J/ApJS/278/33ivo://CDS.VizieR/J/ApJS/278/33CDSKageura Y.Ouchi M.Nakane M.Umeda H.Harikane Y.Yoshiura S.,Nakajima K.Yajima H.Thai T.T.2026-04-02T06:28:33Z2026-03-09T13:17:36ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyredshiftedinfrared-astronomyultraviolet-astronomyabsolute-magnitudeline-intensitiesWe present the statistical properties of Ly{alpha} emission in 586 galaxies at z=4.5-14.2, observed by multiple JWST/NIRSpec spectroscopy projects, including the JADES, GLASS, CEERS, and GO/DDT programs. We obtain Ly{alpha} equivalent width (EW), Ly{alpha} escape fraction, and ionizing photon production efficiency measurements or upper limits for these galaxies, and confirm that the Lya-emitting galaxy fraction decreases toward higher redshifts. We derive Ly{alpha} luminosity functions from z~5 to z~10-14 with the observed Ly{alpha} EW distributions and galaxy UV luminosity functions, and find an ~3dex decrease in number density at L_Ly{alpha}_=10^42^-10^43^erg/s over the redshift range. Notably, this study presents the first constraints on the Ly{alpha} luminosity function at z~8-14. We obtain the neutral hydrogen fractions of x_HI_=0.17_-0.16_^+0.23^, 0.63_-0.28_^+0.18^, 0.79_-0.21_^+0.13^, and 0.88_-0.13_^+0.11^ at z~6, 7, 8-9, and 10-14, respectively, via comparisons of the reionization models developed by seminumerical simulations with 21cmFAST explaining the observations of Ly{alpha}, UV continuum, and Planck electron optical depth. The high x_HI_ values over z~7-14 suggest a late and sharp reionization, with the primary reionization process occurring at z~6-7. Such a late and sharp reionization is not easily explained by either a clumpy intergalactic medium or sources of reionization in a classical faint-galaxy or a bright-galaxy/active galactic nucleus (AGN) scenario, unless a very high escape fraction or AGN duty cycle is assumed at z~6-7.2025ApJS..278...33Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/278/33CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/176/301 : Subaru/XMM-Newton deep survey IV. (SXDS) (Ouchi+, 2008)J/MNRAS/449/4204 : WFC3/UVIS quasar-stacked spectrum at z=~2.4 (Lusso+, 2015)J/ApJ/854/73 : Full-data results of HFF: galaxies z~6-9 (Ishigaki+, 2018)J/AJ/162/47 : UV luminosity in ~25000 2<z<9 galaxies (Bouwens+, 2021)J/MNRAS/517/3263 : IGM Neutral Fraction Inference (Bolan+, 2022)J/ApJ/932/76 : Ly{beta} dark gaps in z<~6 QSOs spectra (Zhu+, 2022)J/ApJS/269/33 : JWST z=4-10 gal. mass-metallicities (Nakajima+, 2023)J/A+A/690/A288 : JADES NIRSpec initial DR for the HUDF (Bunker+, 2024)J/A+A/693/A60 : JWST/NIRSpec reference sample (Heintz+, 2025)J/A+A/694/A100 : Spectral properties of 468 LAEs MUSE obs. (Vitte+, 2025)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/278/33https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/278/33http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/278/33https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/278/33https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/278/33http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/278/33GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/278/33/tablea1 (in this study)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/278/33/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/278/33/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/278/33/tablea1?GETtext/xml+votable180.050000true53.08294-27.855630.0055555555555555566/7904 11252 11425 16486 35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/278/33?format=asciiUVInfrareddefaultJ/ApJS/278/33/tablea1in this studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentifiermeta.id;meta.maincharRAJ2000[3.6/215.3] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-30.5/70.3] Declination (J2000)degpos.eq.dec;meta.mainz[4.5/14.2] Systemic redshiftsrc.redshiftfloatr_z[abc] Reference flag on z (1)meta.ref;src.redshiftcharUVMAG[-21.7/-14.8]? UV absolute magnitude (2)magphys.magAbs;em.UVfloatnullabler_UVMAG[bcde] Reference flag on UVMAG (1)meta.ref;pos.framecharl_FLyaThe 3{sigma} upper limit flag on FLyameta.code.errorcharFLya[2/1000]? Ly{alpha} flux; 1e-19erg/s/cm^2^ (2)1e-19mW.m**-2phot.flux;em.line.Lyalphaintnullablee_FLya[3/201]? The 1{sigma} uncertainty in FLya1e-19mW.m**-2stat.error;phot.flux;em.line.LyalphaintnullableDelvLya[0/1233]? Ly{alpha} velocity offsetkm/sphys.veloc;arith.diff;em.line.Lyalphaintnullablee_DelvLya[5/407]? The 1{sigma} uncertainty in DelvLyakm/sstat.error;phys.veloc;arith.diffintnullabler_DelvLya[c] Reference flag on DelvLya (1)meta.ref;phys.veloc;arith.diffcharl_fescThe 3{sigma} upper limit flag on fescmeta.code.errorcharfesc[0.01/10.73]? Ly{alpha} escape fractionphys.veloc.escape;arith.ratio;em.line.Lyalphafloatnullablee_fesc[0.01/2.2]? The 1{sigma} uncertainty in fescstat.error;phys.veloc.escape;arith.ratiofloatnullabler_fesc[c] Reference flag on fesc (1)meta.ref;pos.framecharl_EWThe 3{sigma} upper limit flag on EWLyameta.code.error;spect.line.eqWidthcharEW[1/14219]? Rest-frame Ly{alpha} equivalent width; Angstroms, not corrected for slit loss (2)0.1nmspect.line.eqWidth;em.line.Lyalphaintnullablee_EW[1/82]? The 1{sigma} uncertainty in EW0.1nmstat.error;spect.line.eqWidth;em.line.Lyalphaintnullabler_EW[bc] Reference flag on EW (1)meta.ref;spect.line.eqWidthcharl_EWT24The 3{sigma} upper limit flag on EWT24meta.code.errorcharEWT24[2/278]? Rest-frame Tang+ 2024MNRAS.531.2701T Ly{alpha} equivalent width; Angstroms0.1nmspect.line.eqWidth;em.line.Lyalphaintnullablee_EWT24[1/54]? The 1{sigma} uncertainty in EWT240.1nmstat.error;spect.line.eqWidth;em.line.Lyalphaintnullablel_EWJ24The 3{sigma} upper limit flag on EWJ24meta.code.errorcharEWJ24[7/1401]? Rest-frame Jones+ 2025MNRAS.536.2355J Ly{alpha} equivalent width; Angstroms0.1nmspect.line.eqWidth;em.line.Lyalphaintnullablee_EWJ24[1/116]? The 1{sigma} uncertainty in EWJ240.1nmstat.error;spect.line.eqWidth;em.line.LyalphaintnullablePID[1180/3215] JWST program identifiermeta.id;obsint