J/A+A/384/890ivo://CDS.VizieR/J/A+A/384/890doi:10.26093/cds/vizier.33840890CDSBerghoefer T.W.Christian D.J.2017-10-12T13:00:39Z2002-05-18T09:16:20ZCDS support team

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

cds-question@unistra.fropen-star-clustersx-ray-sourcesinfrared-photometryvisible-astronomybroad-band-photometryWe present high spatial resolution optical photometry of NGC 2244 in the Rosette Nebula using the NOAO MOSAIC Imager at Kitt Peak. We obtained BVIR and H{alpha} images of the central cluster and surrounding nebulae, and present results for 138 sources selected from X-ray observations with the ROSAT PSPC and HRI. Color-magnitude diagrams of the cluster show a large number of the stars are still undergoing contraction onto the main sequence. The faintest X-ray selected cluster members have the highest X-ray-to-optical luminosities (L_x_~>7x10^30^erg/s; L_x_/L_bol_=~10^-2^ to 10^-3^) and indicate they are a population of young active late-type stars. H{alpha} emission from the X-ray emitters is also remarkable. We have extended the detections of PMS stars in NGC 2244 well into the ran ge of K spectral types. While most of the cluster stars are located in the color-magnitude diagrams in between the ZAMS and the 3Myrs isochrone, significantly younger low mass stars exist and confirm earlier reports that star formation is still going on in the Rosette Nebula/NGC 2244 region.2002A&A...384..890Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/384/890CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/30 : Second ROSAT PSPC Catalog (ROSAT, 2000)IX/28 : ROSAT HRI Pointed Observations (1RXH) (ROSAT Team, 2000)Table 1: ROSAT observation log.https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/384/890https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/384/890http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/384/890https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/384/890https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/384/890http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/384/890GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/384/890/table3 (Summary of optical and X-ray properties of stars detected in the ROSAT PSPC and HRI observations of the Rosette Nebula)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/384/890/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/384/890/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/384/890/table3?GETtext/xml+votable180.050000true97.4970834.6113330.0055555555555555566/22243 22249 22252https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/384/890?format=asciiX-rayInfraredOpticaldefaultJ/A+A/384/890/table3Summary of optical and X-ray properties of stars detected in the ROSAT PSPC and HRI observations of the Rosette NebulaRemRemarksmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.id;meta.mainintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.maindRA? Angular sep. of PSPC and Optical pos. in RAarcsecpos.eq.ra;arith.difffloatnullabledDE? Angular sep. of PSPC and Optical pos. in DEarcsecpos.eq.dec;arith.difffloatnullableCRpspcPSPC count ratect/ksphot.count;em.X-rayfloate_CRpspcError in PSPC count ratect/ksstat.errorfloatlogLpspclog of PSPC luminositylog(1e-07W)phys.luminosity;em.X-rayfloate_logLpspcError in PSPC luminositylog(1e-07W)stat.errorfloatCRhriHRI count rate (1)ct/ksphot.count;em.X-rayfloate_CRhriError HRI count rate (1)ct/ksstat.errorfloatlogLhrilog of HRI luminositylog(1e-07W)phys.luminosity;em.X-rayfloate_logLhriError in logLhrilog(1e-07W)stat.errorfloatBmag? MOSAIC B magnitudemagphot.mag;em.opt.BfloatnullableVmag? MOSAIC V magnitudemagphot.mag;em.opt.VfloatnullableRmag? MOSAIC R magnitudemagphot.mag;em.opt.RfloatnullableImag? MOSAIC I magnitudemagphot.mag;em.opt.IfloatnullableHamag? MOSAIC H{alpha} magnitudemagphot.flux;em.line.HalphafloatnullableHRISimbad column added by the CDSmeta.ref.urlcharPSPCSimbad column added by the CDSmeta.ref.urlchar