J/ApJS/265/29ivo://CDS.VizieR/J/ApJS/265/29doi:10.26093/cds/vizier.22650029CDSBanados E.Schindler J.-T.Venemans B.P.Connor T.Decarli R.,Farina E.P.Mazzucchelli C.Meyer R.A.Stern D.Walter F.Fan X.,Hennawi J.F.Khusanova Y.Morrell N.Nanni R.Noirot G.Pensabene A.,Rix H.-W.Simon J.Verdoes Kleijn G.A.Xie Z.-L.Yang D.-M.,Connor A.2024-09-06T20:14:37Z2023-06-26T08:32:24ZCDS support team

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

cds-question@unistra.frquasarsvisible-astronomyspectroscopyredshiftedinfrared-photometrybroad-band-photometrysurveysThe identification of bright quasars at z>~6 enables detailed studies of supermassive black holes, massive galaxies, structure formation, and the state of the intergalactic medium within the first billion years after the Big Bang. We present the spectroscopic confirmation of 55 quasars at redshifts 5.6<z<6.5 and UV magnitudes -24.5<M_1450_{<}-28.5 identified in the optical Pan-STARRS1 and near-IR VIKING surveys (48 and 7, respectively). Five of these quasars have independently been discovered in other studies. The quasar sample shows an extensive range of physical properties, including 17 objects with weak emission lines, 10 broad absorption line quasars, and 5 objects with strong radio emission (radio-loud quasars). There are also a few notable sources in the sample, including a blazar candidate at z=6.23, a likely gravitationally lensed quasar at z=6.41, and a z=5.84 quasar in the outskirts of the nearby (D~3Mpc) spiral galaxy M81. The blazar candidate remains undetected in NOEMA observations of the [CII] and underlying emission, implying a star formation rate <30-70M_{sun}_/yr. A significant fraction of the quasars presented here lies at the foundation of the first measurement of the z~6 quasar luminosity function from Pan-STARRS1 (introduced in a companion paper). These quasars will enable further studies of the high-redshift quasar population with current and future facilities.2023ApJS..265...29Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/265/29CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)II/359 : The VISTA Hemisphere Survey (VHS) catalog DR4.1 (McMahon+, 2013)II/343 : VIKING catalogue data release 2 (Edge+, 2016)I/337 : Gaia DR1 (Gaia Collaboration, 2016)II/347 : KiDS-ESO-DR3 multi-band source catalog (de Jong+, 2017)II/367 : The VISTA Hemisphere Survey (VHS) catalog DR5 (McMahon+, 2020)II/371 : The Dark Energy Survey (DES): Data Release 2 (Abbott+, 2021)VII/292 : DESI Legacy Imaging Surveys DR8 (Duncan, 2022)J/ApJS/227/11 : PS1 z>5.6 quasars follow-up (Banados+, 2016)J/ApJ/818/105 : CNSS pilot survey (Mooley+, 2016)J/A+A/585/A87 : Quasar composite made from bright QSOs (Selsing+, 2016)J/A+A/598/A78 : The GMRT 150MHz all-sky radio survey (Intema+, 2017)J/ApJ/887/196 : REQUIEM survey. I. Ly{alpha} halos around QSOs (Farina+, 2019)J/MNRAS/487/3305 : Broad-line velocity shifts in 1.5<z<7.5 QSOs (Meyer+, 2019)J/ApJ/873/35 : Gemini GNIRS NIR sp. of 50 QSOs at z>~5.7 (Shen+, 2019)J/A+A/624/A13 : KiDS DR3 QSO catalog (Nakoneczny+, 2019)J/A+A/630/A83 : 4.85 & 10.45GHz fluxes of SDSS-FIRST sources (Zajacek+, 2019)J/ApJ/905/51 : X-SHOOTER/ALMA QSOs at 5.78<z<7.54. I. NIR (Schindler+, 2020)J/A+A/656/A137 : 144MHz radio fluxes of z>5 quasars (Gloudemans+, 2021)J/other/PASA/38.58 : Rapid ASKAP Continuum Survey. II. RACS cat. (Hale+, 2021)J/A+A/668/A27 : 24 new radio-bright quasars spectra (Gloudemans+, 2022)J/ApJS/259/18 : SHELLQs. XVI. New quasars at 5.8<z<7 (Matsuoka+, 2022)J/A+A/667/A9 : Unveiling warm dense ISM phase in z>6 QSOs (Pensabene+, 2022)J/A+A/659/A1 : LOFAR Two-metre Sky Survey (LoTSS) DR2 (Shimwell+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/265/29https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/265/29http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/265/29https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/265/29https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/265/29http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/265/29GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/265/29/qsos (Properties of the quasars discovered in this work (Table 2) and photometry (Table 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/265/29/qsos?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/265/29/qsos?