlaassen P.D.Johnston K.G.Urquhart J.S.Mottram J.C.Peters T.,Kuiper R.Beuther H.van der Tak F.F.S.Goddi C.2018-05-16T08:34:03Z2018-04-18T08:08:17ZCDS support team

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

cds-question@unistra.frh-ii-regionsradio-sourcesmillimeter-astronomysubmillimeter-astronomyHigh-mass stars form in much richer environments than those associated with isolated low-mass stars, and once they reach a certain mass, produce ionised (HII) regions. The formation of these pockets of ionised gas are unique to the formation of high-mass stars (M>8M_{sun}_), and present an excellent opportunity to study the final stages of accretion, which could include accretion through the HII region itself. This study of the dynamics of the gas on both sides of these ionisation boundaries in very young HII regions aims to quantify the relationship between the HII regions and their immediate environments. We present high-resolution (~0.5") ALMA observations of nine HII regions selected from the Red MSX Source (RMS, Lumsden et al., Cat. J/ApJS/208/11) survey with compact radio emission and bolometric luminosities greater than 10^4^L_{sun}_. We focus on the initial presentation of the data, including initial results from the radio recombination line H29{alpha} some complementary molecules, and the 256GHz continuum emission.2018A&A...611A..99Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/611/A99CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/487/253 : The RMS survey: ^13^CO observations of YSOs (Urquhart+ 2008)J/A+A/501/539 : RMS survey. 6cm observations of YSOs (Urquhart+, 2009)J/ApJS/208/11 : Red MSX Source Survey: massive protostars (Lumsden+, 2013)J/MNRAS/452/4029 : RMS survey (Urquhart+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/611/A99https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/611/A99http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/611/A99https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/611/A99https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/611/A99http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/611/A99GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/611/A99/table1 (Source locations and beam properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/611/A99/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/611/A99/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/611/A99/table1?GETtext/xml+votable180.050000true190.8813333-62.60377780.005555555555555556Cone search capability for table J/A+A/611/A99/tablea2 (Clump positions, areas, derived fluxes, masses, and column densities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/611/A99/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/611/A99/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/611/A99/tablea2?GETtext/xml+votable180.050000true190.88125-62.60371110.0055555555555555566/41658 41677 42171 42215 42224 42226 42228 42500 43024https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/611/A99?format=asciiRadiodefaultJ/A+A/611/A99/table1Source locations and beam propertiesSimbadNameSimbad column added by the CDSmeta.idcharVlsrLSR velocitykm/sphys.veloc;pos.lsrfloatNameHII region namemeta.id;obs.fieldcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Peak right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Peak declination (J2000)pos.eq.dec;meta.mainBmajSynthetised beam major axisarcsecphys.angSize;srcfloatBminSynthetised beam minor axisarcsecphys.angSize;srcfloatBPA[] Synthetised beam position angledegpos.posAng;instr.beamfloatrmsContinuum rms noisemJy/beamstat.stdev;instr.det.noise;spect.continuumfloatSNameShort HII region namemeta.idcharne[1.00e+07] Electron densitycm**-3phys.density;phys.electrondoubleT[33/99] TemperatureKphys.temperaturefloatJ/A+A/611/A99/tablea2Clump positions, areas, derived fluxes, masses, and column densitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSNameShort HII region namemeta.idcharIDNumber of the identified core within the HII regionmeta.id;obs.fieldintRAJ2000Peak right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Peak declination (J2000)pos.eq.dec;meta.mainAreaEnclosed area of identified corearcsec**2phys.areafloatFluxFlux of the identified core of H29{alpha} linemJyphot.flux;em.line.HalphafloatM20KCore mass assuming T=20KsolMassphys.massfloatM50KCore mass assuming T=50KsolMassphys.massfloatM100KCore mass assuming T=100KsolMassphys.massfloatlogN20KColumn density assuming T=20Klog(cm.s**-2)phys.columnDensityfloatlogN50KColumn density assuming T=50Klog(cm.s**-2)phys.columnDensityfloatlogN100KColumn density assuming T=100Klog(cm.s**-2)phys.columnDensityfloat