J/other/JApA/25.ivo://CDS.VizieR/J/other/JApA/25.143CDSMohan R.Dwarakanath K.S.Srinivasan G.2006-09-10T12:52:08Z2006-09-10T12:49:13ZCDS support team

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

cds-question@unistra.frinterstellar-mediumh-i-line-emissionradio-sourcesWe have used the Giant Meterwave Radio Telescope (GMRT) to measure the Galactic HI 21-cm line absorption towards 102 extragalactic radio continuum sources, located at high (|b|>15{deg}) Galactic latitudes. The Declination coverage of the present survey is DE~-45{deg}. With a mean rms optical depth of ~0.003, this is the most sensitive Galactic HI 21-cm line absorption survey to date. To supplement the absorption data, we have extracted the HI 21-cm line emission profiles towards these 102 lines of sight from the Leiden Dwingeloo Survey of Galactic neutral hydrogen. We have carried out a Gaussian fitting analysis to identify the discrete absorption and emission components in these profiles. In this paper, we present the spectra and the components. A subsequent paper will discuss the interpretation of these results.2004JApA...25..143Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/JApA/25.143CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/54 : Atlas of Galactic Neutral Hydrogen (Hartmann+, 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/JApA/25.143https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/JApA/25.143http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/JApA/25.143https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/JApA/25.143https://vizier.iucaa.in/viz-bin/votable?-source=J/other/JApA/25.143http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/JApA/25.143GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/JApA/25.143/appena (List of sources observed with the GMRT)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/JApA/25.143/appena?https://vizier.iucaa.in/viz-bin/conesearch/J/other/JApA/25.143/appena?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/JApA/25.143/appena?GETtext/xml+votable180.050000true2.7188333-41.88633330.0055555555555555566/64 124 392 556 579 839 911 1025 1154 1546 1549 2207 2245 2600 3918 4695 4696 5306 5458 6605 6751 7148 7345 8345 8466 8626 8977 9204 9347 9403 9442 9460 11551 12091 13410 14908 16170 16281 16298 16427 16509 16722 18022 18096 18506 18661 19060 19101 19177 19190 19398 19413 19645 20111 21266 21437 21968 22943 22965 23304 23478 24615 25112 25131 25302 26582 26932 27909 28311 28383 28492 29963 30021 31334 31696 31875 31894 32325 34123 34210 34675 35482 35491 36417 36554 38800 40060 43670 43822 43936 44247 44293 44523 44735 44776 44832 46562 46709 47007 48123 48529https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/JApA/25.143?format=asciiRadiodefaultJ/other/JApA/25.143/appenaList of sources observed with the GMRTrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource designation (JHHMM-DDd)meta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloattaurmsrms optical depth in the HI absorption spectraphys.absorption.opticalDepthfloatS1420MHzObserved flux-density, at 1420.4MHzJyphot.flux.density;em.radio.750-1500MHzfloatJ/other/JApA/25.143/appenc*Discrete HI featuresrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceName of the background source (1)meta.id;meta.maincharl_tauHILimit flag on tauHI (for optical depth limit obtained from the HI absorption profiles along the respective directionsmeta.code.errorchartauHI? HI absorption peak optical depth (GMRT) or HI absorption optical depth limit if l_tauHI = "<"phys.absorption.opticalDepthfloatnullablee_tauHI? rms uncertainty on tauHIstat.errorfloatnullableVlsrA? HI absorption LSR velocity (GMRT) (2)km/sspect.dopplerVelocfloatnullablee_VlsrA? rms uncertainty on VlsrAkm/sstat.errorfloatnullableFWHMA? HI absorption mean FWHM (GMRT) (2)(3)km/sspect.line.widthfloatnullablee_FWHMA? rms uncertainty on FWHMAkm/sstat.errorfloatnullableTB? HI emission brightness temperature (LDS)Kphot.fluxfloatnullablee_TB? rms uncertainty on TBKstat.errorfloatnullableVlsrE? HI emission LSR velocity (LDS) (4)km/sspect.dopplerVeloc;em.line.HIdoublenullablee_VlsrE? rms uncertainty on VlsrEkm/sstat.errorfloatnullableFWHME? HI emission mean FWHM (LDS) (4)km/sspect.line.widthfloatnullablee_FWHME? rms uncertainty on FWHMEkm/sstat.errorfloatnullablel_TSLimit flag on TSmeta.code.errorcharTS? Spin temperature of the absorbing gas (5)Kphys.temperature;phys.electronintnullableNote[No data] No data from LDSmeta.notechar