J/A+A/656/A117ivo://CDS.VizieR/J/A+A/656/A117doi:10.26093/cds/vizier.36560117CDSMarchesi S.Mignoli M.Gilli R.Peca A.Bolzonella M.Nanni R.,Annunziatella M.Balmaverde B.Brusa M.Calura F.Cassara L.P.,Chiaberge M.Comastri A.Cusano F.D'Amato Q.Iwasawa K.Lanzuisi G.,Marchesini D.Morishita T.Prandoni I.Rossi A.Tozzi P.Vignali C.,Vito F.Zamorani G.Norman C.2023-02-04T18:52:27Z2021-12-09T09:33:55ZCDS support team

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

cds-question@unistra.frquasarsactive-galactic-nucleix-ray-sourcesWe publicly release the spectroscopic and photometric redshift catalog of the sources detected with Chandra in the field of the z=6.3 quasar SDSS J1030+0525. This is currently the fifth deepest X-ray field, and reaches a 0.5-2keV flux limit f_0.5-2_=6x10^-17^erg/s/cm^2^. By using two independent methods, we measure a photometric redshift for 243 objects, while 123 (51%) sources also have a spectroscopic redshift, 110 of which coming from an INAF-Large Binocular Telescope (LBT) Strategic Program. We use the spectroscopic redshifts to determine the quality of the photometric ones, and find it in agreement with that of other X-ray surveys which used a similar number of photometric data-points. In particular, we measure a sample normalized median absolute deviation sigma_NMAD_=1.48xmedia(||z_phot_-z_spec_||/(1+z_spec_)=0.065. We use these new spectroscopic and photometric redshifts to study the properties of the Chandra J1030 field. We observe several peaks in our spectroscopic redshift distribution between z=0.15 and z=1.5, and find that the sources in each peak are often distributed across the whole Chandra field of view. This evidence confirms that X-ray selected AGN can efficiently track large-scale structures over physical scales of several Mpc. Finally, we computed the Chandra J1030 z>3 number counts: while the spectroscopic completeness at high-redshift of our sample is limited, our results point towards a potential source excess at z>=4, which we plan to either confirm or reject in the near future with dedicated spectroscopic campaigns.2021A&A...656A.117Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/656/A117CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/637/A52 : Deep Chandra survey in J1030+0524 field (Nanni+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/656/A117https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/656/A117http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/656/A117https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/656/A117https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/656/A117http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/656/A117GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/656/A117/table1 (Chandra J1030 multi-wavelength catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/656/A117/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/656/A117/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/656/A117/table1?GETtext/xml+votable180.050000true157.6045.31927780.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/656/A1176/274401.398457827073138e-19 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/656/A117?format=asciiX-raydefaultJ/A+A/656/A117/splistList of fits spectraspShow the spectrummeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXIDChandra J1030 ID (from Nanni et al., 2020A&A...637A..52N, Cat. J/A+A/637/A52)meta.id;meta.mainintFileNameName of the spectrum fits file in subdirectory spmeta.id;meta.fitscharJ/A+A/656/A117/table1Chandra J1030 multi-wavelength catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintspindicates spectrummeta.ref.urlcharXIDChandra J1030 ID (from Nanni et al., 2020A&A...637A..52N, Cat. J/A+A/637/A52) (XID)meta.id;meta.mainintprimaryNbandNumber of bands in which the source is detected (N_band)meta.numberintF0.5-20.5-2keV band flux (Flux_05-2)phot.flux;em.X-rayfloatF2-72-7keV band flux (Flux_2-7)phot.flux;em.X-rayfloatHRHardness ratio (from Nanni et al., 2020, Cat. J/A+A/637/A52) (HR)phot.flux;arith.ratiofloatb_HRHardness ratio lower boundary (from Nanni et al. 2020, Cat. Cat. J/A+A/637/A52) (HR_lo)phot.flux;stat.minfloatB_HRHardness ratio upper boundary (from Nanni et al. 2020, Cat. Cat. J/A+A/637/A52) (HR_up)phot.flux;stat.maxfloatlogNH? Hydrogen column density (logNH)phys.columnDensityfloatnullableb_logNH? Hydrogen column density lower boundary (logNH_lo)phys.columnDensity;stat.minfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharRAJ2000Right Ascension, X-ray source (J2000) (RA_CORR_X)pos.eq.ra;meta.mainDEJ2000Declination, X-ray source (J2000) (DEC_CORR_X)pos.eq.dec;meta.mainRAORight Ascension, optical/IR counterpart (J2000) (RA_cpt)meta.id.assocDEODeclination, optical/IR counterpart (J2000) (RA_cpt)meta.id.assoc;pos.eq.decrmagr-band AUTO magnitude [AB] (mag_r)magphot.mag;em.opt.Rfloatzmagz-band AUTO magnitude [AB] (mag_z)magphot.mag;em.opt.IfloatJmagJ-band AUTO magnitude [AB] (mag_J)magphot.mag;em.IR.Jfloat[4.5um]IRAC 4.5 micron AUTO magnitude [AB] (mag_IRAC_CH2)magphot.flux.density;em.IR.4-8umfloatzbest? Source redshift: spectroscopic when available, photometric otherwise (z_best)src.redshift;pos.heliocentricdoublenullablezspec? Source spectroscopic redshift (z_spec) (2)src.redshiftdoublenullablespecFlag[0/2]? Spectrum flag (spec_flag) (3)meta.codefloatnullablespecType? Spectral type (spec_type)meta.codecharspecInstSpectral origin (spec_instrument) (4)meta.codecharzphotbest? Photometric redshift (z_phot_best)src.redshift.photfloatnullableb_zphotbest? Photometric redshift 68% lower boundary (from the PDZ) (z_phot_Pdz68_lo)src.redshift.phot;stat.minfloatnullableB_zphotbest? Photometric redshift 68% upper boundary (from the PDZ) (z_phot_pdz68_up)src.redshift.phot;stat.maxfloatnullablechiphot? Reduced chi square of the photometric redshift SED fit (chi_phot)stat.fit.chi2;src.redshift.phot;meta.modelledfloatnullableSEDtempSED template type (SED_template)meta.id;stat.fitcharMorphSource morphology (Morphology)src.morphcharB_logNH? Hydrogen column density upper boundary (logNH_up)phys.columnDensity;stat.maxfloatnullableLXdeabs0.5-2? Logarithm of the rest-frame, absorption-corrected 0.5-2keV luminosity (Lx_deabs_05-2)phys.luminosity;em.X-rayfloatnullableLxdeabs2-7? Logarithm of the rest-frame, absorption-corrected 2-7 keV luminosity (Lx_deabs_2-7)phys.luminosity;em.X-rayfloatnullableFlagdetS? "1": Source detected in the 0.5-2keV band in Nanni et al. (2020, Cat. J/A+A/637/A52) (Flag_det_S)meta.code.errorintnullableFlagdetH? "1": Source detected in the 2-7keV band in Nanni et al. (2020, Cat. J/A+A/637/A52) (Flag_det_H)meta.code.errorintnullableSED[*] * for sources with SEDmeta.notecharID-LBTID from the z-detected LBC catalog (Morselli et al., 2014A&A...568A...1M) (ID_LBT) (1)meta.idchar