J/ApJ/706/810ivo://CDS.VizieR/J/ApJ/706/810doi:10.26093/cds/vizier.17060810CDSPovic M.Sanchez-Portal M.Perez Garcia A.M.Bongiovanni A.Cepa J.,Alfaro E.Castaneda H.Lorenzo M.F.Gallego J.Gonzalez-Serrano J.I.,Gonzalez J.J.Lara-Lopez M.A.2026-05-19T14:25:37Z2012-01-12T09:30:26ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsx-ray-sourcesgalaxy-classification-systemssurveysastronomical-object-identificationThe Groth field is one of the sky regions that will be targeted by the OSIRIS Tunable Filter Emission Line Object survey in the optical 820nm and 920nm atmospheric windows. In the present paper, public Chandra X-ray data with total exposure time of 200ks are analyzed and combined with optical broadband data of the Groth field, in order to study a set of optical structural parameters of the X-ray emitters and its relation with X-ray properties. To this aim, we processed the raw, public X-ray data using the Chandra Interactive Analysis of Observations, and determined and analyzed different structural parameters, in order to produce a morphological classification of X-ray sources. We present the morphology of 340 X-ray emitters with optical counterpart detected. Objects have been classified by X-ray type using a diagnostic diagram relating X-ray-to-optical ratio (X/O) to hardness ratio. We did not find any clear correlation between X-ray and morphological types. We analyzed the angular clustering of X-ray sources with optical counterpart using two-point correlation functions. A significant positive angular clustering was obtained from a preliminary analysis of four subsamples of the X-ray sources catalog. The clustering signal of the optically extended counterparts is similar to that of strongly clustered populations like red and very red galaxies, suggesting that the environment plays an important role in active galactic nuclei phenomena. Finally, we combined optical structural parameters with other X-ray and optical properties, and we confirmed an anticorrelation between the X/O ratio and the Abraham concentration index, which might suggest that early-type galaxies have lower Eddington rates than those of late-type galaxies.2009ApJ...706..810Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/706/810CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-)J/ApJS/180/102 : AEGIS-X: Chandra deep survey (Laird+, 2009)J/ApJS/157/175 : DEEP Groth Strip Survey. VIII. (Koo+, 2005)J/ApJ/599/1006 : DEEP Groth Strip Survey. VII. (Kobulnicky+, 2003)J/ApJ/571/136 : DEEP Groth Strip survey. X. (Im+, 2002)J/ApJS/107/1 : Morphologies of distant galaxies II (Abraham+ 1996)http://asc.harvard.edu/cda/ : Chandra Data Archive home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/706/810https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/706/810http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/706/810https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/706/810https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/706/810http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/706/810GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/706/810/table3 (X-ray emitters with optical counterparts in the Groth-Westphal strip (GWS) field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/706/810/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/706/810/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/706/810/table3?GETtext/xml+votable180.050000true213.925027552.32281220.0055555555555555566/11424-11425https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/706/810?format=asciiX-rayOpticaldefaultJ/ApJ/706/810/table3X-ray emitters with optical counterparts in the Groth-Westphal strip (GWS) fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[PSP2009][1/340] Identifier numbermeta.id;meta.mainintRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainFx? Flux in full (0.5-7keV) band (in erg/cm^2^/s)mW.m**-2phot.flux;em.X-raydoublenullableX/O? X-ray to optical flux ratio (1)phot.flux;arith.ratiodoublenullableHR1? The ((2-4.5)/(0.5-2keV)) hardness ratiophot.flux;arith.ratiofloatnullableCAbraham concentration index (2)meta.code;spect.indexfloatA? Abraham asymmetry index (Abraham et al. 1994ApJ...432...75A, 1996, Cat. J/ApJS/107/1)meta.code;spect.indexfloatnullableMorphMorphological type (3)meta.code;src.morphchar[LNG2009]Identifier in Laird et al. AEGIS-X 2009 catalog (J/ApJS/180/102)meta.id.crosscharSimbadSimbad column added by the CDSchar