J/ApJ/760/128ivo://CDS.VizieR/J/ApJ/760/128doi:10.26093/cds/vizier.17600128CDSMallery R.P.Mobasher B.Capak P.Kakazu Y.Masters D.Ilbert O.,Hemmati S.Scarlata C.Salvato M.McCracken H.Lefevre O.Scoville N.2017-06-28T06:58:31Z2014-09-01T13:39:27ZCDS support team

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

cds-question@unistra.frline-intensitiesgalaxiesspectroscopyredshiftedWe investigate spectroscopically measured Ly{alpha} equivalent widths (EWs) and escape fractions of 244 sources of which 95 are Lyman break galaxies (LBGs) and 106 Lyman alpha emitters (LAEs) at z~4.2, z~4.8, and z~5.6 selected from intermediate and narrowband observations. The sources were selected from the Cosmic Evolution Survey and observed with the DEIMOS spectrograph. We find that the distribution of EWs shows no evolution with redshift for both the LBG selected sources and the intermediate/narrowband LAEs. We also find that the Ly{alpha} escape fraction of intermediate/narrowband LAEs is on average higher and has a larger variation than the escape fraction of LBG selected sources. The escape fraction does not show a dependence with redshift. Similar to what has been found for LAEs at low redshifts, the sources with the highest extinctions show the lowest escape fractions. The range of escape fractions increases with decreasing extinction. This is evidence that the dust extinction is the most important factor affecting the escape of Ly{alpha} photons, but at low extinctions other factors, such as the H I covering fraction and gas kinematics, can be just as effective at inhibiting the escape of Ly{alpha} photons.2012ApJ...760..128Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/760/128CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)J/A+A/544/A156 : UltraVISTA Catalogue Release DR1 (McCracken+, 2012)J/ApJ/736/31 : HETDEX pilot survey. II. 1.9<z<3.8 LAEs (Blanc+, 2011)J/ApJ/725/394 : High-redshift Ly{alpha} emitters (Hu+, 2010)J/ApJ/721/1 : Keck ESI observations of Ly{alpha} systems (Penprase+, 2010)J/ApJS/184/158 : Chandra COSMOS survey I. (Elvis+, 2009)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/A+A/497/635 : XMM-Newton wide-field survey in COSMOS (Cappelluti+, 2009)J/ApJS/176/301 : Subaru/XMM-Newton deep survey IV. (SXDS) (Ouchi+, 2008)J/ApJS/172/523 : COSMOS field Ly{alpha} emitters at z~5.7 (Murayama+, 2007)J/ApJ/671/1227 : Ly{alpha} galaxies at z~4.5 (Dawson+, 2007)J/ApJ/667/79 : Ly{alpha} emission-line galaxies at z=3.1 (Gronwall+, 2007)J/ApJ/648/7 : LAEs at z=6.5 in Subaru Deep Field (Kashikawa+, 2006)J/ApJ/642/L13 : ECDFS MUSYC galaxies UBVRIzNB5000 photometry (Gawiser+, 2006)J/PASJ/58/313 : Ly{alpha} emitters in the SUBARU Deep Field (Shimasaku+, 2006)J/PASJ/57/165 : Ly{alpha} emitters in the SUBARU Deep Field (Taniguchi+, 2005)J/AJ/127/180 : The Hawaii Hubble Deep Field North (Capak+, 2004)J/ApJ/519/1 : Lyman-break galaxies at z {>~} 4 (Steidel+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/760/128https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/760/128http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/760/128https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/760/128https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/760/128http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/760/128GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/760/128/sources (Ly{alpha} emission and best-fit model SED parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/760/128/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/760/128/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/760/128/sources?GETtext/xml+votable180.050000true150.805416942.9250.0055555555555555566/27245 27256 27258 27259https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/760/128?format=asciiOpticaldefaultJ/ApJ/760/128/sourcesLy{alpha} emission and best-fit model SED parametersIDSource identificationmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[149.5/150.9] Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[1.5/2.93] Declination (J2000)degpos.eq.dec;meta.mainNoteType of object (LBG, QSO or AGN), filter or "Photo-z" notemeta.notez[3.7/6.5] Redshift (spectroscopic, but see "Note" column)src.redshiftfloatnullableFlux[2/617] Ly{alpha} Flux (in 10^-18^erg/cm^2^/s = 10^-21^W/m2)zW.m**-2phot.fluxfloatnullablee_Flux[1/261] Flux uncertaintyzW.m**-2stat.error;phot.fluxfloatnullableEW[2.9/90.9]? Ly{alpha} rest-frame equivalent width (in {AA})0.1nmspect.line.eqWidthfloatnullableE_EW[0.1/34]? Positive error on EW0.1nmstat.error;stat.maxfloatnullablee_EW[0.7/67]? Negative error on EW0.1nmstat.error;spect.line.eqWidthfloatnullableFWHM[2.3/31] Ly{alpha} rest-frame FWHM0.1nmspect.line.widthfloatnullablee_FWHM[0.1/7.3] FWHM uncertainty0.1nmstat.error;phys.angSizefloatnullableSkew[0/14.3]? Skew value s (1)stat.fit.paramfloatnullablee_Skew[0.01/10312]? Skew uncertaintystat.errordoublenullableSimbadSimbad column added by the CDSmeta.ref.urlcharchi2[0.1/3000]? Best {chi}^2^ fitstat.fit.chi2;meta.modelledfloatnullableE(B-V)[0/0.5]? Extinction (best E(B-V))magphot.color.excessfloatnullablelogSFR[-0.4/3.1]? log median SFRlog(solMass.yr**-1)phys.SFRfloatnullableB_logSFR[0.2/3.6]? Upper value of log SFRlog(solMass.yr**-1)phys.SFR;stat.maxfloatnullableb_logSFR[0.03/3.1]? Lower value of log SFRlog(solMass.yr**-1)phys.SFR;stat.minfloatnullablelogM[8.1/11.4]? log median masslog(solMass)phys.massfloatnullableB_logM[8.1/11.9]? Upper value of log Masslog(solMass)phys.mass;stat.maxfloatnullableb_logM[7.9/11.1]? Lower value of log Masslog(solMass)phys.mass;stat.minfloatnullableAge[0.01/2.1]? Median ageGyrtime.age;stat.medianfloatnullableB_Age[0.01/2.3]? Upper value of ageGyrtime.age;stat.maxfloatnullableb_Age[0.01/1.2]? Lower value of ageGyrtime.age;stat.minfloatnullableCOSMOSCross-match within 0.5" with the COSMOS photometry catalog (II/284)meta.ref.urlintnullable