J/MNRAS/486/21ivo://CDS.VizieR/J/MNRAS/486/21doi:10.26093/cds/vizier.74860021CDSBielby R.M.Stott J.P.Cullen F.Tripp T.M.Burchett J.N.,Fumagalli M.Morris S.L.Tejos N.Crain R.A.Bower R.G.Prochaska J.X.2024-08-19T20:18:11Z2022-12-08T12:33:39ZCDS support team

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

cds-question@unistra.frgalaxiesvisible-astronomyinfrared-sourcesintergalactic-mediumquasarsredshiftedWe present the first results from a study of OVI absorption around galaxies at z<1.44 using data from a near-infrared grism spectroscopic Hubble Space Telescope Large Programme, the Quasar Sightline and Galaxy Evolution (QSAGE) survey. QSAGE is the first grism galaxy survey to focus on the circumgalactic medium at z~1, providing a blind survey of the galaxy population. The galaxy sample is H{alpha} flux limited (f(H{alpha})>2x10^-17^erg/s/cm^2^) at 0.68<z<1.44, corresponding to >~0.2-0.8M_{sun}_/yr. In this first of 12 fields, we combine the galaxy data with high-resolution STIS and COS spectroscopy of the background quasar to study OVI in the circumgalactic medium. At z~1, we find OVI absorption systems up to b~350kpc (~4R_vir_) from the nearest detected galaxy. Further, we find ~50 per cent of >~1M_{sun}_/yr star-forming galaxies within 2R_vir_ show no associated OVI absorption to a limit of at least N(OVI)=10^13.9^cm^-2^. That we detect OVI at such large distances from galaxies and that a significant fraction of star-forming galaxies show no detectable OVI absorption disfavours outflows from ongoing star formation as the primary medium traced by these absorbers. Instead, by combining our own low- and high-redshift data with existing samples, we find tentative evidence for many strong (N(OVI)>10^14^cm^-2^) OVI absorption systems to be associated with M_*_~10^9.5-10^M_{sun}_ mass galaxies (M_halo_~10^11.5-12^M_{sun}_ dark matter haloes), and infer that they may be tracing predominantly collisionally ionized gas within the haloes of such galaxies.2019MNRAS.486...21Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/486/21CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/486/21https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/486/21http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/486/21https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/486/21https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/486/21http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/486/21GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/486/21/table4 (Properties of proximate galaxies to the quasar sightline)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/486/21/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/486/21/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/486/21/table4?GETtext/xml+votable180.050000true38.78385-4.040620.0055555555555555566/177301.2299896717679617e-19 1.6234874322677612e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/486/21?format=asciiOpticalInfrareddefaultJ/MNRAS/486/21/table4Properties of proximate galaxies to the quasar sightlinezRedshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharNameGalaxy name (QSAGEJHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainF140WmagHST/WFC3 F140W filter AB magnitudemagphot.mag;em.IR.Hfloate_F140WmagError on F140Wmagmagstat.errorfloatbImpact parameter to QSO sightlinekpcsrc.impactParamintlogMassLogarithm of galaxy stellar masslog(solMass)phys.massfloate_logMassLower error on logMasslog(solMass)stat.error;phys.massfloatE_logMassUpper error on logMasslog(solMass)stat.error;stat.maxfloatlogMhaloLogarithm of halo masslog(solMass)phys.massfloate_logMhaloLower error on logMhalolog(solMass)stat.errorfloatE_logMhaloUpper error on logMhalolog(solMass)stat.error;stat.maxfloatRvirVirial radiuskpcphys.size.radiusinte_RvirLower error on Rvirkpcstat.errorintE_RvirUpper error on Rvirkpcstat.error;stat.maxintlogSFRStar formation ratelog(solMass.yr**-1)phys.SFRfloate_logSFRLower error on logSFRlog(solMass.yr**-1)stat.error;phys.SFRfloatE_logSFRUpper error on logSFRlog(solMass.yr**-1)stat.error;stat.maxfloat