J/ApJ/741/49ivo://CDS.VizieR/J/ApJ/741/49doi:10.26093/cds/vizier.17410049CDSSwartz D.A.Soria R.Tennant A.F.Yukita M.2017-12-12T14:44:31Z2013-04-17T13:12:11ZCDS support team

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

cds-question@unistra.frgalaxiesx-ray-sourcesOne hundred seven ultraluminous X-ray sources (ULXs) with 0.3-10.0keV luminosities in excess of 10^39^erg/s are identified in a complete sample of 127 nearby galaxies. The sample includes all galaxies within 14.5Mpc above the completeness limits of both the Uppsala Galaxy Catalogue (Cat. VII/26) and the Infrared Astronomical Satellite survey (Cat. II/125). The galaxy sample spans all Hubble types, a four-decade range in mass, 7.5<log(M/M_{sun}_)<11.4, and in star formation rate, 0.0002<SFR(M_{sun}_/yr)<=3.6. ULXs are detected in this sample at rates of one per 3.2x10^10^M_{sun}_, one per ~0.5M_{sun}_/yr star formation rate, and one per 57Mpc^3^ corresponding to a luminosity density of ~2x10^37^erg/s/Mpc^3^. At these rates we estimate as many as 19 additional ULXs remain undetected in fainter dwarf galaxies within the survey volume. An estimated 14 objects, or 13%, of the 107 ULX candidates are expected to be background sources. The differential ULX luminosity function shows a power-law slope {alpha}~-0.8 to -2.0 with an exponential cutoff at ~20x10^39^erg/s with precise values depending on the model and on whether the ULX luminosities are estimated from their observed numbers of counts or, for a subset of candidates, from their spectral shapes. Extrapolating the observed luminosity function predicts at most one very luminous ULX, L_X_~10^41^erg/s, within a distance as small as 100Mpc. The luminosity distribution of ULXs within the local universe cannot account for the recent claims of luminosities in excess of 2x10^41^erg/s, requiring a new population class to explain these extreme objects.2011ApJ...741...49Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/741/49CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2012)B/xmm : XMM-Newton Log (XMM-Newton Science Operation Center, 2012)VII/113 : Catalogued Galaxies + QSOs observed in IRAS Survey, V2 (IPAC 1989)II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)VII/26 : Uppsala General Catalogue of Galaxies (UGC) (Nilson 1973)J/MNRAS/416/1844 : 2XMM ultraluminous X-ray source candidates (Walton+, 2011)J/ApJ/687/471 : Observational comparison between ULXs & XRBs (Berghea+, 2008)J/ApJ/664/458 : Spectral fit of ULX sources (Devi+, 2007)J/A+A/452/739 : ULX sources and FIRST radio sources (Sanchez-Sutil+, 2006)J/ApJ/649/730 : ULX population in nearby galaxies from XMM (Winter+, 2006)J/A+A/429/1125 : Catalog of Ultraluminous X-ray sources (Liu+, 2005)J/ApJS/157/59 : Ultraluminous X-ray sources in nearby galaxies (Liu+, 2005)J/ApJS/154/519 : Properties of ultraluminous X-ray candidates (Swartz+, 2004)J/MNRAS/344/134 : Chandra ultraluminous X-ray sources (Humphrey+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/741/49https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/741/49http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/741/49https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/741/49https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/741/49http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/741/49GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/741/49/table1 (Properties of ULX candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/741/49/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/741/49/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/741/49/table1?GETtext/xml+votable180.050000true24.212833315.76302780.0055555555555555566/764 922 2320 2377 2380 2383 2409 3506 4511 5572 5715 5995 6619 6649 7241 7606 7743 7799 10761 10841 10856 10900 10901 10905 10911 10977 10979 10986 11027 11127 11375 11434 11448 13162 13522 15592 15593 17754 17755 18398 25594 26217 26265 27030 27106 27643 28054 28077 28123 28167 28173 28184 28496 28521 28524 28535https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/741/49?format=asciiX-raydefaultJ/ApJ/741/49/table1Properties of ULX candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainGalPutative host galaxy name (NGC, IC or UGC number)meta.id.parentcharDist[3.1/14.5] Putative host galaxy distanceMpcpos.distance;pos.heliocentricfloatr/D25[0.01/0.93] Radial position of ULX (1)pos.distancefloatObsIDObservation identifier (Chandra or XMM)meta.id;obs.param;obscharCts[14/9034]? Detected X-ray source counts (2)ctphot.count;em.X-rayfloatnullableS/N[3.2/82.4]? Signal to noise ratio (2)stat.snrfloatnullableLcts[0.2/21.4]? Unabsorbed 0.3-10.0keV luminosity estimated from source counts in 10^39^erg/s (3)1e+32Wphys.luminosity;em.X-rayfloatnullableLx[1/36]? Unabsorbed 0.3-10.0keV luminosity estimated from model fits in 10^39^erg/s (4)1e+32Wphys.luminosity;em.X-rayfloatnullableRef[1/4]? Reference (5)meta.ref;pos.frameintnullableS04Cross-match with Swartz et al., 2004, Cat. J/ApJS/154/519, within 5"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlchar