J/ApJ/821/54ivo://CDS.VizieR/J/ApJ/821/54doi:10.26093/cds/vizier.18210054CDSSonbas E.Rangelov B.Kargaltsev O.Dhuga K.S.Hare J.Volkov I.2018-09-13T05:59:09Z2016-07-22T12:45:07ZCDS support team

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

cds-question@unistra.frx-ray-sourcesactive-galactic-nucleivisible-astronomysloan-photometryinfrared-photometryWe present the spectral analysis of an 87ks XMM-Newton observation of Draco, a nearby dwarf spheroidal galaxy. Of the approximately 35 robust X-ray source detections, we focus our attention on the brightest of these sources, for which we report X-ray and multiwavelength parameters. While most of the sources exhibit properties consistent with active galactic nuclei, few of them possess the characteristics of low-mass X-ray binaries (LMXBs) and cataclysmic variable (CVs). Our analysis places constraints on the population of X-ray sources with LX>3x10^33^erg/s in Draco, suggesting that there are no actively accreting black hole and neutron star binaries. However, we find four sources that could be quiescent state LMXBs/CVs associated with Draco. We also place constraints on the central black hole luminosity and on a dark matter decay signal around 3.5keV.2016ApJ...821...54Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/821/54CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/xmm : XMM-Newton Obs. Log (XMM-Newton Science Operation Center, 2012)IX/46 : XMM-Newton Serendipitous Source Catalogue 3XMM-DR5 (XMM-SSC, 2016)II/328 : AllWISE Data Release (Cutri+ 2013)V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)VII/258 : Quasars and Active Galactic Nuclei (13th Ed.) (Veron+ 2010)V/136 : Teff and metallicities for Tycho-2 stars (Ammons+, 2006)V/123 : Catalog of Cataclysmic Variables (Downes+ 2001-2006)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/ApJ/813/28 : Autoclassification of the variable 3XMM sources (Farrell+, 2015)J/MNRAS/451/2735 : Four close dSph XXM observations (Manni+, 2015)J/MNRAS/448/2717 : Resolved stellar spectra Bayesian analysis (Walker+, 2015)J/AJ/149/42 : Proper motion of Draco dwarf galaxy from HST (Pryor+, 2015)J/ApJ/756/27 : Classif. of sources from the 2XMMi-DR3 cat. (Lin+, 2012)J/A+A/469/807 : Catalogue of Galactic low-mass X-ray binaries (Liu+, 2007)J/MNRAS/375/831 : Draco MegaCam, INT and HST photometry (Segall+, 2007)J/A+A/455/1165 : Catalogue of Galactic high-mass X-ray binaries (Liu+, 2006)J/A+A/442/165 : IJKs photom. of late-type stars in Draco dSph (Cioni+, 2005)J/ApJS/160/319 : COUP: observations and source lists (Getman+, 2005)J/ApJS/145/245 : SDSS stars in Draco dwarf spheroidal galaxy (Rave+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/821/54https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/821/54http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/821/54https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/821/54https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/821/54http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/821/54GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/821/54/table3 (Properties and automated results for classification X-ray sources in the Draco field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/821/54/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/821/54/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/821/54/table3?GETtext/xml+votable180.050000true260.091757.9740.0055555555555555566/101831.3088508223161842e-20 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/821/54?format=asciiX-rayOpticalInfrareddefaultJ/ApJ/821/54/table3Properties and automated results for classification X-ray sources in the Draco fieldSimbadNameSimbad column added by the CDSmeta.idcharHR2Hardness ratio (1)phot.flux;arith.ratiofloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential Running numbermeta.id;meta.mainintRAJ2000Right Ascension, decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination, decimal degrees (J2000)degpos.eq.dec;meta.mainePos[0.4/6.3] Positional Uncertainty from 3XMM-DR5 catalogarcsecstat.error;posfloatFlux[0.1/157] Observed X-ray flux in the 0.5-12keV range1e-14mW.m**-2phot.flux;em.X-rayfloate_Flux[0.3/16] Uncertainty in Flux1e-14mW.m**-2stat.error;phot.fluxfloate_HR2[0.01/0.4] Uncertainty in HR2stat.errorfloatHR4Hardness ratio (1)phot.flux;arith.ratiofloate_HR4[0.01/0.9] Uncertainty in HR4stat.errorfloatS/N[6/116] Signal-to-noise ratiostat.snrfloatumag[10/29.2]? SDSS DR9 u magnitudemagphot.mag;em.opt.Ufloatnullablegmag[11.3/23.2]? SDSS DR9 g magnitudemagphot.mag;em.opt.Bfloatnullablermag[11.4/22.5]? SDSS DR9 r magnitudemagphot.mag;em.opt.Rfloatnullableimag[11.3/23.2]? SDSS DR9 i magnitudemagphot.mag;em.opt.Ifloatnullablezmag[9.8/22.5]? SDSS DR9 z magnitudemagphot.mag;em.opt.IfloatnullableJmag[7.7/16.7]? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag[7.4/16.5]? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKsmag[7.4/15.8]? 2MASS Ks magnitudemagphot.mag;em.IR.KfloatnullableW1mag[7.7/16.2]? WISE W1 magnitude (3.35um)magphot.mag;em.IR.3-4umfloatnullableW2mag[7.4/16.4]? WISE W2 magnitude (4.6um)magphot.mag;em.IR.4-8umfloatnullableW3mag[7.3/13]? WISE W3 magnitude (11.6um)magphot.flux.density;em.IR.8-15umfloatnullableClassClasssrc.classcharProb[84/99]? Probability for not being a spurious detection (see section 3.2)stat.probabilityintnullableFlagObject Flags (2)meta.code.errorcharSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlchar2MDisplay the 2MASS data (Cutri+ 2003, II/246) within 3"meta.ref.urlcharWISEDisplay the AllWISE data (Cutri+ 2013, II/328) within 3"meta.ref.urlcharDR9Display the SDSS-DR9 data (Adelman-McCarthy+, 2012, V/139) within 3"meta.ref.urlchar