J/A+A/685/A25ivo://CDS.VizieR/J/A+A/685/A25doi:10.26093/cds/vizier.36850025CDSAndika I.T.Jahnke K.Onoue M.Silverman J.D.Fitriana I.K.,Bongiorno A.Brinch M.Casey C.M.Faisst A.Gillman S.Gozaliasl G.,Hayward C.C.Hirschmann M.Kocevski D.Koekemoer A.M.Kokorev V.,Lambrides E.Lee M.M.Rich R.M.Trakhtenbrot B.Urry C.M.,Wilkins S.M.Vijayan A.P.2024-11-07T20:03:21Z2024-04-30T12:42:45ZCDS support team

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

cds-question@unistra.frblack-holesquasarsspectral-energy-distributioninfrared-astronomyvisible-astronomyWe report the identification of 64 new candidates of compact galaxies, potentially hosting faint quasars with bolometric luminosities of Lbol=10^43^-10^46^erg/s, residing in the reionization epoch within the redshift range of 6<~z<~8. These candidates were selected by harnessing the rich multiband datasets provided by the emerging JWST-driven extragalactic surveys, focusing on COSMOS-Web, as well as JADES, UNCOVER, CEERS, and PRIMER. Our search strategy includes two stages: applying stringent photometric cuts to catalog-level data and detailed spectral energy distribution fitting. These techniques effectively isolate the quasar candidates while mitigating contamination from low-redshift interlopers, such as brown dwarfs and nearby galaxies. The selected candidates indicate physical traits compatible with low-luminosity active galactic nuclei, likely hosting ~10^5^-10^7^M_{sun}_ supermassive black holes (SMBHs) living in galaxies with stellar masses of ~10^8^-10^10^M_{sun}_. The SMBHs selected in this study, on average, exhibit an elevated mass compared to their hosts, with the mass ratio distribution slightly higher than those of galaxies in the local Universe. As with other high-z studies, this is at least in part due to the selection method for these quasars. An extensive Monte Carlo analysis provides compelling evidence that heavy black hole seeds from the direct collapse scenario appear to be the preferred pathway to mature this specific subset of SMBHs by z~7. Notably, most of the selected candidates might have emerged from seeds with masses of ~10^5^M_{sun}_, assuming a thin disk accretion with an average Eddington ratio of f_Edd_=0.6+/-0.3 and a radiative efficiency of epsilon=0.2+/-0.1. This work underscores the significance of further spectroscopic observations, as the quasar candidates presented here offer exceptional opportunities to delve into the nature of the earliest galaxies and SMBHs that formed during cosmic infancy.2024A&A...685A..25Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/685/A25CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/685/A25https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/685/A25http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/685/A25https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/685/A25https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/685/A25http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/685/A25GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/685/A25/tableb1 (Photometric properties and spectral energy distributions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/685/A25/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/685/A25/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/685/A25/tableb1?GETtext/xml+votable180.050000true149.7509929637182.150914641677380.0055555555555555566/11252 11425 16486 17679 17690 27256 27258 359351.0590977079788917e-19 4.9761815603361e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/685/A25?format=asciiOpticalInfrareddefaultJ/A+A/685/A25/tableb1Photometric properties and spectral energy distributionsRAJ2000Right Ascension (J2000) (ra)degpos.eq.ra;meta.maine_FF435W? Total flux error based on the F435W photometry (e_f435w)nJystat.errordoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDEJ2000Declination (J2000) (dec)degpos.eq.dec;meta.mainFF090W? Total flux based on the F090W photometry (f_f090w)nJyphot.mag;em.opt.Idoublenullablee_FF090W? Total flux error based on the F090W photometry (e_f090w)nJystat.errordoublenullableFF105W? Total flux based on the F105W photometry (f_f105w)nJyphot.mag;em.IR.Jdoublenullablee_FF105W? Total flux