J/ApJ/815/57ivo://CDS.VizieR/J/ApJ/815/57doi:10.26093/cds/vizier.18150057CDSU V.Hemmati S.Darvish B.Mobasher B.Nayyeri H.Dickinson M.,Stern D.Spinrad H.Mallery R.2017-09-05T14:48:13Z2016-03-30T15:46:53ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyredshiftedgalaxy-classification-systemsinterstellar-mediumWe explore the relationship between the spectral shape of the Ly{alpha} emission and the UV morphology of the host galaxy using a sample of 304 Ly{alpha}-emitting BVi-dropouts at 3<z<7 in the Great Observatories Origins Deep Survey and Cosmic Evolution Survey fields. Using our extensive reservoir of high-quality Keck DEIMOS spectra combined with Hubble Space Telescope WFC3 data, we measure the Ly{alpha} line asymmetries for individual galaxies and compare them to axial ratios measured from observed J- and H-band (restframe UV) images. We find that the Ly{alpha} skewness exhibits a large scatter at small elongation (a/b<2), and this scatter decreases as the axial ratio increases. Comparison of this trend to radiative transfer models and various results from the literature suggests that these high-redshift Ly{alpha} emitters are not likely to be intrinsically round and symmetric disks, but they probably host galactic outflows traced by Ly{alpha} emitting clouds. The ionizing sources are centrally located, and the optical depth is a good indicator of the absorption and scattering events on the escape path of Ly{alpha} photons from the source. Our results find no evidence of evolution in Ly{alpha} asymmetry or axial ratio with look-back time.2015ApJ...815...57Uhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/815/57CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)II/318 : GOODS Source Catalogs release r2.0z (Giavalisco+ 2008)II/261 : GOODS initial results (Giavalisco+, 2004)J/ApJ/803/34 : z~4-10 galaxies from HST legacy fields (Bouwens+, 2015)J/ApJS/207/24 : GOODS-S CANDELS multiwavelength catalog (Guo+, 2013)J/ApJ/760/128 : Ly{alpha} emission from 4<z<6 COSMOS sources (Mallery+, 2012)J/ApJ/758/135 : DEEP2 galaxies with UV spectra in the EGS (Kornei+, 2012)J/ApJ/753/95 : LAE galaxies in the ECDF-S at z~2.1 and z~3.1 (Bond+, 2012)J/ApJ/751/29 : Ly{alpha} profiles of LAEs at z=3.1 (Yamada+, 2012)J/ApJ/743/9 : z=3.1 LAEs morphological properties (Gronwall+, 2011)J/ApJ/742/3 : Photometric catalogs for ECDF-S and CDF-N (Rafferty+, 2011)J/ApJ/725/394 : High-redshift Ly{alpha} emitters (Hu+, 2010)J/ApJ/706/762 : LAEs at z~4.5 in the LALA Cetus field (Wang+, 2009)J/ApJ/696/546 : Ly{alpha} emitters at z~4.86 (Shioya+, 2009)J/A+A/498/13 : Lyman-{alpha} emitters from redshifts z~2-3 (Nilsson+, 2009)J/ApJS/172/523 : COSMOS field Ly{alpha} emitters at z~5.7 (Murayama+, 2007)J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006)J/ApJ/648/7 : LAEs at z=6.5 in Subaru Deep Field (Kashikawa+, 2006)J/PASJ/58/313 : Ly{alpha} emitters in the SUBARU Deep Field (Shimasaku+, 2006)J/A+A/431/793 : Ly-alpha emitters around MRC 0316-257 (Venemans+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/815/57https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/815/57http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/815/57https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/815/57https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/815/57http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/815/57GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/815/57/table1 (Spectroscopic properties of Ly{alpha}-emitters (LAEs))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/815/57/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/815/57/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/815/57/table1?GETtext/xml+votable180.050000true53.14262-27.826540.0055555555555555566/11252 27245 27256 27258 27259 35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/815/57?format=asciiOpticaldefaultJ/ApJ/815/57/table1Spectroscopic properties of Ly{alpha}-emitters (LAEs)TypeBVi Dropout type (1)src.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning sequence numbermeta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainz[3.2/7.3] Spectroscopic redshiftsrc.redshiftfloatzflag[AB-] Redshift quality flag (A=most reliable) (2)src.redshiftcharSkew[0/9.4] Skewnessstat.fit.paramfloate_Skew[0.01/5] Uncertainty in Skewstat.errorfloata/b[1/3.5] Axial Ratiophys.angSize;arith.ratiofloatGOODSDisplay the GOODS data (II/261 and II/318) within 0.3"meta.ref.urlintnullableCOSMOSDisplay the COSMOS data from Capak+, 2007, II/284; Mallery+, 2012, J/ApJ/760/128 and Murayama+, 2007, J/ApJS/172/523, within 0.3"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar