J/A+A/490/113ivo://CDS.VizieR/J/A+A/490/113doi:10.26093/cds/vizier.34900113CDSGiardino G.Pillitteri I.Favata F.Micela G.2008-11-30T13:25:45Z2008-11-30T14:22:00ZCDS support team

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

cds-question@unistra.fropen-star-clustersx-ray-sourcesinfrared-photometryWhile observational evidence shows that most of the decline in a star's X-ray activity occurs between the age of the Hyades (~8x10^8yr) and that of the Sun, very little is known about the evolution of stellar activity between these ages. To gain information on the typical level of coronal activity at a star's intermediate age, we studied the X-ray emission from stars in the 1.9Gyr old open cluster NGC 752. We analysed a ~140ks Chandraobservation of NGC 752 and a ~50ks XMM-Newtonobservation of the same cluster. We detected 262 X-ray sources in the Chandra data and 145 sources in the XMM-Newton observation. Around 90% of the catalogued cluster members within Chandra's field-of-view are detected in the X-ray. The X-ray luminosity of all observed cluster members (28 stars) and of 11 cluster member candidates was derived.2008A&A...490..113Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/490/113CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/PASP/106/281 : Photometry and radial velocities in NGC 752 (Daniel+, 1994)J/A+AS/87/69 : Photometry and radial velocities in NGC 752 (Daniel+, 1994)J/A+A/339/423 : Velocities of red giants in NGC 752 (Mermilliod+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/490/113https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/490/113http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/490/113https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/490/113https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/490/113http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/490/113GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/490/113/table7 (*X-ray sources detected with Pwxdetect in the XMM observation of the open cluster NGC 752.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/490/113/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/490/113/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/490/113/table7?GETtext/xml+votable180.050000true29.12041737.8561110.005555555555555556Cone search capability for table J/A+A/490/113/table6 (*X-ray sources detected with Pwdetect in the Chandra observation of the open cluster NGC 752 (energy band {Delta}E=0.5-2.0keV))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/490/113/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/490/113/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/490/113/table6?GETtext/xml+votable180.050000true29.17708337.7569440.0055555555555555566/24368.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/490/113?format=asciiX-rayInfrareddefaultJ/A+A/490/113/table7*X-ray sources detected with Pwxdetect in the XMM observation of the open cluster NGC 752.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.recordintn_Seq[+-] Note on Seq (1)meta.notecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainCRCount ratect/ksphot.count;em.X-rayfloate_CRrms uncertainty on CRct/ksstat.errorfloatID? Chandra Counterpart numbermeta.idintnullabler(ID)? Radial distance to the Chandra counterpartarcsecpos.angDistancefloatnullableJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS K magnitudemagphot.mag;em.IR.Kfloatnullabler? Radial distance to the 2MASS counterpartarcsecphys.angSizefloatnullable2MDisplay the details about the 2MASS source (Cat. II/246)meta.ref.urlcharJ/A+A/490/113/table6*X-ray sources detected with Pwdetect in the Chandra observation of the open cluster NGC 752 (energy band {Delta}E=0.5-2.0keV)SeqSequential numbermeta.recordintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainCRCount ratect/ksphot.count;em.X-rayfloate_CRrms uncertainty on CRct/ksstat.errorfloatJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS K magnitudemagphot.mag;em.IR.Kfloatnullabler? Radial distance to the 2MASS counterpartarcsecphys.angSizefloatnullable2MDisplay the details about the 2MASS source (Cat. II/246)meta.ref.urlchar