J/MNRAS/476/4725ivo://CDS.VizieR/J/MNRAS/476/4725doi:10.26093/cds/vizier.74764725CDSSobral D.Santos S.Matthee J.Paulino-Afonso A.Ribeiro B.Calhau J.,Khostovan A.A.2024-08-18T20:18:43Z2021-05-31T16:34:09ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsultraviolet-astronomyredshiftedphotometryline-intensitiesWe present and explore deep narrow- and medium-band data obtained with the Subaru and the Isaac Newton Telescopes in the ~2deg^2^ COSMOS field. We use these data as an extremely wide, low-resolution (R~20-80) Integral Field Unit survey to slice through the COSMOS field and obtain a large sample of ~4000 Ly{alpha} emitters (LAEs) from z~2 to 6 in 16 redshift slices (SC4K). We present new Ly {alpha} luminosity functions (LFs) covering a comoving volume of ~10^8^Mpc^3^. SC4K extensively complements ultradeep surveys, jointly covering over 4dex in Ly{alpha} luminosity and revealing a global (2.5<z<6) synergy LF with {alpha}=-1.93^+0.12^_-0.12_, log_10_{Phi}^*^_Ly{alpha}_=-3.45^+0.22^_-0.29_Mpc^-3^, and log_10_L^*^_Ly{alpha}_=42.93^+0.15^_-0.11_erg/s. The Schechter component of the Ly{alpha} LF reveals a factor ~5 rise in L^*^_Ly{alpha}_ and a ~7 x decline in {Phi}^*^_Ly{alpha}_ from z~2 to 6. The data reveal an extra power-law (or Schechter) component above L_Ly{alpha}_~=10^43.3^erg/s at z~2.2-3.5 and we show that it is partially driven by X-ray and radio active galactic nucleus (AGN), as their Ly{alpha} LF resembles the excess. The power-law component vanishes and/or is below our detection limits above z>3.5, likely linked with the evolution of the AGN population. The Ly {alpha} luminosity density rises by a factor ~2 from z~2 to 3 but is then found to be roughly constant (1.1^+0.2^_-0.2_x10^40^erg/s/Mpc^3^) to z~6, despite the ~0.7 dex drop in ultraviolet (UV) luminosity density. The Ly{alpha}/UV luminosity density ratio rises from 4+/-1 per cent to 30+/-6 per cent from z~2.2 to 6. Our results imply a rise of a factor of ~=2 in the global ionization efficiency ({xi}_ion_) and a factor ~=4+/-1 in the Ly{alpha} escape fraction from z~2 to 6, hinting for evolution in both the typical burstiness/stellar populations and even more so in the typical interstellar medium conditions allowing Ly{alpha} photons to escape.2018MNRAS.476.4725Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/476/4725CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)J/ApJ/819/62 : The COSMOS-Legacy Survey (CLS) catalog (Civano+, 2016)J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)J/MNRAS/471/629 : Bootes-HiZELS. Em-line galaxies at z=0.4-4.7 (Matthee+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/476/4725https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/476/4725http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/476/4725https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/476/4725https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/476/4725http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/476/4725GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/476/4725/tablea1 (Our full SC4K catalogue of candidate LAEs which we release with this paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/476/4725/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/476/4725/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/476/4725/tablea1?GETtext/xml+votable180.050000true150.833362.227430.0055555555555555565/6814 6/27245 27247 27344https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/476/4725?format=asciiUVdefaultJ/MNRAS/476/4725/tablea1Our full SC4K catalogue of candidate LAEs which we release with this paperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSC4KSC4K designation, SC4K-AAAAA-NNNNN (ID_SC4K)meta.id;meta.maincharRAJ2000Right ascension (J2000) (RA)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (DEC)degpos.eq.dec;meta.mainBandObserved band (1)instr.bandpasscharMBmagMedium-band or narrow-band magnitude (AB) (MB_mag)magphot.magfloate_MBmagMedium-band or narrow-band magnitude error (MB_mag_err)magstat.error;phot.magfloatBBmagBroad-band magnitude (AB) (BB_mag)magphot.magfloate_BBmagBroad-band magnitude error (BB_mag_err)magstat.error;phot.magfloatFluxFlux (Flux)mW.m**-2phot.fluxdoubleE_FluxError on Flux (upper value) (Flux_err_up)mW.m**-2stat.error;stat.maxdoublee_FluxError on Flux (lower value) (Flux_err_down)mW.m**-2stat.error;phot.fluxdoubleEW0Equivalent width (EW_0)0.1nmspect.line.eqWidthdoubleE_EW0Error on EW0 (upper value) (EW_0_err_up)0.1nmstat.error;stat.maxdoublee_EW0Error on EW0 (lower value) (EW_0_err_down)0.1nmstat.errordoubleLyaLumLyman{alpha} luminosity (Lya_Lum)1e-07Wphys.luminosity;em.UVfloatE_LyaLumError on LyaLum (upper value) (Lya_lum_err_up)1e-07Wstat.error;stat.maxfloate_LyaLumError on LyaLum (lower value) (Lya_lum_err_down)1e-07Wstat.errorfloatCosmos[0/1] C-COSMOS legagy coverage? (C_COSMOS_LEGACY_COVERAGE)meta.codeintXrayDet[0/1] X-ray detected? (XRAY_DET)meta.codeintRadioDet[0/1] Radio detected? (RADIO_DETECTED)meta.codeintJ/MNRAS/476/4725/tablec1The global Ly{alpha} luminosity function and for each of the medium0band filters in SC4K/this studySampleSample (Sample)src.samplecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogLumbinLyman{alpha} luminosity (log_Lum_bin)log(1e-07W)phys.luminosity;em.UVfloate_logLumbinLyman{alpha} luminosity error (delta_bin)log(1e-07W)stat.errorfloatCountsObserved number of source (Counts)ctmeta.numberinte_Countsrms uncertainty on Counts (Counts_err)ctstat.error;phot.countdoublePhiobsObserved number density (Phi_obs)Mpc**-3meta.id;meta.maindoubleE_PhiobsError on Phiobs (upper value) (Phi_obs_err_up)Mpc**-3stat.error;stat.maxdoublee_PhiobsError on Phiobs (lower value) (Phi_obs_err_down)Mpc**-3stat.errordoubleE_PhiobspertObserved+perturbed number density (Phi_obs_pert_err_up)Mpc**-3stat.error;stat.maxdoublee_PhiobspertError+perturbed on Phiobspert (upper value) (Phi_obs_pert_err_down)Mpc**-3stat.errordoublePhiobscompCompleteness corrected number density (Phi_obs_comp)Mpc**-3meta.number;phys.densitydoubleE_PhiobscompError on Phiobscomp (upper value) (Phi_obs_comp_err_up)Mpc**-3stat.error;stat.maxdoublee_PhiobscompError on Phiobscomp (lower value) (Phi_obs_comp_err_down)Mpc**-3stat.errordoublePhifinalFinal number density(Phi_final)Mpc**-3meta.iddoubleE_PhiError on Phi (upper value) (Phi_err_up)Mpc**-3stat.error;stat.maxdoublee_PhiError on Phi (lower value) (Phi_err_down)Mpc**-3stat.errordoubleE_PhifinalError on Phifinal (upper value) (Phi_final_err_up)Mpc**-3stat.error;stat.maxdoublee_PhifinalError on Phifinal (lower value) (Phi_final_err_down)Mpc**-3stat.errordoubleJ/MNRAS/476/4725/tablec2A compilation of Ly{alpha} luminosity functions used or compared with in this studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStudyNStudy number (STUDY_N)meta.idfloatRefReferences to the original paper (Reference) (1)meta.refcharCommComments paper (Comments_PAPER)meta.bibcharzminMinimum redshift (z_min)src.redshiftfloatzmaxMaximum redshift (z_max)src.redshiftfloatlogLLyman{alpha} luminosity (LogL)log(1e-07W)phys.luminosity;em.UVfloate_logLLyman{alpha} luminosity error (D_LogL)log(1e-07W)stat.errorfloatlogPhiNumber density (LogPhi)log(Mpc**-3)meta.number;phys.densitydoubleE_logPhiError on logPhi (upper value) (D_LogPhi_up)log(Mpc**-3)stat.error;stat.maxdoublee_logPhiError on logPhi (lower value) (D_LogPhi_down)log(Mpc**-3)stat.errordouble