J/A+A/683/A238ivo://CDS.VizieR/J/A+A/683/A238doi:10.26093/cds/vizier.36830238CDSJones G.C.Bunker A.J.Saxena A.Witstok J.Stark D.P.Arribas S.,Baker W.M.Bhatawdekar R.Bowler R.Boyett K.Cameron A.J.Carniani S.,Charlot S.Chevallard J.Curti M.Curtis-Lake E.Eisenstein D.J.,Hainline K.Hausen R.Ji Z.Johnson B.D.Kumari N.Looser T.J.,Maiolino R.Maseda M.V.Parlanti E.Rix H.-W.Robertson B.E.,Sandles L.Scholtz J.Smit R.Tacchella S.Uebler H.Williams C.C.,Willott C.2024-11-07T20:01:53Z2024-03-22T09:32:10ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometryccd-photometryThe rest-frame UV recombination emission line Ly{alpha} can be powered by ionising photons from young massive stars in star forming galaxies, but its ability to be resonantly scattered by neutral gas complicates its interpretation. For reionization era galaxies, a neutral intergalactic medium (IGM) will scatter Lya from the line of sight, making Lya a useful probe of the neutral fraction evolution. Here, we explore Ly{alpha} in JWST/NIRSpec spectra from the ongoing JADES programme, which targets hundreds of galaxies in the well-studied GOODS-S and GOODS-N fields. These sources are UV-faint (-20.4<M_UV_<-16.4), and thus represent a poorly-explored class of galaxies. The low spectral resolution (R~100) spectra of a subset of 84 galaxies in GOODS-S with z_spec_>5.6 (as derived with optical lines) are fit with line and continuum models, in order to search for significant line emission. Through exploration of the R100 data, we find evidence for Ly{alpha} in 17 sources. This sample allows us to place observational constraints on the fraction of galaxies with Ly{alpha} emission in the redshift range 5.6<z<7.5, with a decrease from z=6 to z=7. We also find a positive correlation between Ly{alpha} equivalent width and M_{UV}, as seen in other samples. These results are used to estimate the neutral gas fraction at z~7, agreeing with previous results (X_HI_~0.5-0.9).2024A&A...683A.238Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/683/A238CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/683/A238https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/683/A238http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/683/A238https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/683/A238https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/683/A238http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/683/A238GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/683/A238/ancdata (Galaxy properties from literature)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/683/A238/ancdata?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/683/A238/ancdata?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/683/A238/ancdata?GETtext/xml+votable180.050000true214.8508352.776660.0055555555555555565/6814 6/6383 6539 8915 8921 10151 10298-10299 11063 11252 11425 16486 17677 17683 17688 17690 17692 17741 18475 18788 18796 18800 25675 28448 34793 35935 46885 46896 49012https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/683/A238?format=asciidefaultJ/A+A/683/A238/ancdataGalaxy properties from literaturerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefLiterature reference for properties (1)meta.ref;pos.framecharNameName of galaxymeta.id;meta.maincharRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainzspSpectroscopic redshiftsrc.redshiftfloate_zsp? Uncertainty on redshiftstat.errordoublenullablel_REWUpper limit flag on REWmeta.code.errorcharREWLy{alpha} rest equivalent width0.1nmspect.line.eqWidthdoublee_REW? Uncertainty on Ly{alpha} rest equivalent width0.1nmstat.errordoublenullablel_MUVUpper limit flag on MUVmeta.code.errorcharMUVUV absolute magnitudemagphys.magAbsfloate_MUV? Uncertainty on UV absolute magnitudemagstat.errordoublenullable