J/MNRAS/451/2735ivo://CDS.VizieR/J/MNRAS/451/2735doi:10.26093/cds/vizier.74512735CDSManni L.Nucita A.A.De Paolis F.Testa V.Ingrosso G.2024-08-15T20:13:47Z2016-03-16T14:57:45ZCDS support team

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

cds-question@unistra.frgalaxiesx-ray-sourcesWe present the results of the analysis of deep archival XMM-Newton observations towards the dwarf spheroidal galaxies Draco, Leo I, Ursa Major II (UMa II) and Ursa Minor (UMi) in the Milky Way neighbourhood. The X-ray source population is characterized and cross-correlated with available databases to infer their nature. We also investigate if intermediate-mass black holes are hosted in the centre of these galaxies. For Draco, we detect 96 high-energy sources, two of them possibly being local stars, while no evidence for any X-ray emitting central compact object is found. Towards the Leo I and UMa II fields of view, we reveal 116 and 49 X-ray sources, respectively. None of them correlates with the putative central black holes and only one is likely associated with a UMa II local source. The study of the UMi dwarf galaxy found 54 high-energy sources and a possible association with a source at the dwarf spheroidal galaxy centre. We put an upper limit on the luminosity of the central compact object of 4.02x10^33^erg/s. Furthermore, via the correlation with a radio source near the galactic centre, the putative black hole should have a mass of (2.76^+32.00^_-2.54_)x10^6^M_{sun}_ and be radiatively inefficient. This confirms a previous result obtained using Chandra data alone.2015MNRAS.451.2735Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/451/2735CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/550/A18 : XMM X-ray sources in Fornax dwarf galaxy (Nucita+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/451/2735https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/451/2735http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/451/2735https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/451/2735https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/451/2735http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/451/2735GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/451/2735/draco (X-ray sources (table1) and correlation (table5) towards the Draco dSph)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/451/2735/draco?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/451/2735/draco?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/451/2735/draco?GETtext/xml+votable180.050000true259.8587557.8385280.005555555555555556Cone search capability for table J/MNRAS/451/2735/leoi (X-ray sources (table1) and correlation (table5) towards the Leo I dSph)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/451/2735/leoi?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/451/2735/leoi?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/451/2735/leoi?GETtext/xml+votable180.050000true152.23416712.3242220.005555555555555556Cone search capability for table J/MNRAS/451/2735/umaii (X-ray sources (table1) and correlation (table5) towards the UMa II dSph)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/451/2735/umaii?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/451/2735/umaii?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/451/2735/umaii?GETtext/xml+votable180.050000true132.89291763.2133890.005555555555555556Cone search capability for table J/MNRAS/451/2735/umi (X-ray sources (table1) and correlation (table5) towards the UMi dSph)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/451/2735/umi?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/451/2735/umi?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/451/2735/umi?GETtext/xml+votable180.050000true227.257567.1921940.0055555555555555566/7416-7417 10182-10183 11691 27574 27580https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/451/2735?format=asciiX-raydefaultJ/MNRAS/451/2735/dracoX-ray sources (table1) and correlation (table5) towards the Draco dSphSClassSimbad classificationsrc.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSrcSource sequential numbermeta.recordintm_SrcMultiplicity index on Srcmeta.code.multipcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.maine_posPositional errorarcsecstat.errorfloatl_FXabs[<= ] Limit flag on FXabsmeta.code.errorcharFXabsAbsorbed flux in 0.2-12keV band (in 10-14erg/cm2/s)1e-17W.m**-2phot.flux;em.X-ray.mediumfloate_FXabs? rms uncertainty on FXabs (in 10-14erg/cm2/s)1e-17W.m**-2stat.errorfloatnullableClassHR classificationsrc.classcharlog(fX/fopt)? X-to-optical flux ratiophot.flux;arith.ratiofloatnullableHR*1Hardness ratio HR*1 (H-M/(S+M+H) (1)phot.flux;arith.ratiofloate_HR*1rms uncertainty on HR*1stat.errorfloatHR*2Hardness ratio HR*2 (M-S/(S+M+H) (1)phot.flux;arith.ratiofloate_HR*2rms uncertainty on HR*2stat.errorfloatHR1? Hardness ratio HR1 (B2-B1/B2+B1) (1)phot.flux;arith.ratiofloatnullablee_HR1? rms uncertainty on HR1stat.errorfloatnullableHR2? Hardness ratio HR2 (B3-B2/B3+B2) (1)phot.flux;arith.ratiofloatnullablee_HR2? rms uncertainty on HR2stat.errorfloatnullableHR3Hardness ratio HR3 (B4-B3/B4+B3) (1)phot.flux;arith.ratiofloate_HR3rms uncertainty on HR3stat.errorfloatHR4? Hardness ratio HR4 (B5-B4/B5+B4) (1)phot.flux;arith.ratiofloatnullablee_HR4? rms uncertainty on HR4stat.errorfloatnullableqsos? Distance to J/MNRAS/396/223/qsos, D'Abrusco, Longo & Walton (2009) sourcearcsecpos.angDistancefloatnullable2MASS? Distance to 2MASS (II/246) sourcearcsecpos.angDistancefloatnullable2MASX? Distance to 2MASSX (VII/233) sourcearcsecpos.angDistancefloatnullablePPMX? Distance to PPMX (I/312) sourcearcsecpos.angDistancefloatnullablePPMXL? Distance to PPMXL (I/317) sourcearcsecpos.angDistancefloatnullableUSNO-B1? Distance to USNO-B1 (I/284) sourcearcsecpos.angDistancefloatnullableDist1? Distance to source in catalog Cat1arcsecpos.angDistance;meta.tablefloatnullableCat1? Catalog reference for Dist1 (1)meta.bibintnullableDist2? Distance to source in catalog Cat2arcsecpos.angDistance;meta.tablefloatnullableCat2? Catalog reference for Cat2 (1)meta.bibintnullableJ/MNRAS/451/2735/leoiX-ray sources (table1) and correlation (table5) towards the Leo I dSphHR*2Hardness ratio HR*2 (M-S/(S+M+H) (1)phot.flux;arith.ratiofloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSrcSource sequential numbermeta.recordintm_SrcMultiplicity index on Srcmeta.code.multipcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.maine_posPositional errorarcsecstat.errorfloatl_FXabs[<= ] Limit flag on FXabsmeta.code.errorcharFXabsAbsorbed flux in 0.2-12keV band (in 10-14erg/cm2/s)1e-17W.m**-2phot.flux;em.X-ray.mediumfloate_FXabs? rms uncertainty on FXabs (in 10-14erg/cm2/s)1e-17W.m**-2stat.errorfloatnullablelog(fX/fopt)? X-to-optical flux ratiophot.flux;arith.ratiofloatnullableHR*1Hardness ratio HR*1 (H-M/(S+M+H) (1)phot.flux;arith.ratiofloate_HR*1rms uncertainty on HR*1stat.errorfloate_HR*2rms uncertainty on HR*2stat.errorfloatHR1? Hardness ratio HR1 (B2-B1/B2+B1) (1)phot.flux;arith.ratiofloatnullablee_HR1? rms uncertainty on HR1stat.errorfloatnullableHR2? Hardness ratio HR2 (B3-B2/B3+B2) (1)phot.flux;arith.ratiofloatnullablee_HR2? rms uncertainty on HR2stat.errorfloatnullableHR3Hardness ratio HR3 (B4-B3/B4+B3) (1)phot.flux;arith.ratiofloate_HR3rms uncertainty on HR3stat.errorfloatHR4? Hardness ratio HR4 (B5-B4/B5+B4) (1)phot.flux;arith.ratiofloatnullablee_HR4? rms uncertainty on HR4stat.errorfloatnullableDist1? Distance to source in catalog Cat1arcsecpos.angDistance;meta.tablefloatnullableDist2? Distance to source in catalog Cat2arcsecpos.angDistance;meta.tablefloatnullableCat2? Catalog reference for Cat2 (1)meta.bibintnullableSClassSimbad classificationsrc.classcharClassHR classificationsrc.classcharqsos? Distance to J/MNRAS/396/223/qsos, D'Abrusco, Longo & Walton (2009) sourcearcsecpos.angDistancefloatnullable2MASS? Distance to 2MASS (II/246) sourcearcsecpos.angDistancefloatnullable2MASX? Distance to 2MASSX (VII/233) sourcearcsecpos.angDistancefloatnullablePPMX? Distance to PPMX (I/312) sourcearcsecpos.angDistancefloatnullablePPMXL? Distance to PPMXL (I/317) sourcearcsecpos.angDistancefloatnullableUSNO-B1? Distance to USNO-B1 (I/284) sourcearcsecpos.angDistancefloatnullableCat1? Catalog reference for Dist1 (1)meta.bibintnullableJ/MNRAS/451/2735/umaiiX-ray sources (table1) and correlation (table5) towards the UMa II dSphrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSrcSource sequential