J/ApJ/758/135ivo://CDS.VizieR/J/ApJ/758/135doi:10.26093/cds/vizier.17580135CDSKornei K.A.Shapley A.E.Martin C.L.Coil A.L.Lotz J.M.,Schiminovich D.Bundy K.Noeske K.G.2017-11-10T11:15:23Z2014-08-08T12:08:37ZCDS support team

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

cds-question@unistra.frgalaxiesvisible-astronomyabsolute-magnituderedshiftedsurveysspectroscopyultraviolet-astronomyWe investigate galactic-scale outflowing winds in 72 star-forming galaxies at z~1 in the Extended Groth Strip. Galaxies were selected from the DEEP2 survey and follow-up LRIS spectroscopy was obtained covering Si II, C IV, Fe II, Mg II, and Mg I lines in the rest-frame ultraviolet. Using Galaxy Evolution Explorer (GALEX), Hubble Space Telescope (HST), and Spitzer imaging available for the Extended Groth Strip, we examine galaxies on a per-object basis in order to better understand both the prevalence of galactic outflows at z~1 and the star-forming and structural properties of objects experiencing outflows. Gas velocities, measured from the centroids of Fe II interstellar absorption lines, are found to span the interval [-217,+155]km/s. We find that ~40% (10%) of the sample exhibits blueshifted Fe II lines at the 1{sigma} (3{sigma}) level. We also measure maximal outflow velocities using the profiles of the Fe II and Mg II lines; we find that Mg II frequently traces higher velocity gas than Fe II. Using quantitative morphological parameters derived from the HST imaging, we find that mergers are not a prerequisite for driving outflows. More face-on galaxies also show stronger winds than highly inclined systems, consistent with the canonical picture of winds emanating perpendicular to galactic disks. In light of clumpy galaxy morphologies, we develop a new physically motivated technique for estimating areas corresponding to star formation. We use these area measurements in tandem with GALEX-derived star formation rates (SFRs) to calculate SFR surface densities. At least 70% of the sample exceeds an SFR surface density of 0.1M_{sun}_/yr/kpc2, the threshold necessary for driving an outflow in local starbursts. At the same time, the outflow detection fraction of only 40% in Fe II absorption provides further evidence for an outflow geometry that is not spherically symmetric. We see a ~3{sigma} trend between outflow velocity and SFR surface density, but no significant trend between outflow velocity and SFR. Higher resolution data are needed in order to test the scaling relations between outflow velocity and both SFR and SFR surface density predicted by theory.2012ApJ...758..135Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/758/135CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/268 : DEEP2 Redshift Survey, Data Release 4 (Matthews+ 2013)II/301 : The DEEP2-DR1 Photometric Catalog (Coil+ 2004)J/ApJS/202/6 : XDEEP2 survey catalog (Goulding+, 2012)J/A+A/526/A72 : Early-type galaxies in the EGS (Fernandez Lorenzo+, 2011)J/ApJS/193/30 : UV-to-FIR analysis of sources in the EGS. II. (Barro+, 2011)J/ApJS/193/13 : Spitzer/IRAC sources in the EGS I. SEDs (Barro+, 2011)J/ApJ/728/38 : AEGIS: demographics of X-ray and optical AGN (Yan+, 2011)J/ApJ/717/1181 : Spitzer power-law galaxies in EGS (Park+, 2010)J/ApJS/180/102 : AEGIS-X: Chandra deep survey (Laird+, 2009)J/ApJS/177/431 : Mid-IR sources in EGS (Barmby+, 2008)J/ApJ/654/115 : DEEP2 Galaxy Redshift Survey: SDSS QSOs (Coil+, 2007)J/MNRAS/377/806 : Tully-Fisher relation of DEEP2 galaxies (Chiu+, 2007)J/AJ/132/2159 : IRAC counterparts of 6cm galaxies in EGS (Willner+, 2006)J/AJ/128/163 : Galaxy morphological classification (Lotz+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/758/135https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/758/135http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/758/135https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/758/135https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/758/135http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/758/135GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/758/135/table1 (Sample outflow parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/758/135/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/758/135/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/758/135/table1?GETtext/xml+votable180.050000true214.356958352.50699720.0055555555555555566/11424 11425https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/758/135?format=asciiUVOpticaldefaultJ/ApJ/758/135/table1Sample outflow parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[12008116/12100420] Source identification number (<DEEP2-GRS NNNNNNNN> in Simbad)meta.id;meta.mainintf_ID[i] Source with HST imaging (1)meta.codecharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainzsys[0.2/1.4] Systemic redshift (z_sys_) (2)src.redshift;pos.heliocentricdoubleBMag[-22.2/-17.2] Absolute B-band magnitudemagphot.mag;em.opt.BfloatU-B[0.1/1.3] U-B color indexmagphot.color;em.opt.U;em.opt.BfloatM*[8.8/11.3] Log of stellar masslog(solMass)phys.massfloatSFR[0/97]? Dust-corrected UV star formation rate estimated from GALEX observationssolMass/yrphys.SFRintnullableAuv[0/4.5] Dust attenuation estimated from UV colorsmagphys.absorptionfloatCarea[0/427]? Galaxy "clump area" (Section 3.2)kpc**2phys.areaintnullableParea[0/1391]? Galaxy Petrosian area ({pi}R^2^_P_)kpc**2phys.areaintnullableV1[-217/154]? Outflow velocity (3)km/sphys.veloc.expansionintnullablee_V1[13/185]? V1 uncertainty (3)km/sstat.errorintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refchar