J/ApJ/744/110ivo://CDS.VizieR/J/ApJ/744/110doi:10.26093/cds/vizier.17440110CDSCiardullo R.Gronwall C.Wolf C.McCathran E.Bond N.A.Gawiser E.,Guaita L.Feldmeier J.J.Treister E.Padilla N.Francke H.,Matkovic A.Altmann M.Herrera D.2017-07-05T07:00:15Z2013-08-01T11:47:34ZCDS support team

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

cds-question@unistra.frgalaxiesvisible-astronomyline-intensitiesredshiftedWe describe the results of a new, wide-field survey for z=3.1 Ly{alpha} emitters (LAEs) in the Extended Chandra Deep Field South (ECDF-S). By using a nearly top-hat 5010{AA} filter and complementary broadband photometry from the MUSYC survey, we identify a complete sample of 141 objects with monochromatic fluxes brighter than 2.4x10^-17^erg/cm^2^/s and observers-frame equivalent widths (EWs) greater than ~80{AA} (i.e., 20{AA} in the rest frame of Ly{alpha}). The bright end of this data set is dominated by X-ray sources and foreground objects with Galaxy Evolution Explorer detections, but when these interlopers are removed, we are still left with a sample of 130 LAE candidates, 39 of which have spectroscopic confirmations. This sample overlaps the set of objects found in an earlier ECDF-S survey, but due to our filter's redder bandpass, it also includes 68 previously uncataloged sources. We confirm earlier measurements of the z=3.1 LAE emission-line luminosity function and show that an apparent anticorrelation between EW and continuum brightness is likely due to the effect of correlated errors in our heteroskedastic data set. Finally, we compare the properties of z=3.1 LAEs to LAEs found at z=2.1. We show that in the ~1Gyr after z~3, the LAE luminosity function evolved significantly, with L* fading by ~0.4mag, the number density of sources with L>1.5x10^42^erg/s declining by ~50%, and the EW scale length contracting from 70^+7^_-5_{AA} to 50^+9^_-6_{AA}. When combined with literature results, our observations demonstrate that over the redshift range z~0 to z~4, LAEs contain less than ~10% of the star formation rate density of the universe.2012ApJ...744..110Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/744/110CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/261 : GOODS initial results (Giavalisco+, 2004)J/ApJ/743/9 : z=3.1 LAEs morphological properties (Gronwall+, 2011)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/711/928 : Low-redshift Ly{alpha} galaxies from GALEX (Cowie+, 2010)J/A+A/512/A12 : VLT/VIMOS spectroscopy in GOODS-South field (Balestra+, 2010)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/176/301 : Subaru/XMM-Newton deep survey IV. (SXDS) (Ouchi+, 2008)J/ApJ/680/1072 : Ly{alpha}-emitting galaxies at 0.2<z<0.35 (Deharveng+, 2008)J/A+A/478/83 : GOODS-South Field VLT/FORS2 redshifts. III. (Vanzella+, 2008)J/ApJ/667/79 : Ly{alpha} emission-line galaxies at z=3.1 (Gronwall+, 2007)J/A+A/461/823 : Candidate Ly{alpha} emitting galaxies (Venemans+, 2007)J/ApJS/162/1 : MUSYC: optical source catalog (Gawiser+, 2006)J/ApJ/642/L13 : ECDFS MUSYC galaxies UBVRIzNB5000 photometry (Gawiser+, 2006)J/ApJS/161/21 : Extended Chandra Deep Field-South survey (Lehmer+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/744/110https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/744/110http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/744/110https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/744/110https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/744/110http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/744/110GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/744/110/LAEs (Candidate Ly{alpha} emitters: complete sample and objects below the completeness limit)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/744/110/LAEs?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/744/110/LAEs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/744/110/LAEs?GETtext/xml+votable180.050000true53.0732083-27.82802780.0055555555555555566/35935 35957https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/744/110?format=asciiOpticaldefaultJ/ApJ/744/110/LAEsCandidate Ly{alpha} emitters: complete sample and objects below the completeness limitSimbadNameSimbad column added by the CDSmeta.idcharz[0.33/3.2]? Redshiftsrc.redshiftfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/199] Running sequence numbermeta.id;meta.mainintSetSimbad column added by the CDSmeta.codecharRAJ2000[3] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[27/28] Degree of Declination (J2000)pos.eq.dec;meta.mainlogF501[-17.143/-15.227] Log flux in 5010{AA} filter (in erg/s/cm^2^)log(mW.m**-2)phot.flux.densityfloatEW[82/2575] Observed equivalent width; in {AA}0.1nmspect.line.eqWidthintComAdditional comments (1)meta.notechar