J/A+A/557/A81ivo://CDS.VizieR/J/A+A/557/A81doi:10.26093/cds/vizier.35570081CDSMelnyk O.Plionis M.Elyiv A.Salvato M.Chiappetti L.Clerc N.,Gandhi P.Pierre M.Sadibekova T.Pospieszalska-Surdej A.Surdej J.2017-10-12T13:00:50Z2013-09-05T07:48:44ZCDS support team

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

cds-question@unistra.frx-ray-sourcesactive-galactic-nucleiquasarsredshiftedThe XMM-Large Scale Structure survey (XMM-LSS), covering an area of 11.1 sq. deg., contains more than 6000 X-ray point-like sources detected with XMM-Newton to a flux of 3x10^-15^erg/s/cm^2^ in the [0.5-2]keV band. The vast majority of these sources have optical (CFHTLS), infrared (SWIRE IRAC and MIPS), near-infrared (UKIDSS) and/or ultraviolet (GALEX) counterparts. We wish to investigate the environmental properties of the different types of the XMM-LSS X-ray sources by defining their environment using the i'-band CFHTLS W1 catalog of optical galaxies to a magnitude limit of 23.5mag. We have classified 4435 X-ray selected sources on the basis of their spectra, SEDs, and X-ray luminosity, and estimated their photometric redshifts, which have a 4-11 band photometry with an accuracy of sigma_dz_/(1+z_sp_)=0.076 with 22.6% outliers for i'<26mag. We estimated the local overdensities of 777 X-ray sources that have spectro-z or photo-z calculated by using more than seven bands (accuracy of sigma_dz_/(1+z_sp_)=0.061 with 13.8% outliers) within the volume-limited region defined by 0.1<z<0.85 and -23.5<M_i'_<-20. Although X-ray sources may be found in variety of environments, a high fraction (~55-60%), as verified by comparing with the random expectations, reside in overdense regions. The galaxy overdensities within which X-ray sources reside show a positive recent redshift evolution (at least for the range studied; z<0.85). We also find that X-ray selected galaxies, when compared to AGN, inhabit significantly higher galaxy overdensities, although their spatial extent appear to be smaller than that of AGN. Hard AGN (HR>-0.2) are located in more overdense regions than soft AGN (HR<-0.2), which is clearly seen in both redshift ranges, although it appears to be stronger in the higher redshift range (0.55<z<0.85). Furthermore, the galaxy overdensities (with {delta}>1.5) within which soft AGN are embedded appear to evolve more rapidly compared to the corresponding overdensities around hard AGN.2013A&A...557A..81Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/557/A81CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/474/473 : XMM-LSS survey: AGN classifications (Garcet+, 2007)J/MNRAS/429/1652 : XMM-LSS catalogue. Version II. (Chiappetti+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/557/A81https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/557/A81http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/557/A81https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/557/A81https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/557/A81http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/557/A81GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/557/A81/table2 (Parameters of X-ray sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/557/A81/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/557/A81/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/557/A81/table2?GETtext/xml+votable180.050000true35.5699-4.354290.0055555555555555565/4422-4423 4428 6/17671 17676-17677 17679 17681-17684 17686 17701 17716-17717https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/557/A81?format=asciiX-rayOpticaldefaultJ/A+A/557/A81/table2Parameters of X-ray sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2XLSSd2XLSSd name (JHHMMSS.s+DDMMSS)meta.id;meta.maincharm_2XLSSd[ab] Multiplicity index on 2XLSSdmeta.code.multipcharRAJ2000Optical counterpart Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Optical counterpart declination (J2000.0)degpos.eq.dec;meta.mainzsp? spectroscopic redshift when availablesrc.redshiftfloatnullableq_zspRank of the spectroscopic redshift (1)meta.code.qualintr_zspSource of the spectroscopic redshift, in refs.dat file (2)meta.ref;pos.framecharspClSpectral classification: AGN, GAL, GAL/AGN, QSO, QSO2, STARsrc.classcharzph? Photometric redshiftsrc.redshiftfloatnullableq_zphRank of the photometric redshift (4)meta.code.qualintsedClClassification according to SED (3)src.classcharHR[-1/1] Hardness ratiophot.flux;arith.ratiofloatLXsoft? X-ray luminosity in the soft band (erg/s)1e-07Wphys.luminosity;em.X-raydoublenullableLXhard? X-ray luminosity in the hard band (erg/s)1e-07Wphys.luminosity;em.X-raydoublenullableClFinal classification of the source: AGN, GAL, QSO or STARsrc.classchardog[0/1] 1 = DOG object (Dust Obscured Galaxy)meta.codeintSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/557/A81/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar