J/MNRAS/449/3263ivo://CDS.VizieR/J/MNRAS/449/3263doi:10.26093/cds/vizier.74493263CDSJohnson S.D.Chen H.-W.Mulchaey J.S.2024-08-14T20:21:13Z2016-01-21T15:36:00ZCDS support team

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

cds-question@unistra.frquasarsgalaxiesspectroscopyWe present a study of extended galaxy halo gas through HI and OVI absorption over two decades in projected distance at z~0.2. The study is based on a sample of 95 galaxies from a highly complete (>80 percent) survey of faint galaxies (L>0.1L*) with archival quasar absorption spectra and 53 galaxies from the literature. A clear anticorrelation is found between HI (OVI) column density and virial radius normalized projected distance, d/Rh. Strong HI (OVI) absorption systems with column densities greater than 10^14.0^ (10^13.5^)cm^-2^ are found for 48 of 54 (36 of 42) galaxies at d<Rh indicating a mean covering fraction of <{kappa}_HI_>=0.89 (<{kappa}_OVI_>=0.86). OVI absorbers are found at d~Rh, beyond the extent observed for lower ionization species. At d/Rh=1-3 strong HI (OVI) absorption systems are found for only 7 of 43 (5 of 34) galaxies (<{kappa}_HI_>=0.16 and <{kappa}_OVI_>=0.15). Beyond d=3Rh, the HI and OVI covering fractions decrease to levels consistent with coincidental systems. The high completeness of the galaxy survey enables an investigation of environmental dependence of extended gas properties. Galaxies with nearby neighbours exhibit a modest increase in Ovi covering fraction at d>Rh compared to isolated galaxies (<{kappa}_OVI_~0.13 versus 0.04) but no excess HI absorption. These findings suggest that environmental effects play a role in distributing heavy elements beyond the enriched gaseous haloes of individual galaxies. Finally, we find that differential HI and OVI absorption between early- and late-type galaxies continues from d<Rh to d~3Rh.2015MNRAS.449.3263Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/449/3263CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/434/1765 : Catalog of galaxies around PKS 0405-123 (Johnson+, 2013)http://www.sdss3.org : SDSS-III websitehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/449/3263https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/449/3263http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/449/3263https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/449/3263https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/449/3263http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/449/3263GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/449/3263/table1 (Summary of galaxy and absorber properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/3263/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/3263/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/3263/table1?GETtext/xml+votable180.050000true10.5927917-10.62644440.0055555555555555566/4204 4821 4824 4961 5274 5409 5759 5773 5861 6081 6104 6557 7381 8282 8304 9031 9175 9186 9440 9756 9783 10300 10517 10602 10764 10889 10969 11021 11209 11396 16894 17772 18770 20008 22659 22662 23060 25932 26017 26259 26965 27006 27338 27376 27526 31535 31663 35180https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/449/3263?format=asciidefaultJ/MNRAS/449/3263/table1Summary of galaxy and absorber propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy sightline namemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainzgalGalaxy redshiftsrc.redshiftfloatlogM*Stellar masslog(solMass)phys.massfloatClass[Early Late] Classification (1)meta.code.classcharEnv[I NI A] Environment class (2)meta.code.classcharSurveySurveymeta.notechardDistancekpcpos.distanceintd/RhVirial radius normalized projected distancepos.distancefloatl_logNHILimit flag on logNHImeta.code.errorcharlogNHI? HI column densitylog(cm**-2)phys.columnDensityfloatnullablee_logNHI? rms uncertainty on logNHIlog(cm**-2)stat.errorfloatnullablelogNHIu? Upper value of logNHI when intervallog(cm**-2)phys.columnDensityfloatnullablel_logNHOVILimit flag on logNHOVImeta.code.errorcharlogNHOVI? OIV column density (3)log(cm**-2)phys.columnDensityfloatnullablee_logNHOVI? rms uncertainty on logNHOVIlog(cm**-2)stat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar