J/A+A/421/175ivo://CDS.VizieR/J/A+A/421/175doi:10.26093/cds/vizier.34210175CDSPillitteri I.Micela G.Sciortino S.Damiani F.Harnden F.R.JR2005-08-16T09:43:24Z2005-08-16T09:41:48ZCDS support team

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

cds-question@unistra.fropen-star-clustersx-ray-sourcesWe present an X-ray study of the high metallicity young open cluster Blanco 1 based on XMM-Newton data. X-ray spectroscopy of cluster members is presented for the first time as well as new X-ray distribution functions of late-type stars. We detected all known dF and dG stars in the EPIC field and 80% and 90% of dK and dM stars, respectively. The X-ray spectral analysis of the X-ray brightest cluster stars and X-ray color analysis of a larger sample show that a model with two temperatures (at about 0.3 and 1keV) explains the quiescent activity phase spectra. We discuss also the nature of unidentified X-ray sources in the observed region and their X-ray spectral properties.2004A&A...421..175Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/421/175CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2002)IX/37 : XMM-Newton Serendipitous Source Catalogue (1XMM) (XMM-SSC, 2003)J/A+A/399/919 : X-ray Luminosities in Blanco 1 (Pillitteri+, 2003)J/A+AS/121/213 : BV photometry of Blanco 1 stars (Panagi+, 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/421/175https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/421/175http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/421/175https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/421/175https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/421/175http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/421/175GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/421/175/tablea1 (X sources with a counterpart in the optical and infrared catalogs USNO, GSC2 and 2MASS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/421/175/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/421/175/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/421/175/tablea1?GETtext/xml+votable180.050000true0.650833-30.2271110.005555555555555556Cone search capability for table J/A+A/421/175/tableb1 (Unidentified X-ray source positions and properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/421/175/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/421/175/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/421/175/tableb1?GETtext/xml+votable180.050000true0.426667-29.9626940.0055555555555555566/16490https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/421/175?format=asciiX-raydefaultJ/A+A/421/175/tablea1X sources with a counterpart in the optical and infrared catalogs USNO, GSC2 and 2MASSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[PMS2004]Sequential number, [PMS2004] Opt NNNintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.maine_PosError on positionarcsecfloatExpTimeExposition time (G1)ksfloatCRateCount rate (G1)ct/ksfloate_CRaterms uncertainty on CRatect/ksfloatUSNO-B1Positional matches within 13" in USNO-B1, (<I/284>) catalogintGSC2Positional matches within 13" in GSC2, (<I/271>) catalogint2MASSPositional matches within 13" in 2MASS, (<II/246>) catalogintJ/A+A/421/175/tableb1Unidentified X-ray source positions and propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[PMS2004]Sequential number, [PMS2004] Un NNintXMMUXMMU designation (JHHMMSS.s+DDMMSS) (1)charRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainOffaxisOffaxisarcminfloatSigniSignificancefloatExpTimeExposition time (G1)ksfloatCRateCount rate (G1)ct/ksfloate_CRaterms uncertainty on CRatect/ksfloat