J/ApJ/765/117ivo://CDS.VizieR/J/ApJ/765/117doi:10.26093/cds/vizier.17650117CDSErfanianfar G.Finoguenov A.Tanaka M.Lerchster M.Nandra K.,Laird E.Connelly J.L.Bielby R.Mirkazemi M.Faber S.M.Kocevski D.,Cooper M.Newman J.A.Jeltema T.Coil A.L.Brimioulle F.Davis M.,McCracken H.J.Willmer C.Gerke B.Cappelluti N.Gwyn S.2018-01-02T13:43:03Z2014-12-01T09:19:11ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsx-ray-sourcesredshiftedsurveysWe present the results of a search for extended X-ray sources and their corresponding galaxy groups from 800ks Chandra coverage of the All-wavelength Extended Groth Strip International Survey (AEGIS). This yields one of the largest X-ray-selected galaxy group catalogs from a blind survey to date. The red-sequence technique and spectroscopic redshifts allow us to identify 100% of reliable sources, leading to a catalog of 52 galaxy groups. These groups span the redshift range z~0.066-1.544 and virial mass range M_200_~1.3-13.3x10^13^^M_{sun}_. For the 49 extended sources that lie within DEEP2 and DEEP3 Galaxy Redshift Survey coverage, we identify spectroscopic counterparts and determine velocity dispersions. We select member galaxies by applying different cuts along the line of sight or in projected spatial coordinates. A constant cut along the line of sight can cause a large scatter in scaling relations in low-mass or high-mass systems depending on the size of the cut. A velocity-dispersion-based virial radius can cause a larger overestimation of velocity dispersion in comparison to an X-ray-based virial radius for low-mass systems. There is no significant difference between these two radial cuts for more massive systems. Independent of radial cut, an overestimation of velocity dispersion can be created in the case of the existence of significant substructure and compactness in X-ray emission, which mostly occur in low-mass systems. We also present a comparison between X-ray galaxy groups and optical galaxy groups detected using the Voronoi-Delaunay method for DEEP2 data in this field.2013ApJ...765..117Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/765/117CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2014)B/cfht : Log of CFHT Exposures (CADC, 1979-)III/268 : DEEP2 Redshift Survey, Data Release 4 (Matthews+ 2013)II/317 : The CFHTLS Survey (T0007 release) (Hudelot+ 2012)VII/84 : Groups of Galaxies. III. The CfA Survey (Geller+ 1983)J/ApJ/756/139 : Spectrosc. redshifts of galaxies in groups (Connelly+, 2012)J/ApJ/753/121 : zCOSMOS 20k sample group catalog to z<~1.2 (Knobel+, 2012)J/ApJ/751/50 : Galaxy groups cat. from DEEP2 Redshift Survey (Gerke+ 2012)J/MNRAS/426/296 : Compact Groups of galaxies from 2MASX (Diaz-Gimenez+, 2012)J/ApJS/193/14 : DEEP3 Galaxy Redshift Survey: GOODS-N field (Cooper+, 2011)J/MNRAS/403/2063 : SXDF X-ray groups and galaxy clusters (Finoguenov+, 2010)J/ApJS/180/102 : AEGIS-X: Chandra deep survey (Laird+, 2009)J/ApJ/697/1842 : zCOSMOS 10K sample group catalog to z=1 (Knobel+, 2009)J/ApJ/684/905 : Galaxy clusters from IRAC Shallow Survey (Eisenhardt+, 2008)J/ApJS/172/182 : XMM Clusters of galaxies in COSMOS field (Finoguenov+ 2007)J/ApJS/157/1 : Red-Sequence Cluster Survey (Gladders+, 2005)J/AJ/130/968 : SDSS-C4 cluster catalog (Miller+, 2005)J/ApJS/139/369 : Chandra Deep Field South. 1 Ms catalog (Giacconi+, 2002)J/ApJS/129/435 : NORAS galaxy cluster survey. I. (Bohringer+, 2000)J/ApJ/496/39 : Properties of poor groups of galaxies. I. (Zabludoff+ 1998)http://www.sdss.org/ : SDSS home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/765/117https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/765/117http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/765/117https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/765/117https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/765/117http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/765/117GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/765/117/table1 (AEGIS X-ray galaxy groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/765/117/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/765/117/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/765/117/table1?GETtext/xml+votable180.050000true213.7165752.164810.005555555555555556Cone search capability for table J/ApJ/765/117/table2 (Group member galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/765/117/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/765/117/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/765/117/table2?GETtext/xml+votable180.050000true213.7048097252.166213610.0055555555555555566/11424 11425 11426 11428https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/765/117?format=asciiX-rayOpticaldefaultJ/ApJ/765/117/table1AEGIS X-ray galaxy groupsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDGroup identifier (JHHMM.m+DDMM)meta.id;meta.maincharprimaryq_ID[1/4] Flag from our identification, 1=best (5)meta.code.qualintf_ID[a] a: galaxy group previously reported in Jeltema et al. (2009MNRAS.399..715J)meta.codecharRAJ2000Right ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (1)degpos.eq.dec;meta.mainz[0.06/1.6] Redshift (2)src.redshiftfloatFx[0.06/4.3] 0.5-2keV flux (10-^14^erg/cm^2^/s)1e-17W.m**-2phot.flux;em.X-rayfloate_Fx[0.02/0.5] 1{sigma} error on Fx1e-17W.m**-2stat.errorfloatLx[0.5/63.6] Rest-frame luminosity in the 0.1-2.4keV (10^42^erg/s)1e+35Wphys.luminosity;em.X-rayfloate_Lx[0.04/13.2] Lx uncertainty1e+35Wstat.errorfloatM200[1.3/13.4] Estimated total mass M_200_ (3)1e+13solMassphys.massfloate_M200[0.06/1.6] M200 uncertainty1e+13solMassstat.errorfloatr200[0.9/6.5] X-ray radial cut r_200_ (4)arcminphys.angSize;srcfloatNgNumber of member galaxies in table 2meta.numberintnullableNz[0/28] Number of spectroscopic member galaxies inside r200meta.numberintSig[1.9/16.3] Flux significancestat.fit.goodnessfloatsigX[202/503] Velocity dispersion estimated from X-ray luminosity {sigma}_X_km/sphys.veloc.dispersionintSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/765/117/table2Group member galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDGroup identifier (JHHMM.m+DDMM)meta.id.parentcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainz[0.06/1.6] Redshiftsrc.redshiftdoubleDEEPCross-match within 1" with DEEP2 redshift survey (Matthews et al. 2013, III/268meta.ref.urlnullableCFHTLSCross-match within 1" with CFHTLS wide survey (II/317)meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar