J/A+A/171/261ivo://CDS.VizieR/J/A+A/171/261doi:10.26093/cds/vizier.31710261CDSCaswell J.L.Haynes R.F.2012-09-24T08:56:36Z2001-04-12T23:18:13ZCDS support team

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

cds-question@unistra.frh-ii-regionsradial-velocityradio-astronomyradio-sourcesWe tabulate velocities and other parameters of hydrogen recombination lines near 5GHz (H109{alpha} and H110{alpha}) for 316 HII regions observed with the Parkes 64-m radio telescope. Results of a new search for formaldehyde absorption are also listed. Source selection was based on the 5GHz continuum southern galactic plane survey of Haynes et al. (1978, 1979). Data is given for most H II regions in the galactic longitude range 210 to 360 degrees that show 5GHz continuum brightness temperature exceeding 1K (as observed with the 4 arcminute beam of the Parkes 64-m telescope), together with a selection of sources that are weaker or outside of this longitude range. Tabulated data include source coordinates, peak brightness, flux density, and angular size from the 5GHz continuum survey; radial velocities of detected formaldehyde absorption lines; recombination line peak brightness, radial velocity, and line width; derived electron temperature assuming LTE; derived kinematic distance from the Sun and galactocentric radius; and presence or absence of a visible optical counterpart. In cases where kinematic distance is ambiguous, both near and far distances are tabulated; a flag is given if there is a strong preference for near or far distance based on information such as H I or H2CO absorption measurements or visibility of an optical counterpart. Many of these radio HII regions lie beyond the range of optical detection, at distances exceeding several kpc; they thus provide a comprehensive coverage of the southern HII regions in the Galaxy over the longitude range 210 to 360 degrees and constitute a vital data base for the study of galactic structure.1987A&A...171..261Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/171/261CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/171/261https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/171/261http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/171/261https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/171/261https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/171/261http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/171/261GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/171/261/table1 (Hydrogen recombination line data (1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/171/261/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/171/261/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/171/261/table1?GETtext/xml+votable180.050000true112.523991-18.5409570.0055555555555555565/10453 10556 6/21504 28808-28809 28812 28814 28818 28824 28827 28831 28875 28898 28900-28901 28915 29094 29113 37334-37335 37343 37363-37366 37369 37371-37372 37752 37837 37839 37846 37850 37872 37884 37886 37893-37895 37897 37899 37906 37921 37923-37924 37926 37928-37929 37931 38016-38018 38024 38026 39250 39384 39386 39804 41598 41655 41657-41659 41671 41673 41675-41678 41681-41683 41685 41689 41696 41706 41758-41759 41763 41765-41767 41769-41770 41772-41773 41777-41778 41780-41782 41798-41799 41803 41805 41811 41817 41820 41824 42158-42159 42163 42169-42174 42207 42210-42212 42214-42216 42218 42228-42230 42376 42379 42381-42382 42387 42390-42393 42395-42398 42435-42436 42438-42441 42444-42445 42447 42449-42451 42455-42457 42460-42462 42496-42498 42500 42512 42516 43015 43017-43021 43024 43026-43027 430403.313034785154005e-24 3.313034785154005e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/171/261?format=asciiOpticalRadiodefaultJ/A+A/171/261/table1Hydrogen recombination line data (1)u_Tc[ :] Uncertainty flag on Tcmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLONGalactic longitude (1)degpos.galactic.lonGLATGalactic latitude (1)degpos.galactic.latfloatm_V[ab]? Recombination line velocity componentmeta.code.multipcharRA1950Right Ascension (1950) (1)pos.eq.ra;meta.mainDE1950Declination (1950) (1)pos.eq.dec;meta.mainTcPeak 5GHz continuum brightness temperatureKphys.temperature;stat.maxfloatDiam1? Angular size (first dimension) (2)arcminphys.angSizefloatnullableu_Diam1[ :] Uncertainty flag on Diam1meta.code.errorcharDiam2? Angular size (second dimension) (2)arcminphys.angSizefloatnullableu_Diam2[ :] Uncertainty flag on Diam2meta.code.errorcharS? 5GHz continuum flux densityJyphot.flux.density;em.radio.3-6GHzfloatnullableu_S[ :] Uncertainty flag on Smeta.code.errorcharV1-H2CO? LSR velocity of H2CO absorption line, first velocity componentkm/sphys.veloc;pos.lsrfloatnullableV2-H2CO? LSR velocity of H2CO absorption line, second velocity componentkm/sphys.veloc;pos.lsrfloatnullableV3-H2CO? LSR velocity of H2CO absorption line, third velocity componentkm/sphys.veloc;pos.lsrfloatnullableV4-H2CO? LSR velocity of H2CO absorption line, fourth velocity componentkm/sphys.veloc;pos.lsrfloatnullablenH2CO? Note on H2CO measurements: ND: no detectable H2CO absorption, NA: no available H2CO measurementmeta.notecharrH2CO? Reference for H2CO results: CH: this survey, Caswell and Haynes (1987), WG: Whiteoak and Gardner 1974A&A....37..389W Gardner and Whiteoak 1984MNRAS.210...23Gmeta.ref;pos.framecharTLPeak recombination line brightness temperature (3)Kphys.temperaturefloatu_TL[ :] Uncertainty flag on TLmeta.code.errorcharDVWidth of recombination line, full width at half intensity (3)km/sspect.line.widthintu_DV[ :] Uncertainty flag on DVmeta.code.errorcharVLSR velocity of recombination line (3)km/sphys.veloc;pos.lsrintu_V[ :] Uncertainty flag on Vmeta.code.error;pos.cartesian.ycharTeLTE Electron TemperatureKphys.temperature.electron;phys.electronintu_Te[ :] Uncertainty flag on Temeta.code.errorcharRg? Galactocentric radius (4)kpcpos.distancefloatnullableu_Rg[ :] Uncertainty flag on Rgmeta.code.errorchard1? Kinematic distance, or near kinematic distance (4) (5)kpcpos.distancefloatnullableu_d1[ :] Uncertainty flag on d1meta.code.errorchard2? Far kinematic distance (4) (5)kpcpos.distancefloatnullablef_d1? Near/far preference flag, N: near kinematic distance is significantly more likely, F: far kinematic distance is significantly more likelymeta.codecharn_d1? HI absorption flag, HI: near/far preference is based on 21 cm absorption line datameta.notecharref? Reference for recombination line results if cited from another source (6)meta.ref;pos.framecharNote[ N] Source comments, N indicates that section 4 of Caswell and Haynes (1987) contains additional information or discussion for this sourcemeta.notecharOptOptical counterpart (7)meta.id.assocchar_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