J/ApJS/165/338ivo://CDS.VizieR/J/ApJS/165/338doi:10.26093/cds/vizier.21650338CDSQuireza C.Rood R.T.Balser D.S.Bania T.M.2017-06-27T06:37:30Z2008-04-29T21:13:59ZCDS support team

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

cds-question@unistra.frh-ii-regionsradio-astronomyradial-velocityWe report radio recombination line (RRL) and continuum observations of a sample of 106 Galactic HII regions made with the NRAO 140 Foot (43m) radio telescope in Green Bank, West Virginia. We believe this to be the most sensitive RRL survey ever made for a sample this large. Most of our source integration times range between 6 and 90 hr, yielding typical rms noise levels of ~1.0-3.5mK. Our data result from two different experiments performed, calibrated, and analyzed in similar ways. A CII survey was made at the 3.5cm wavelength to obtain accurate measurements of carbon radio recombination lines. When combined with atomic (CI) and molecular (CO) data, these measurements will constrain the composition, structure, kinematics, and physical properties of the photodissociation regions that lie on the edges of HII regions. A second survey was made at the 3.5cm wavelength to determine the abundance of ^3^He in the interstellar medium of the Milky Way. Together with measurements of the ^3^He^+^ hyperfine line, we get high-precision RRL parameters for H, ^4^He, and C. Here we discuss significant improvements in these data with both longer integrations and newly observed sources.2006ApJS..165..338Qhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/165/338CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/397/213 : Galactic HII regions (Paladini+, 2003)J/AJ/130/156 : Galactic radio compact HII regions at 1.4GHz (Giveon+, 2005)J/ApJ/582/756 : Velocities of HII regions (Kolpak+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/165/338https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/165/338http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/165/338https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/165/338https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/165/338http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/165/338GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/165/338/table1 (Properties of Galactic HII Regions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/165/338/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/165/338/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/165/338/table1?GETtext/xml+votable180.050000true266.447033-28.2502830.0055555555555555566/1330 1781 1848 1930 3649 3755 14255 14263 14307 14311 14317 14359 14409 14621 14624 14644 14691 14704 15458 20849 21439 21458 21550 21646 21679 22249 23645 23982 24554 28830 28831 28875 28890 28912 28918 29091 29101 29114 29115 29116 29118 29463 29505 29508 29510 29515 29522 29533 29535 30218 30219 30241 30259 30262 30312 30318 30328 30341 30618 30624 30644 30645 30694 30695 39804 42391 42395 42397 42398 42435 42436 42445 42449 42451 42455 42456 42460 42462https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/165/338?format=asciiOpticalRadiodefaultJ/ApJS/165/338/table1Properties of Galactic HII RegionsSimbadNameSimbad column added by the CDSmeta.idcharONameOther namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalactic HII region namemeta.id;meta.maincharprimaryf_Name[a,b ] Note on the observation of Name (G1)meta.codecharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatRAB1950Hour of Right Ascension (B1950)pos.eq.ra;meta.mainDEB1950Degree of Declination (B1950)pos.eq.dec;meta.mainTintIntegration time corresponding to the spectral line datahtime.epoch;spect.linefloatrmsData rms corresponding to the spectral line datamKstat.stdevfloatQF[A-E] Spectral line quality factor (1)meta.code.qualcharSurveySurvey type (C II or ^3^He)meta.idchar_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.decnullableindexedJ/ApJS/165/338/contRadio Emission Continuum parameterse_PA-src? Error in PA-srcarcminstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalactic HII region namemeta.id;meta.maincharf_Name[a,b ] Note on the observation of Name (G1)meta.codecharTC-RA? Peak continuum intensity of antenna temperature along Right AscensionKphot.antennaTemp;stat.maxfloatnullablee_TC-RA? Error in TC-RAKstat.errorfloatnullableTC-DE? Peak continuum intensity of antenna temperature along DeclinationKphot.antennaTemp;stat.maxfloatnullablee_TC-DE? Error in TC-DEKstat.errorfloatnullablePA-RA? FWHM observed angular size along Right Ascensionarcminphys.angSize;pos.eq.rafloatnullablee_PA-RA? Error in PA-RAarcminstat.errorfloatnullablePA-DE? FWHM observed angular size along Declinationarcminphys.angSize;pos.eq.decfloatnullablee_PA-DE? Error in PA-DEarcminstat.errorfloatnullablePA-src? Geometric mean FWHM observed angular sizearcminphys.angSize;stat.meanfloatnullableQF[A-E] Continuum quality factor (1)meta.code.qualcharModeSimbad column added by the CDSmeta.code;obscharJ/ApJS/165/338/linesRadio Recombination Lines parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalactic HII region namemeta.id;meta.maincharf_Name[a,b ] Note on the observation of Name (G1)meta.codecharElSimbad column added by the CDSphys.atmol.elementcharTL? Peak intensity of antenna temperaturemKphot.antennaTempfloatnullablee_TL? Error in TLmKstat.errorfloatnullableFWHM? Line width full width at half maximumkm/sspect.line.widthfloatnullablee_FWHM? Error in FWHMkm/sstat.error;phys.angSizefloatnullableVLSR? LSR radial velocity (G2)km/sspect.dopplerVeloc;pos.lsrfloatnullablee_VLSR? Error in VLSRkm/sstat.error;phys.veloc;pos.lsrfloatnullableQF[A-E] Line quality factor (1)meta.code.qualcharMorphSpectral line shape morphology (2)meta.notecharRF[EGFP] Line reliability factor (3)meta.code.qualchar