J/ApJ/517/282ivo://CDS.VizieR/J/ApJ/517/282doi:10.26093/cds/vizier.15170282CDSHuang M.Bania T.M.Bolatto A.Chamberlin R.A.Ingalls J.G.,Jackson J.M.Lane A.P.Stark A.A.Wilson R.W.Wright G.A.2013-03-06T06:17:49Z2000-03-16T10:10:34ZCDS support team

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

cds-question@unistra.frh-ii-regionsradio-astronomyWe report observations of atomic carbon (C I [^3^P - ^3^P_0_]) for a sample of 49 southern hemisphere H II regions using the Antarctic Submillimeter Telescope and Remote Observatory. The sources are compact and isolated members of the Wilson et al. (1970) H109{alpha} radio recombination line (RRL) catalog. The fourth Galactic quadrant is well covered by the sample. Atomic carbon emission is detected toward all of the regions, with multiple C I emission components found toward most sources. The RRL velocity is used to identify the C I emission associated with the H II region. We measure the mean velocity difference between the C I and RRL emission to be 0.8{+/-}2.8 km s^-1^. Within the measurement errors this is exact agreement in velocity; we conclude that all H II regions have associated C I emission. The mean C I line temperature of these components is 2.4{+/-}1.8 K, compared with 0.7{+/-}0.7 K for the C I emission components not associated with the H II region. This suggests that C I intensity is dominated by local heating. The FWHM line width of C I gas associated with H II regions also is marginally greater than that found for unassociated gas (6.7{+/-}3.0, compared with 4.8{+/-}2.4 km s-1).1999ApJ...517..282Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/517/282CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/517/282https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/517/282http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/517/282https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/517/282https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/517/282http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/517/282GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/517/282/table1 (C I emission properties of the HII regions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/517/282/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/517/282/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/517/282/table1?GETtext/xml+votable180.050000true270.031358-23.2764170.0055555555555555566/28915 37872 37884 37923 37924 38016 38024 41655 41772 41812 41820 41824 42169 42170 42172 42214 42215 42224 42225 42226 42376 42392 42398 42436 42441 42456 42462 42498 43017 43019https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/517/282?format=asciiRadiodefaultJ/ApJ/517/282/table1C I emission properties of the HII regionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.maincharRAB1950Right Ascension (B1950)pos.eq.ra;meta.mainDEB1950Declination (B1950)pos.eq.dec;meta.mainVLSRLocal Standard of Rest velocitykm/sphys.veloc;pos.lsrfloate_VLSRUncertainty in V-LSRkm/sstat.error;phys.veloc;pos.lsrfloatTempPeak temperatureKphys.temperature;stat.maxfloate_TempUncertainty in TempKstat.errorfloatFWHMFull Width Half Maximum of the emission linekm/sspect.line.widthfloate_FWHMUncertainty in FWHMkm/sstat.error;phys.angSizefloatAreaLine areaK.km/sphys.area;spect.linefloate_AreaUncertainty in AreaK.km/sstat.error;phys.areafloatGRMSResidual rms after Gaussian fit subtractionKstat.fit.residual;stat.fit.param;meta.modelledfloatBRMS1{sigma} rms noise level in the baselineKinstr.det.noisefloatn_NameBn: nth order polynomial baseline removedmeta.notecharf_Name[orfn] (1)meta.codechar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed