J/ApJ/933/87ivo://CDS.VizieR/J/ApJ/933/87doi:10.26093/cds/vizier.19330087CDSJung I.Papovich C.Finkelstein S.L.Simons R.C.Estrada-Carpenter V.,Backhaus B.E.Cleri N.J.Finlator K.Giavalisco M.Ji Z.Matharu J.,Momcheva I.Straughn A.N.Trump J.R.2025-02-12T20:09:06Z2024-10-09T15:57:39ZCDS support team

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

cds-question@unistra.frgalaxiesredshiftedinfrared-astronomyspectroscopyultraviolet-astronomyvisible-astronomyabsolute-magnitudehst-photometryline-intensitiessurveysReionization is an inhomogeneous process, thought to begin in small ionized bubbles of the intergalactic medium (IGM) around overdense regions of galaxies. Recent Ly{alpha} studies during the epoch of reionization show evidence that ionized bubbles formed earlier around brighter galaxies, suggesting higher IGM transmission of Ly{alpha} from these galaxies. We investigate this problem using IR slitless spectroscopy from the Hubble Space Telescope (HST) Wide-Field Camera 3 (WFC3) G102 grism observations of 148 galaxies selected via photometric redshifts at 6.0<z<8.2. These galaxies have spectra extracted from the CANDELS Ly{alpha} Emission at Reionization (CLEAR) survey. We combine the CLEAR data for 275 galaxies with the Keck Deep Imaging Multi-Object Spectrograph and MOSFIRE data set from the Texas Spectroscopic Search for Ly{alpha} Emission at the End of Reionization Survey. We constrain the Ly{alpha} equivalent width (EW) distribution at 6.0<z<8.2, which is described by an exponential form, dN/dEW{prop.to}exp(-EW)/W_0_, with the characteristic e-folding scale width (W_0_). We confirm a significant drop in the Ly{alpha} strength (i.e., W_0_) at z>6. Furthermore, we compare the redshift evolution of W0 between galaxies at different UV luminosities. UV-bright (M_UV_<-21 [i.e., L_UV_>L*]) galaxies show weaker evolution with a decrease of 0.4(+/-0.2) dex in W_0_ at z>6, while UV-faint (M_UV_>-21 [_LUV_<L*]) galaxies exhibit a significant drop of 0.7-0.8(+/-0.2) dex in W_0_ from z<6 to z>6. If the change in W_0_ is proportional to the change in the IGM transmission for Ly{alpha} photons, then this is evidence that the transmission is "boosted" around UV-brighter galaxies, suggesting that reionization proceeds faster in regions around such galaxies.2022ApJ...933...87Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/933/87CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVI/146 : Galaxies in the Cosmic Dawn II simulation (Ocvirk+, 2020)J/ApJ/667/79 : Ly{alpha} emission-line galaxies at z=3.1 (Gronwall+, 2007)J/ApJS/176/301 : Subaru/XMM-Newton deep survey IV. (SXDS) (Ouchi+, 2008)J/A+A/498/13 : Lyman-{alpha} emitters from redshifts z~2-3 (Nilsson+, 2009)J/ApJ/711/928 : Low-redshift Ly{alpha} galaxies from GALEX (Cowie+, 2010)J/ApJ/725/394 : High-redshift Ly{alpha} emitters (Hu+, 2010)J/ApJ/744/110 : LAE galaxies between 2.1=<z<=3.1 (Ciardullo+, 2012)J/ApJ/756/164 : UV galaxies in CANDELS from z=8 to z=4 (Finkelstein+, 2012)J/ApJ/7/128 : Lya emission from 4<z<6 sources in COSMOS (Mallery+, 2012)J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)J/ApJ/783/119 : z~1 Lya emitters. I. 135 candidates from GALEX (Wold+, 2014)J/ApJ/803/34 : z~4-10 galaxies from HST legacy fields (Bouwens+, 2015)J/ApJ/8/71 : UV mag of candidate galaxies at 3~<z~<8.5 (Finkelstein+, 2015)J/ApJ/812/114 : Grism Lens-Amplified Survey from Space. I. (Treu+, 2015)J/A+A/608/A8 : MUSE Hubble Ultra Deep Field Survey. VIII (Leclercq+, 2017)J/ApJ/898/171 : CLEAR. II. SFRs of quiescent gal. (Estrada-Carpenter+, 2020)J/ApJ/923/203 : CLEAR: HST G102 & G141 obs. of CANDELS gal. (Simons+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/933/87https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/933/87http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/933/87https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/933/87https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/933/87http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/933/87GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/933/87/table2 (Summary of the CANDELS Ly{alpha} Emission at Reionization (CLEAR) 6.0<z<8.2 targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/933/87/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/933/87/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/933/87/table2?GETtext/xml+votable180.050000true53.142085-27.779851110.0055555555555555566/11252 359351.4096873584774176e-19 1.7721910056019106e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/933/87?format=asciiUVOpticalInfrareddefaultJ/ApJ/933/87/table2Summary of the CANDELS Ly{alpha} Emission at Reionization (CLEAR) 6.0<z<8.2 targetsf_ID[e] Flag on ID (2)meta.codecharRAJ2000[53/190] Right Ascension, decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000[-28/62.4] Declination, decimal degrees (J2000)degpos.eq.dec;meta.mainJmag[25/30] HST/WFC3 F125W magnitude (AB) from CLEAR spectrummagphot.mag;em.IR.JfloatE_Jmag[0/0.4] Upper uncertainty on Jmagmagstat.error;stat.max;phot.magfloate_Jmag[0/0.3] Lower uncertainty on Jmagmagstat.error;stat.min;phot.magfloatUVMag[-23/-16] Absolute UV magnitude, M_UV_ (3)magphys.magAbs;em.UV.100-200nmfloatE_UVMag[0/1] Upper uncertainty on UVMagmagstat.error;stat.max;phys.magAbsfloate_UVMag[0/0.5] Lower uncertainty on UVMagmagstat.error;stat.min;phys.magAbsfloatzphot[6/8.2] Photometric redshiftsrc.redshiftfloatE_zphot[0.02/5.4] Upper (1{sigma}) uncertainty on zphotstat.error;stat.max;src.redshiftfloate_zphot[0.02/6] Lower (1{sigma}) uncertainty on zphotstat.error;stat.min;src.redshiftfloatEWLya[3/14672]? Ly{alpha} rest-frame equivalent width (4)0.1nmspect.line.eqWidth;em.line.LyalphafloatnullableS14Display data from Skelton+ 2014, J/ApJS/214/24 within 0.5"meta.ref.urlintnullableF15Display data from Finkelstein+ 2015, J/ApJ/810/71 within 0.5"meta.ref.urlintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadNameSimbad column added by the CDSmeta.idcharnullableIDIdentifiers (1)meta.id;meta.maincharl_EWLyaLimit flag on EWLyameta.code.error;spect.line.eqWidth;em.line.Lyalphachar