numbermeta.recordintm_SrcMultiplicity index on Srcmeta.code.multipcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.maine_posPositional errorarcsecstat.errorfloatl_FXabs[<= ] Limit flag on FXabsmeta.code.errorcharFXabsAbsorbed flux in 0.2-12keV band (in 10-14erg/cm2/s)1e-17W.m**-2phot.flux;em.X-ray.mediumfloate_FXabs? rms uncertainty on FXabs (in 10-14erg/cm2/s)1e-17W.m**-2stat.errorfloatnullablelog(fX/fopt)? X-to-optical flux ratiophot.flux;arith.ratiofloatnullableHR*1Hardness ratio HR*1 (H-M/(S+M+H) (1)phot.flux;arith.ratiofloate_HR*1rms uncertainty on HR*1stat.errorfloatHR*2Hardness ratio HR*2 (M-S/(S+M+H) (1)phot.flux;arith.ratiofloate_HR*2rms uncertainty on HR*2stat.errorfloatHR1? Hardness ratio HR1 (B2-B1/B2+B1) (1)phot.flux;arith.ratiofloatnullablee_HR1? rms uncertainty on HR1stat.errorfloatnullableHR2? Hardness ratio HR2 (B3-B2/B3+B2) (1)phot.flux;arith.ratiofloatnullablee_HR2? rms uncertainty on HR2stat.errorfloatnullableHR3Hardness ratio HR3 (B4-B3/B4+B3) (1)phot.flux;arith.ratiofloate_HR3rms uncertainty on HR3stat.errorfloatHR4? Hardness ratio HR4 (B5-B4/B5+B4) (1)phot.flux;arith.ratiofloatnullable2MASX? Distance to 2MASSX (VII/233) sourcearcsecpos.angDistancefloatnullablePPMX? Distance to PPMX (I/312) sourcearcsecpos.angDistancefloatnullablePPMXL? Distance to PPMXL (I/317) sourcearcsecpos.angDistancefloatnullableUSNO-B1? Distance to USNO-B1 (I/284) sourcearcsecpos.angDistancefloatnullableDist1? Distance to source in catalog Cat1arcsecpos.angDistance;meta.tablefloatnullableCat1? Catalog reference for Dist1 (1)meta.bibintnullableDist2? Distance to source in catalog Cat2arcsecpos.angDistance;meta.tablefloatnullableCat2? Catalog reference for Cat2 (1)meta.bibintnullableSClassSimbad classificationsrc.classcharClassHR classificationsrc.classchare_HR4? rms uncertainty on HR4stat.errorfloatnullableqsos? Distance to J/MNRAS/396/223/qsos, D'Abrusco, Longo & Walton (2009) sourcearcsecpos.angDistancefloatnullable2MASS? Distance to 2MASS (II/246) sourcearcsecpos.angDistancefloatnullableJ/MNRAS/451/2735/umiX-ray sources (table1) and correlation (table5) towards the UMi dSphDEJ2000Declination (J2000)pos.eq.dec;meta.maine_posPositional errorarcsecstat.errorfloatl_FXabs[<= ] Limit flag on FXabsmeta.code.errorcharFXabsAbsorbed flux in 0.2-12keV band (in 10-14erg/cm2/s)1e-17W.m**-2phot.flux;em.X-ray.mediumfloate_FXabs? rms uncertainty on FXabs (in 10-14erg/cm2/s)1e-17W.m**-2stat.errorfloatnullablelog(fX/fopt)? X-to-optical flux ratiophot.flux;arith.ratiofloatnullableHR*1Hardness ratio HR*1 (H-M/(S+M+H) (1)phot.flux;arith.ratiofloate_HR*1rms uncertainty on HR*1stat.errorfloatHR*2Hardness ratio HR*2 (M-S/(S+M+H) (1)phot.flux;arith.ratiofloate_HR*2rms uncertainty on HR*2stat.errorfloatHR1? Hardness ratio HR1 (B2-B1/B2+B1) (1)phot.flux;arith.ratiofloatnullablee_HR1? rms uncertainty on HR1stat.errorfloatnullableHR2? Hardness ratio HR2 (B3-B2/B3+B2) (1)phot.flux;arith.ratiofloatnullablee_HR2? rms uncertainty on HR2stat.errorfloatnullableHR3Hardness ratio HR3 (B4-B3/B4+B3) (1)phot.flux;arith.ratiofloate_HR3rms uncertainty on HR3stat.errorfloatHR4? Hardness ratio HR4 (B5-B4/B5+B4) (1)phot.flux;arith.ratiofloatnullablee_HR4? rms uncertainty on HR4stat.errorfloatnullableqsos? Distance to J/MNRAS/396/223/qsos, D'Abrusco, Longo & Walton (2009) sourcearcsecpos.angDistancefloatnullable2MASS? Distance to 2MASS (II/246) sourcearcsecpos.angDistancefloatnullable2MASX? Distance to 2MASSX (VII/233) sourcearcsecpos.angDistancefloatnullablePPMX? Distance to PPMX (I/312) sourcearcsecpos.angDistancefloatnullablePPMXL? Distance to PPMXL (I/317) sourcearcsecpos.angDistancefloatnullableUSNO-B1? Distance to USNO-B1 (I/284) sourcearcsecpos.angDistancefloatnullableDist1? Distance to source in catalog Cat1arcsecpos.angDistance;meta.tablefloatnullableCat1? Catalog reference for Dist1 (1)meta.bibintnullableDist2? Distance to source in catalog Cat2arcsecpos.angDistance;meta.tablefloatnullableCat2? Catalog reference for Cat2 (1)meta.bibintnullableSClassSimbad classificationsrc.classcharClassHR classificationsrc.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSrcSource sequential numbermeta.recordintm_SrcMultiplicity index on Srcmeta.code.multipcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.main