error based on the F105W photometry (e_f105w)nJystat.errordoublenullableFF110W? Total flux based on the F110W photometry (f_f110w)nJyphot.mag;em.IR.HdoublenullableMBHLower limit black hole mass (log) (M_BH)solMassphys.massdoublee_FF110W? Total flux error based on the F110W photometry (e_f110w)nJystat.errordoublenullableFF115WTotal flux based on the F115W photometry (f_f115w)nJyphot.mag;em.IR.Hdoublee_FF115WTotal flux error based on the F115W photometry (e_f115w)nJystat.errordoubleFF125W? Total flux based on the F125W photometry (f_f125w)nJyphot.mag;em.IR.Hdoublenullablee_FF125W? Total flux error based on the F125W photometry (e_f125w)nJystat.errordoublenullableFF140W? Total flux based on the F140W photometry (f_f140w)nJyphot.mag;em.IR.Hdoublenullablee_FF140W? Total flux error based on the F140W photometry (e_f140w)nJystat.errordoublenullableFF150WTotal flux based on the F150W photometry (f_f150w)nJyphot.mag;em.IR.Hdoublee_FF150WTotal flux error based on the F150W photometry (e_f150w)nJystat.errordoubleFF160W? Total flux based on the F160W photometry (f_f160w)nJyphot.mag;em.IR.Hdoublenullablee_FF160W? Total flux error based on the F160W photometry (e_f160w)nJystat.errordoublenullableFF1800W? Total flux based on the F1800W photometry (f_f1800w)nJyphot.flux.density;em.IR.8-15umdoublenullablee_FF1800W[]? Total flux error based on the F1800W photometry (e_f1800w)nJystat.errordoublenullableFF182M? Total flux based on the F182M photometry (f_f182m)nJyphot.flux.density;em.IRdoublenullablee_FF182M? Total flux error based on the F182M photometry (e_f182m)nJystat.errordoublenullableFF200W? Total flux based on the F200W photometry (f_f200w)nJyphot.mag;em.UV.200-300nmdoublenullablee_FF200W? Total flux error based on the F200W photometry (e_f200w)nJystat.errordoublenullableFF210M? Total flux based on the F210M photometry (f_f210m)nJyphot.flux.density;em.IRdoublenullablee_FF210M? Total flux error based on the F210M photometry (e_f210m)nJystat.errordoublenullableFF277W? Total flux based on the F277W photometry (f_f277w)nJyphot.mag;em.UV.200-300nmdoublenullablee_FF277W? Total flux error based on the F277W photometry (e_f277w)nJystat.errordoublenullableFF335M? Total flux based on the F335M photometry (f_f335m)nJyphot.flux.density;em.IRdoublenullablee_FF335M? Total flux error based on the F335M photometry (e_f335m)nJystat.errordoublenullableFF356W? Total flux based on the F356W photometry (f_f356w)nJyphot.mag;em.opt.Udoublenullablee_FF356W? Total flux error based on the F356W photometry (e_f356w)nJystat.errordoublenullableFF410M? Total flux based on the F410M photometry (f_f410m)nJyphot.flux.density;em.IRdoublenullablee_FF410M? Total flux error based on the F410M photometry (e_f410m)nJystat.errordoublenullableFF430M? Total flux based on the F430M photometry (f_f430m)nJyphot.flux.densitydoublenullablee_FF430M? Total flux error based on the F430M photometry (e_f430m)nJystat.errordoublenullableFF435W? Total flux based on the F435W photometry (f_f435w)nJyphot.mag;em.opt.BdoublenullableFF444WTotal flux based on the F444W photometry (f_f444w)nJyphot.mag;em.opt.Bdoublee_FF444WTotal flux error based on the F444W photometry (e_f444w)nJystat.errordoubleFF460M? Total flux based on the F460M photometry (f_f460m)nJyphot.flux.density;em.IRdoublenullablee_FF460M? Total flux error based on the F460M photometry (e_f460m)nJystat.errordoublenullableFF475W? Total flux based on the F475W photometry (f_f475w)nJyphot.mag;em.opt.Bdoublenullablee_FF475W? Total flux error based on the F475W photometry (e_f475w)nJystat.errordoublenullableFF480M? Total flux based on the F480M photometry (f_f480m)nJyphot.flux.density;em.IRdoublenullablee_FF480M? Total flux error based on the F480M photometry (e_f480m)nJystat.errordoublenullableFF606W? Total flux based on the F606W photometry (f_f606w)nJyphot.mag;em.opt.Rdoublenullablee_FF606W[]? Total flux error based on the F606W photometry (e_f606w)nJystat.errordoublenullableFF770W? Total flux based on the F770W photometry (f_f770w)nJyphot.mag;em.opt.Rdoublenullablee_FF770W? Total flux error based on the F770W photometry (e_f770w)nJystat.errordoublenullableFF775W? Total flux based on the F775W photometry (f_f775w)nJyphot.mag;em.opt.Rdoublenullablee_FF775W? Total flux error based on the F775W photometry (e_f775w)nJystat.errordoublenullableFF814W? Total flux based on the F814W photometry (f_f814w)nJyphot.mag;em.opt.Idoublenullablee_FF814W? Total flux error based on the F814W photometry (e_f814w)nJystat.errordoublenullableFF850LP? Total flux based on the F850LP photometry (f_f850lp)nJyphot.mag;em.opt.Idoublenullablee_FF850LP? Total flux error based on the F850LP photometry (e_f850lp)nJystat.errordoublenullableFHSC-g? Total flux based on the HSC-g photometry (f_hsc-g)nJyphot.mag;em.opt.Bdoublenullablee_FHSC-g? Total flux error based on the HSC-g photometry (e_hsc-g)nJystat.errordoublenullableFHSC-i? Total flux based on the HSC-i photometry (f_hsc-i)nJyphot.mag;em.opt.Idoublenullablee_FHSC-i? Total flux error based on the HSC-i photometry (e_hsc-i)nJystat.errordoublenullableFHSC-r? Total flux based on the HSC-r photometry (f_hsc-r)nJyphot.mag;em.opt.Rdoublenullablee_FHSC-r? Total flux error based on the HSC-r photometry (e_hsc-r)nJystat.errordoublenullableFHSC-y? Total flux based on the HSC-y photometry (f_hsc-y)nJyphot.mag;em.IR.Jdoublenullablee_FHSC-y? Total flux error based on the HSC-y photometry (e_hsc-y)nJystat.errordoublenullableFHSC-z? Total flux based on the HSC-z photometry (f_hsc-z)nJyphot.mag;em.opt.Idoublenullablee_FHSC-z? Total flux error based on the HSC-z photometry (e_hsc-z)nJystat.errordoublenullableFHST-F814W? Total flux based on the HST-F814W photometry (f_hst-f814w)nJyphot.mag;em.opt.Idoublenullablee_FHST-F814W? Total flux error based on the HST-F814W photometry (e_hst-f814w)nJystat.errordoublenullableFUVISTA-H? Total flux based on the UVISTA-H photometry (f_uvista-h)nJyphot.flux.density;em.IR.Hdoublenullablee_FUVISTA-H? Total flux error based on the UVISTA-H photometry (e_uvista-h)nJystat.errordoublenullableFUVISTA-J? Total flux based on the UVISTA-J photometry (f_uvista-j)nJyphot.flux.density;em.IR.Jdoublenullablee_FUVISTA-J? Total flux error based on the UVISTA-J photometry (e_uvista-j)nJystat.errordoublenullableFUVISTA-Ks? Total flux based on the UVISTA-Ks photometry (f_uvista-ks)nJyphot.mag;em.IR.Kdoublenullablee_FUVISTA-Ks? Total flux error based on the UVISTA-Ks photometry (e_uvista-ks)nJystat.errordoublenullableFUVISTA-Y? Total flux based on the UVISTA-Y photometry (f_uvista-y)nJyphot.mag;em.IR.Jdoublenullablee_FUVISTA-Y? Total flux error based on the UVISTA-Y photometry (e_uvista-y)nJystat.errordoublenullableSNRF090W? Signal-to-noise ratio based on the F090W photometry (snr_f090w)stat.snrdoublenullableSNRF105W? Signal-to-noise ratio based on the F105W photometry (snr_f105w)stat.snrdoublenullableSNRF110W? Signal-to-noise ratio based on the F110W photometry (snr_f110w)stat.snrdoublenullableSNRF115WSignal-to-noise ratio based on the F115W photometry (snr_f115w)stat.snrdoubleSNRF125W? Signal-to-noise ratio based on the F125W photometry (snr_f125w)stat.snrdoublenullableSNRF140W? Signal-to-noise ratio based on the F140W photometry (snr_f140w)stat.snrdoublenullableSNRF150WSignal-to-noise ratio based on the F150W photometry (snr_f150w)stat.snrdoubleSNRF160W? Signal-to-noise ratio based on the F160W photometry (snr_f160w)stat.snrdoublenullableSNRF1800W? Signal-to-noise ratio based on the F1800W photometry (snr_f1800w)stat.snrdoublenullableSNRF182M? Signal-to-noise ratio based on the F182M photometry (snr_f182m)stat.snrdoublenullableSNRF200W? Signal-to-noise ratio based on the F200W photometry (snr_f200w)stat.snrdoublenullableSNRF210M? Signal-to-noise ratio based on the F210M photometry (snr_f210m)stat.snrdoublenullableSNRF277W? Signal-to-noise ratio based on the F277W photometry (snr_f277w)stat.snrdoublenullableSNRF335M? Signal-to-noise ratio based on the F335M photometry (snr_f335m)stat.snrdoublenullableSNRF356W? Signal-to-noise ratio based on the F356W photometry (snr_f356w)stat.snrdoublenullableSNRF410M? Signal-to-noise ratio based on the F410M photometry (snr_f410m)stat.snrdoublenullableSNRF430M? Signal-to-noise ratio based on the F430M photometry (snr_f430m)stat.snrdoublenullableSNRF435W? Signal-to-noise ratio based on the F435W photometry (snr_f435w)stat.snrdoublenullableSNRF444WSignal-to-noise ratio based on the F444w photometry (snr_f444w)stat.snrdoubleSNRF460M? Signal-to-noise ratio based on the F460M photometry (snr_f460m)stat.snrdoublenullableSNRF475W? Signal-to-noise ratio based on the F475W photometry (snr_f475w)stat.snrdoublenullableSNRF480M? Signal-to-noise ratio based on the F480M photometry (snr_f480m)stat.snrdoublenullableSNRF606W? Signal-to-noise ratio based on the F606W photometry (snr_f606w)stat.snrdoublenullableSNRF770W? Signal-to-noise ratio based on the F770W photometry (snr_f770w)stat.snrdoublenullableSNRF775W? Signal-to-noise ratio based on the F775W photometry (snr_f775w)stat.snrdoublenullableSNRF814W? Signal-to-noise ratio based on the F814W photometry (snr_f814w)stat.snrdoublenullableSNRF850LP? Signal-to-noise ratio based on the F850LP photometry (snr_f850lp)stat.snrdoublenullableSNRHSC-g? Signal-to-noise ratio based on the HSC-g photometry (snr_hsc-g)stat.snrdoublenullableSNRHSC-i? Signal-to-noise ratio based on the HSC-i photometry (snr_hsc-i)stat.snrdoublenullableSNRHSC-r? Signal-to-noise ratio based on the HSC-r photometry (snr_hsc-r)stat.snrdoublenullableSNRHSC-y? Signal-to-noise ratio based on the HSC-y photometry (snr_hsc-y)stat.snrdoublenullableSNRHSC-z? Signal-to-noise ratio based on the HSC-z photometry (snr_hsc-z)stat.snrdoublenullableSNRHST-f814W? Signal-to-noise ratio based on the HST-F814W photometry (snr_hst-f814w)stat.snrdoublenullableSNRUVISTA-H? Signal-to-noise ratio based on the UVISTA-H photometry (snr_uvista-h)stat.snrdoublenullableSNRUVISTA-J? Signal-to-noise ratio based on the UVISTA-J photometry (snr_uvista-j)stat.snrdoublenullableSNRUVISTA-Ks? Signal-to-noise ratio based on the UVISTA-Ks photometry (snr_uvista-ks)stat.snrdoublenullableSNRUVISTA-Y? Signal-to-noise ratio based on the UVISTA-Y photometry (snr_uvista-y)stat.snrdoublenullablechi2-galaxyNormalized chi- square for the best-fit eazy-py galaxy model (chired_galaxy)stat.fit.chi2doublechi2-lzg? Normalized chi- square for the best-fit eazy-py low-z galaxy model (chired_lzg)stat.fit.chi2doublenullablechi2-quasarNormalized chi- square for the best-fit eazy-py quasar model (chired_quasar)stat.fit.chi2doublechi2-starNormalized chi- square for the best-fit eazy-py star model (chired_star)stat.fit.chi2doublezph-galaxyPhotometric redshift based on the best-fit galaxy template (z_phot_galaxy)src.redshift.photdoublee_zph-galaxyError of the galaxy model photometric redshift (z_photerr_galaxy)stat.errordoublezph-lzgPhotometric redshift based on the best-fit low-z galaxy template (z_phot_lzg)src.redshift.photdoublee_zph-lzgError of the low-z galaxy model photometric redshift (z_photerr_lzg)stat.errordoublezph-quasarPhotometric redshift based on the best-fit quasar template (z_phot_quasar)src.redshift.photdoublee_zph-quasarError of the quasar model photometric redshift (z_photerr_quasar)stat.errordoublezspSpectroscopic redshift compiled from literature, missing data are marked with -1 (z_spec)src.redshiftdoublelogLbolBolometric luminosity of the AGN SED component from the best-fit CIGALE model (log) (logL_bol)log(1e-07W)phys.luminositydoublee_logLbolError of the AGN bolometric luminosity (log) (logL_bol_err)log(1e-07W)stat.errordoubleagnfracAGNFraction of the AGN emission computed using least- square method (agn.fracAGN)meta.numberfloate_agnfracAGNError of the AGN emission fraction (agn.fracAGN_err)stat.errordoubleatt.VB90Attenuation level in V filter (attenuation.V_B90)magphys.absorptiondoublee_att.VB90Error of the attenuation level (attenuation.V_B90_err)magstat.errordoublelog(SFR100Myr)Star formation rate averaged over 100 Myrs (log) (sfh.sfr100Myrs_log)log(solMass.yr**-1)phys.SFRdoublee_log(SFR100Myr)Error of the star formation rate (log) (sfh.sfr100Myrs_log_err)log(solMass.yr**-1)stat.errordoublelogstellarMstarTotal stellar mass (log) (stellar.m_star_log)log(solMass)phys.massdoublee_logstellarMstarError of the total stellar mass (log) (stellar.m_star_log_err)log(solMass)stat.errordoubleuniv.redshiftPhotometric redshift based on the best-fit CIGALE SED model (universe.redshift)src.redshift.photdoublee_univ.redshiftError of the photometric redshift based on the best-fit CIGALE SED model (universe.redshift_err)stat.errordoubleNameName (name)meta.id;meta.mainchar