J/ApJ/943/162ivo://CDS.VizieR/J/ApJ/943/162doi:10.26093/cds/vizier.19430162CDSPeca A.Cappelluti N.Urry C.M.LaMassa S.Marchesi S.Ananna T.T.,B_alokovic M.Sanders D.Auge C.Treister E.Powell M.Turner T.J.,Kirkpatrick A.Tian C.2024-11-06T20:27:53Z2023-02-10T09:33:58ZCDS support team

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

cds-question@unistra.frsurveysx-ray-sourcesactive-galactic-nucleiWe present X-ray spectral analysis of XMM-Newton and Chandra observations in the 31.3deg^2^ Stripe-82X (S82X) field. Of the 6181 unique X-ray sources in this field, we analyze a sample of 2937 candidate active galactic nuclei (AGNs) with solid redshifts and sufficient counts determined by simulations. Our results show an observed population with median values of spectral index , column density log and intrinsic, de-absorbed, 2-10keV luminosity log, in the redshift range 0-4. We derive the intrinsic, model-independent, fraction of AGNs that are obscured (22<=log(NH/cm^-2^)<24), finding a significant increase in the obscured AGN fraction with redshift and a decline with increasing luminosity. The average obscured AGN fraction is 57+/-4% for log(LX/erg/s)>43. This work constrains the AGN obscuration and spectral shape of the still uncertain high-luminosity and high-redshift regimes (log(LX/erg/s)>45.5, z>3), where the obscured AGN fraction rises to 64+/-12%. We report a luminosity and density evolution of the X-ray luminosity function, with obscured AGNs dominating at all luminosities at z>2, and unobscured sources prevailing at log(LX/erg/s)>45 at lower redshifts. Our results agree with the evolutionary models in which the bulk of AGN activity is triggered by gas-rich environments and in a downsizing scenario. Moreover, the black hole accretion density (BHAD) is found to evolve similarly to the star formation rate density, confirming the coevolution between AGN and host galaxy, but suggesting different timescales in their growing history. The derived BHAD evolution shows that Compton-thick AGNs contribute to the accretion history of AGNs as much as all other AGN populations combined.2023ApJ...943..162Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/943/162CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/817/172 : X-ray Observations of Stripe 82 (LaMassa+, 2016)J/ApJ/876/50 : X-ray+MIR AGNs in Stripe 82 with eBOSS spectra (LaMassa+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/943/162https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/943/162http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/943/162https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/943/162https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/943/162http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/943/162GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/943/162/catalog (Final master cleaned catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/943/162/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/943/162/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/943/162/catalog?GETtext/xml+votable180.050000true0.979576940.205196940.0055555555555555565/4438 4457-4458 4500-4502 4505 4522 4697 5802 6/17406-17407 17662-17663 17742-17743 17745 17748-17749 17758 17761 17763-17764 17766-17767 17769 17772-17773 17780 17806-17807 17816-17817 17819 17827 17836 17840-17842 17991 17997 17999 18012 18019 18024-18025 18028 18032 18065 18069 18071 18073-18074 18076 18085-18086 18092 18096 18112 18114 18176 18766 18772-18773 18777-18780 18782 18785 18787 18793-18796 18800 18865 19023 19027 19030 19032-19033 19035-19036 19038 19045 19091 19097 19099 19110 19456-19458 23102 23145 23148 23182-23183 23190-23192 23196-23197 23234 30029 30031 36861 36863https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/943/162?format=asciiX-raydefaultJ/ApJ/943/162/catalogFinal master cleaned catalogB_FluxSSoft band flux upper 90%cl range [erg/s/cm2] (flux_s_ru)mW.m**-2phot.flux;stat.maxdoubleFluxHHard band flux [erg/s/cm2] (flux_h)mW.m**-2phot.flux;em.X-raydoubleb_FluxHHard band flux lower 90%cl range [erg/s/cm2] (flux_h_rl)mW.m**-2phot.flux;stat.mindoubleB_FluxHHard band flux upper 90%cl range [erg/s/cm2] (flux_h_ru)mW.m**-2phot.flux;stat.maxdoubleLobsFObserved Full band luminosity [erg/s] (lumin_of)1e-07Wphys.luminosity;em.X-raydoubleb_LobsFObserved Full band luminosity lower 90%cl range [erg/s] (lumin_of_rl)1e-07Winstr.bandwidth;stat.mindoubleB_LobsFObserved Full band luminosity upper 90%cl range [erg/s] (lumin_of_ru)1e-07Winstr.bandwidth;stat.maxdoubleLobsSObserved Soft band luminosity [erg/s] (lumin_os)1e-07Wphys.luminosity;em.X-raydoubleb_LobsSObserved Soft band luminosity lower 90%cl range [erg/s] (lumin_os_rl)1e-07Winstr.bandwidth;stat.mindoubleB_LobsSObserved Soft band luminosity upper 90%cl range [erg/s] (lumin_os_ru)1e-07Winstr.bandwidth;stat.maxdoubleLobsHObserved Hard band luminosity [erg/s] (lumin_oh)1e-07Wphys.luminosity;em.X-raydoubleb_LobsHObserved Hard band luminosity lower 90%cl range [erg/s] (lumin_oh_rl)1e-07Winstr.bandwidth;stat.mindoubleB_LobsHObserved Hard band luminosity upper 90%cl range [erg/s] (lumin_oh_ru)1e-07Winstr.bandwidth;stat.maxdoubleLintFIntrinsic Full band luminosity [erg/s] (lumin_f)1e-07Wphys.luminosity;em.X-raydoubleb_LintFIntrinsic Full band luminosity lower 90%cl range [erg/s] (lumin_f_rl)1e-07Winstr.bandwidth;stat.mindoubleB_LintFIntrinsic Full band luminosity upper 90%cl range [erg/s] (lumin_f_ru)1e-07Winstr.bandwidth;stat.maxdoubleLintSIntrinsic Soft band luminosity [erg/s] (lumin_s)1e-07Wphys.luminosity;em.X-raydoubleb_LintSIntrinsic Soft band luminosity lower 90%cl range [erg/s] (lumin_s_rl)1e-07Winstr.bandwidth;stat.mindoubleB_LintSIntrinsic Soft band luminosity upepr 90%cl range [erg/s] (lumin_s_ru)1e-07Winstr.bandwidthdoubleLintHIntrinsic Hard band luminosity [erg/s] (lumin_h)1e-07Wphys.luminosity;em.X-raydoubleb_LintHIntrinsic Hard band luminosity lower 90%cl range [erg/s] (lumin_h_rl)1e-07Winstr.bandwidth;stat.mindoubleB_LintHIntrinsic Hard band luminosity upper 90%cl range [erg/s] (lumin_h_ru)1e-07Winstr.bandwidth;stat.maxdoubleb_NHObscuring column density, lower 90%cl range [cm-2] (nh_rl)cm**-2phys.columnDensity;stat.mindoubleB_NHObscuring column density, upper 90%cl range [cm-2] (nh_ru)cm**-2phys.columnDensity;stat.maxdoublegammaPhoton Index (gamma)spect.indexdoublebgamma? Photon Index lower 90%cl range (gamma_rl)spect.indexdoublenullableE_ctsFFull band counts upper error 1 sigma (cts_f_eu)ctstat.error;stat.maxfloatctsSSoft band counts (cts_s)ctphot.count;em.X-rayfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource ID from (LaMassa et al., 2016ApJ...817..172L, Cat. J/ApJ/817/172 (srcid)meta.id;meta.mainintRAJ2000X-ray right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000X-ray declination (J2000)degpos.eq.dec;meta.mainObsIdObs ID from (LaMassa et al., 2016ApJ...817..172L, Cat. J/ApJ/817/172 (obsid)meta.id;obslongTexpEffective exposure time [s] (src_exp)stime.duration;obs.exposuredoublectsFFull band counts (cts_f)ctphot.count;em.X-rayfloate_ctsFFull band counts lower error 1 sigma (cts_f_el)ctstat.errorfloate_ctsSSoft band counts lower error 1 sigma (cts_s_el)ctstat.errorfloatE_ctsSSoft band counts upper error 1 sigma (cts_s_eu)ctstat.error;stat.maxfloatctsHHard band counts (cts_h)ctphot.count;em.X-rayfloate_ctsHHard band counts lower error 1 sigma (cts_h_el)ctstat.errorfloatE_ctsHHard band counts upper error 1 sigma (cts_h_eu)ctstat.error;stat.maxfloatHRHR computed with BEHR (Park et al., 2006ApJ...652..610P) (HR)phot.flux;arith.ratiodoublebHRHR lower range computed with BEHR (Park et al., 2006ApJ...652..610P) (HR_rl)phot.flux;arith.ratiodoubleBHRHR upper computed with BEHR (Park et al., 2006ApJ...652..610P) (HR_ru)phot.flux;arith.ratiodoubleFluxFFull band flux [erg/s/cm2] (flux_f)mW.m**-2phot.flux;em.X-raydoubleb_FluxFFull band flux lower 90%cl range [erg/s/cm2] (flux_f_rl)mW.m**-2phot.flux;stat.mindoubleB_FluxFFull band flux upper 90%cl range [erg/s/cm2] (flux_f_ru)mW.m**-2phot.flux;stat.maxdoubleFluxSSoft band flux [erg/s/cm2] (flux_s)mW.m**-2phot.flux;em.X-raydoubleb_FluxSSoft band flux lower 90%cl range [erg/s/cm2] (flux_s_rl)mW.m**-2phot.flux;stat.mindoubleNHObscuring column density, [cm-2] (nh)cm**-2phys.columnDensitydoubleBgamma? Photon Index upper 90%cl range (gamma_ru)spect.indexdoublenullablefscatt? Scattering fraction (fscatt)stat.fit.paramdoublenullablezB_est redshift (z)src.redshiftdoublef_z[1/2] Flag: 1 = z-spec, 2= z-phot (z_flag)meta.codeintModelModel ID (model) (1)meta.id;stat.param;meta.modelledchar