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/265/29/qsos?GETtext/xml+votable180.050000true0.041625-4.27390280.0055555555555555566/4620 4831 5369 5605 6094 7550 7606 8384 8948 9102 9502 9560 10627 11040 11176 15086 15251 16005 16494 16554 16641 16896 17153 17392 17542 18665 19472 19549 21942 22609 22643 23304 25529 25691 26069 26165 26650 26973 27970 28270 28561 29972 29977 31405 35292 36272 36455 36532 36553 36858 40316 40775 44684 46905 46983https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/265/29?format=asciiOpticalInfrareddefaultJ/ApJS/265/29/qsosProperties of the quasars discovered in this work (Table 2) and photometry (Table 3)NspNumber of spectroscopic observations for this quasar (link to Table 1)meta.numberintnullablee_Kmag[0.03/0.3]? Uncertainty in Kmagstat.errorfloatnullabler_Kmag[13/25]? Telescope reference source for Kmag (4)meta.ref;pos.frameintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasar name as in Table 1 and in VIKING+KiDS catalogs; column added by CDSmeta.id;meta.maincharIDQuasar abbreviated identifier (PDDD+DD or JHHMM+DDMM)meta.idcharprimaryRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainz[5.6/6.41] Spectroscopic redshiftsrc.redshiftfloatn_zMethod of determining z (1)meta.notecharr_z[1/4] Reference for z (2)meta.ref;pos.frameint1450mag[18.7/21.8] Apparent rest-frame 1450{AA} magnitudemagphot.magfloat1450Mag[-28/-24.8] Absolute rest-frame 1450{AA} magnitudemagphys.magAbsfloat2500mag[19.4/22.41] Apparent rest-frame 2500{AA} magnitudemagphot.magfloatBestBest template identifiermeta.id;meta.modelledcharNoteAdditional note(s)meta.notecharl_gP1magThe 3{sigma} limit flag on gP1magmeta.code.errorchargP1mag[22.5/24.24]? Pan-STARRS1 g band magnitude (3)magphot.mag;em.opt.Bfloatnullablel_rP1magThe 3{sigma} limit flag on rP1magmeta.code.errorcharrP1mag[22.73/24.03]? Pan-STARRS1 r band magnitude (3)magphot.mag;em.opt.Rfloatnullablee_rP1mag[0.19/0.31]? Uncertainty in rP1magmagstat.error;phot.magfloatnullablel_iP1magThe 3{sigma} limit flag on iP1magmeta.code.errorchariP1mag[21.87/24.5] Pan-STARRS1 i band magnitude (3)magphot.mag;em.opt.Ifloate_iP1mag[0.06/0.35]? Uncertainty in iP1magmagstat.error;phot.magfloatnullablezP1mag[19.57/21.59]? Pan-STARRS1 z band magnitude (3)magphot.mag;em.opt.Ifloatnullablee_zP1mag[0.02/0.18]? Uncertainty in zP1magmagstat.error;phot.magfloatnullableyP1mag[19.28/21.81]? Pan-STARRS1 y band magnitude (3)magphot.mag;em.IR.Jfloatnullablee_yP1mag[0.04/0.29]? Uncertainty in yP1magmagstat.error;phot.magfloatnullablel_ImagThe 3{sigma} limit flag on Imagmeta.code.errorcharImag[21.53/24.41]? The I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.03/0.36]? Uncertainty in Imagmagstat.error;phot.magfloatnullabler_Imag[1/19]? Telescope reference source for Imag (4)meta.ref;pos.frameintnullableZmag[19.9/22.12]? The Z band magnitudemagphot.mag;em.opt.Ifloatnullablee_Zmag[0.01/0.14]? Uncertainty in Zmagmagstat.error;phot.magfloatnullabler_Zmag[6/23]? Telescope reference source for Zmag (4)meta.refintnullableYmag[19.28/21.79]? The Y band magnitudemagphot.mag;em.IR.Jfloatnullablee_Ymag[0.03/0.26]? Uncertainty in Ymagmagstat.error;phot.magfloatnullabler_Ymag[16/25]? Telescope reference source for Ymag (4)meta.ref;pos.frameintnullableJmag[19.23/21.94]? The J band magnitudephot.mag;em.IR.Jfloatnullablee_Jmag[0.03/0.33]? Uncertainty in Jmagstat.errorfloatnullabler_Jmag[9/25]? Telescope reference source for Jmag (4)meta.ref;pos.frameintnullableHmag[19.02/21.53]? The H band magnitudephot.mag;em.IR.Hfloatnullablee_Hmag[0.05/0.35]? Uncertainty in Hmagstat.errorfloatnullabler_Hmag[10/25]? Telescope reference source for Hmag (4)meta.ref;pos.frameintnullableKmag[18.68/21.29]? The K band magnitudephot.mag;em.IR.KfloatnullablePS1Display data from PS1 (II/349) within 0.5"meta.ref.urlintnullableVIKINGDisplay data from VIKING DR2 (II/343) within 0.5"meta.ref.urlintnullableKiDSDisplay data from KiDS DR3 (II/347) within 1"meta.ref.urlintnullableVHSDisplay data from VHS DR5 (II/367) within 0.5"meta.ref.urlintnullableDESDisplay data from DES DR2 (II/371) within 0.5"meta.ref.urlnullableDESIDisplay data from DESI DR8 (VII/292) within 0.5"meta.ref.urlnullableSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/ApJS/265/29/table1Discovery spectroscopic observations of the new quasars presented in this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateObservation date (UT)time.epoch;obsnullableIDQuasar abbreviated identifier (PDDD+DD or JHHMM+DDMM) as in other tables; column added by CDSmeta.idcharQSOPSO designation (PSO JDDD.dddd+DD.dddd) or VIKING designation (VIK JHHMM+DDMM)meta.id;meta.maincharDay2? Second day of observationdtime.epochintnullableInstTelescope / InstrumentinstrcharExp[300/9000] Exposure timestime.duration;obs.exposureintSlitSlit widtharcsecspect.line.widthcharQLF?True or Falsemeta.codechar