J/A+A/539/A74ivo://CDS.VizieR/J/A+A/539/A74doi:10.26093/cds/vizier.35390074CDSCaramazza M.Micela G.Prisinzano L.Sciortino S.Damiani F.Favata F.,Stauffer J.R.Vallenari A.Wolk S.J.2018-01-30T07:17:49Z2012-02-24T09:06:01ZCDS support team

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

cds-question@unistra.fropen-star-clusterspre-main-sequence-starsx-ray-sourcesThe outer Galaxy, where the environmental conditions are different from the solar neighbourhood is a laboratory in which it is possible to investigate the dependence of star formation process on the environmental parameters. We investigate the X-ray properties of NGC 1893, a young cluster (~1-2Myr) in the outer part of the Galaxy (galactic radius >=11kpc) where we expect differences in the disk evolution and in the mass distribution of the stars, to explore the X-ray emission of its members and compare it with that of young stars in star forming regions near to the Sun.2012A&A...539A..74Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/539/A74CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/527/A77 : NGC 1893 optical and NIR photometry (Prisinzano+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/539/A74https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/539/A74http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/539/A74https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/539/A74https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/539/A74http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/539/A74GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/539/A74/catalog (NGC1893 Chandra X-ray catalog: basic source properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/539/A74/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/539/A74/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/539/A74/catalog?GETtext/xml+votable180.050000true80.517356933.56498810.005555555555555556Cone search capability for table J/A+A/539/A74/uplimit (Upper limit to the X-ray luminosities for NGC1893 X-ray undetected members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/539/A74/uplimit?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/539/A74/uplimit?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/539/A74/uplimit?GETtext/xml+votable180.050000true80.6975933.3894050.0055555555555555566/1285 1287 1296 1298https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/539/A74?format=asciiX-raydefaultJ/A+A/539/A74/catalogNGC1893 Chandra X-ray catalog: basic source propertiesSeqIdentification numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIAU Designation (HHMMSS.ss+DDMMSS.s)meta.idcharRAJ2000X-ray Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000X-ray Declination (J2000)degpos.eq.dec;meta.maine_posStandard deviation of positionarcsecstat.errorfloatOffAxisOff-axis anglearcmininstr.offsetfloatCTnNet counts extracted in the total energy bandctphot.count;em.X-rayfloate_CTnAverage of the upper and lower 1 sigma errorsctstat.errorfloatCTbgBackground counts expected in the source extraction region (total band)ctinstr.background;obs.fieldfloatPSFf[0/1] Fraction of the PSF (at 1.497keV) enclosed within the extraction regioninstr.det.psffloatSigniPhotometric significance computed as net counts divided by the upper error on net countsmeta.notefloatPKS[0/1]? Kolmogorov-Smirnov probability that the lightcurves of the sources are constantstat.fit.goodnessfloatnullablet.expEffective exposure timekstime.duration;obs.exposurefloatEmed? Background-corrected median photon energy (total band)keVem.energyfloatnullablelogLX? Absorption-corrected X-ray luminositieslog(1e-07W)phys.luminosity;em.X-rayfloatnullabler_logLX? X-ray Luminosity origin (1)meta.ref;pos.framecharJ/A+A/539/A74/uplimitUpper limit to the X-ray luminosities for NGC1893 X-ray undetected membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDPrisinzano et al. (2011, Cat. J/A+A/527/A77) identification numbermeta.ref;pos.frameintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainlogTXEstimated upper limit to the absorption-corrected X-ray luminositieslog(1e-07W)phys.luminosity;em.X-rayfloat