J/ApJ/793/92ivo://CDS.VizieR/J/ApJ/793/92doi:10.26093/cds/vizier.17930092CDSTang Y.Giavalisco M.Guo Y.Kurk J.2017-12-22T05:33:43Z2017-05-03T15:39:59ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsredshiftedinterstellar-mediumWe report on a study of the 2300-2600 {AA} Fe II/Fe II* multiplets in the rest-UV spectra of star-forming galaxies at 1.0<z<2.6 as probes of galactic-scale outflows. We extracted a mass-limited sample of 97 galaxies at z~1.0-2.6 from ultra-deep spectra obtained during the GMASS spectroscopic survey in the GOODS South field with the Very Large Telescope and FORS2. We obtain robust measures of the rest equivalent width of the Fe II absorption lines down to a limit of W_r_>1.5 {AA} and of the Fe II* emission lines to W_r_>0.5 {AA}. Whenever we can measure the systemic redshift of the galaxies from the [O II] emission line, we find that both the Fe II and Mg II absorption lines are blueshifted, indicating that both species trace gaseous outflows. We also find, however, that the Fe II gas has generally lower outflow velocity relative to that of Mg II. We investigate the variation of Fe II line profiles as a function of the radiative transfer properties of the lines, and find that transitions with higher oscillator strengths are more blueshifted in terms of both line centroids and line wings. We discuss the possibility that Fe II lines are suppressed by stellar absorptions. The lower velocities of the Fe II lines relative to the Mg II doublet, as well as the absence of spatially extended Fe II* emission in two-dimensional stacked spectra, suggest that most clouds responsible for Fe II absorption lie close (3~4 kpc) to the disks of galaxies. We show that the Fe II/Fe II* multiplets offer unique probes of the kinematic structure of galactic outflows.2014ApJ...793...92Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/793/92CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/549/A63 : GMASS photometry (Kurk+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/793/92https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/793/92http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/793/92https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/793/92https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/793/92http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/793/92GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/793/92/table1 (Global Properties of Galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/793/92/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/793/92/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/793/92/table1?GETtext/xml+votable180.050000true53.07687-27.799203060.0055555555555555566/35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/793/92?format=asciiOpticaldefaultJ/ApJ/793/92/table1Global Properties of GalaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[AB] Galaxy's group (1)meta.codecharGMASSGMASS identifier (NNNN)meta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainzRedshiftsrc.redshiftdoubleSFRStar formation ratesolMass/yrphys.SFRfloate_SFRError in SFRsolMass/yrstat.error;phys.SFRdoubleMassStellar masssolMassphys.massfloate_MassError in MasssolMassstat.error;phys.massfloatE(B-V)The (B-V) color excessmagphot.color.excessfloate_E(B-V)Error in E(B-V)magstat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar