J/ApJ/928/172ivo://CDS.VizieR/J/ApJ/928/172doi:10.26093/cds/vizier.19280172CDSPan Z.Jiang L.Fan X.Wu J.Yang J.2025-07-18T20:13:07Z2024-04-05T11:51:52ZCDS support team

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

cds-question@unistra.frquasarsvisible-astronomyspectroscopyredshiftedsurveyssloan-photometryabsolute-magnitudeultraviolet-astronomyWe present a well-designed sample of more than 1000 type 1 quasars at 3.5<z<5 and derive UV quasar luminosity functions (QLFs) in this redshift range. These quasars were selected using the Sloan Digital Sky Survey (SDSS) imaging data in the Stripe 82 and overlap regions with repeat imaging observations that are about 1mag fainter than the SDSS single-epoch data. The follow-up spectroscopic observations were conducted by the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS) as one of the BOSS ancillary programs. Reaching i~21.5mag, our sample bridges previous samples from brighter and deeper surveys. We use a 1/V_a_ method to derive binned QLFs at 3.6<z<4.0, 4.0<z<4.5, and 4.5<z<4.9 and then use a double power-law model to parameterize the QLFs. We also combine our data with literature QLFs to better constrain the QLFs across a much wider luminosity baseline. The faint- and bright-end slopes of the QLFs in this redshift range are around -1.7 and -3.7, respectively, with uncertainties from 0.2 to 0.3 to >0.5. The evolution of the QLFs from z~5 to 3.5 can be described by a pure density evolution model ({propto}10^kz^) with a parameter k similar to that at 5<z<7, suggesting a nearly uniform evolution of the quasar density at z=3.5-7.2022ApJ...928..172Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/928/172CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/241 : The 2dF QSO Redshift Survey (Croom+ 2004)II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006)J/ApJ/710/1498 : QSO luminosity function at z~4 (Glikman+, 2010)J/ApJ/743/125 : Likelihood method for QSOs selection (Kirkpatrick+, 2011)J/ApJ/755/169 : 3<z<5 QSO luminosity function in the COSMOS (Masters+, 2012)J/ApJS/199/3 : The quasars MMT-BOSS pilot survey (Ross+, 2012)J/ApJ/746/169 : Luminosity function of broad-line quasars (Shen+, 2012)J/ApJ/768/105 : z~5 QSO LF from SDSS Stripe 82 (McGreer+, 2013)J/ApJ/773/14 : BOSS: quasar luminosity function (Ross+, 2013)J/ApJ/794/120 : Sloan Digital Sky Survey coadd. Stripe 82 (Annis+, 2014)J/ApJ/819/24 : z>4.5 QSOs with SDSS and WISE. I. Opt. spectra (Wang+, 2016)J/ApJ/829/33 : Luminous of high-z QSOs with SDSS and WISE. II (Yang+, 2016)J/AJ/155/131 : z~5 QSO luminosity function from the CFHTLS (McGreer+, 2018)J/MNRAS/488/1035 : AGN UV luminosity function (Kulkarni+, 2019)J/ApJ/871/258 : ELQS in SDSS. III. Full ELQS quasar cat. (Schindler+, 2019)J/ApJS/254/6 : Finding QSOs behind the Galactic Plane. I. (Fu+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/928/172https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/928/172http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/928/172https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/928/172https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/928/172http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/928/172GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/928/172/table3 (High-redshift quasar catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/928/172/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/928/172/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/928/172/table3?GETtext/xml+votable180.050000true157.24908743.7823580.0055555555555555565/2114 4438 4501 4506 6/0 4177 4189 4215 4356 4371 4378-4379 4382 4384 4390 4398-4399 4406 4426 4431 4434 4439 4442 4449 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9810 9816 9818-9819 9822-9823 9833 9841 9843 9847 9854-9856 9859-9860 9865 9869 9871 9874 9880 9900 9905 9912 9932 9940 9947 9957 9959-9960 9965 9971 9977 9984 9988 9990-9991 9995 9997 9999 10020 10034 10040 10113 10123 10127 10242 10254 10261 10265 10268 10284 10286 10293 10307 10321 10340 10349 10351 10353 10390 10396 10421 10453 10460 10500 10507 10517 10520 10522 10533 10558 10570 10573 10575 10578-10579 10587 10607 10615-10616 10629 10656 10678 10699 10707-10708 10796 10809 10812 10858 10872 10907 11038 11103 11120 11162 11174 11263 11265 11276 11306 11316 11331 11339 11361 11368 11379 11387 11390 11392 11428 11446 11451 11461-11463 11467-11468 11473 11476 11492-11493 11497-11498 11502 11507 11564 11566 11779 11783 11798 11812 11816 11827 11906 11913 11944 11946 11950 17406-17407 17662 17725-17727 17742-17743 17745-17746 17750-17751 17756 17758 17763 17765 17769-17771 17774 17777 17805 17807 17809-17813 17817-17819 17821 17826 17828-17829 17832 17834 17836-17837 17840 17842 17856 17982-17983 17997 18009-18012 18017-18019 18022 18032 18062-18063 18065-18067 18069 18071-18074 18076-18077 18083-18084 18087-18088 18090-18092 18176 18685-18687 18765-18766 18769-18770 18774-18778 18782 18785 18787 18790-18791 18793 18801-18802 18831 18835-18837 18839 18842-18846 18850-18851 18853 18857 18859-18860 18862 18865-18866 18880 18882 19021-19022 19027-19028 19030-19033 19036-19038 19044-19046 19056-19057 19093 19200 19202 19456-19458 23138 23145 23188 23191-23193 23203 23206 23209 23211-23212 25887 25938-25940 25943 25947 25950 25954 25966 25968-25970 25979 25987 25995 26007 26014 26018-26020 26023 26025 26027 26029 26062 26075 26078 26080 26082 26094 26096 26107 26164 26167 26173-26174 26187 26206 26280 26306 26310 26328 26330 26350 26352 26355-26356 26358 26361 26383-26384 26386-26387 26389 26392-26393 26400 26416-26417 26420-26422 26425 26427 26431 26439 26455 26471 26494 26497 26516-26517 26519 26523 26525 26541 26568-26569 26583 26621 26871 26878 26947 26950 26956 26959 26969-26970 26974 26978 26981 26984 26990 26993 27013 27022-27023 27027-27028 27031 27033 27035-27037 27043 27052 27063 27066 27085 27090 27098 27106 27130 27206 27214 27217 27221 27223 27229 27236 27246 27257 27333 27344 27350-27351 27353 27355-27356 27376 27379 27384 27403 27436 27452 27459 27465 27469 27481 27485 27488 27499-27500 27506 27517 27520 27526-27527 27542-27543 27557-27558 27567 27571 27573 27576 27583-27584 27590-27591 27593 27607 27610 27619 27647 27659 27681 27684 27696 27699 27702-27703 27708 27711 27752-27753 27807 27828 27831 27858 27862 27887 27899 27902 27926 27933 27947 27981 27986 27998 28008 28013 28041 28067 28082 28103 28154 28178 28182 28194 28205 28210 28213 28225 28228 28286 28295 28300 28325 28329 28342 28382 28391 28394-28395 28417 28500 28519 28528 28543 28557 28601-28602 28631 28634 28639 31373 31375 31384 31387 31399 31403 31408-31409 31413 31417 31420 31423 31437 31443 31449 31452 31454 31460 31464 31468 31470 31472 31474 31478 31481-31482 31485 31626-31627 31630-31631 31652 31655-31657 31659 31665-31666 31668 31670 31673 31676-31677 31714 31722 31727 31738 36862https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/928/172?format=asciiUVOpticaldefaultJ/ApJ/928/172/table3High-redshift quasar cataloge_imag[0.003/0.2] Uncertainty in imagmagstat.error;phot.mag;em.opt.IfloatSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS identifier (HHMMSS.ss+DDMMSS.s; J2000)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000[-3/68] Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainz[3.16/5.4] Redshiftsrc.redshiftdoublef_z[0/1]? Flag on z (1)meta.code;src.redshiftintnullableRegionRegion identifier (2)meta.id;obs.fieldcharIndex[-2.94/0.9] Continuum power-law indexspect.indexdoublee_Index[0.044/0.7]? Uncertainty in Indexstat.error;spect.indexdoublenullableM1450[-28/-23.59] Absolute magnitude at 1450{AA}magphys.magAbs;em.UVdoubleumag[21.6/30] SDSS coadded u band AB magnitude; corrected for the extinctionmagphot.mag;em.opt.Ufloate_umag[0.1/4.8] Uncertainty in umagmagstat.error;phot.mag;em.opt.Ufloatgmag[19/30] SDSS coadded g band AB magnitude corrected for the extinctionmagphot.mag;em.opt.Bfloate_gmag[0.004/4.4] Uncertainty in gmagmagstat.error;phot.mag;em.opt.Bfloatrmag[17.7/23.7] SDSS coadded r band AB magnitude corrected for the extinctionmagphot.mag;em.opt.Rfloate_rmag[0.002/0.3] Uncertainty in rmagmagstat.error;phot.mag;em.opt.Rfloatimag[17.8/21.5] SDSS coadded i band AB magnitude corrected for the extinctionmagphot.mag;em.opt.Ifloatzmag[17.79/22] SDSS coadded z band AB magnitude corrected for the extinctionmagphot.mag;em.opt.Ifloate_zmag[0.009/0.4] Uncertainty in zmagmagstat.error;phot.mag;em.opt.IfloatDR7QDisplay data from the SDSS-DR7 quasar catalog (VII/260)meta.ref.urlintnullableSloanDisplay the online SDSS-DR17 data for the nearest objectmeta.ref.urlcharJ/ApJ/928/172/fig6Binned quasar luminosity functions (QLFs) at 3.6<z<4.9 derived from our samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRegionRegion identifier (1)meta.id;obs.fieldcharz[1/3] Redshift range (2)src.redshiftintMedmag[-26.9/-24.2] Median absolute magnitude at 1450{AA} (M_1450_) magnitudemagphys.magAbs;stat.median;em.UVfloatMeanmag[-27.2/-24.2] Mean M_1450_ magnitudemagphys.magAbs;stat.mean;em.UVfloatmagerr[0.15/0.5] Uncertainty in the median/mean magnitudesmagstat.error;phys.magAbs;em.UVfloatDen[5/278] Densityphys.luminosity;phys.densityfloate_Den[2.7/74] Uncertainty in Denstat.error;phys.luminosity;phys.densityfloatN[4/108] Number of sources in the magnitude binmeta.numberintNcor[4.6/717] Number of source after incompleteness correctionmeta.numberfloat