J/A+A/439/1149ivo://CDS.VizieR/J/A+A/439/1149doi:10.26093/cds/vizier.34391149CDSArgiroffi C.Maggio A.Peres G.Stelzer B.Neuhaeuser R.2006-12-20T16:23:35Z2006-12-20T17:23:09ZCDS support team

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

cds-question@unistra.frmultiple-starspre-main-sequence-starsx-ray-sourcesspectroscopyWe present results of X-ray spectroscopy for TWA 5, a member of the young TW Hydrae association, observed with XMM-Newton. TWA 5 is a multiple system which shows H{alpha} emission, a signature typical of classical T Tauri stars, but no infrared excess. From this analysis of the RGS and EPIC spectra, we have derived the emission measure distribution vs. temperature of the X-ray emitting plasma, its abundances, and the electron density.2005A&A...439.1149Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/439/1149CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/439/1149https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/439/1149http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/439/1149https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/439/1149https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/439/1149http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/439/1149GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapX-rayOpticaldefaultJ/A+A/439/1149/tablea1Strongest RGS lines of TWA 5recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLabelLabel numbermeta.idcharLambdaO? Observed wavelength (1)0.1nmem.wlfloatnullableLambdaPPredicted wavelength (1)0.1nmem.wl;phys.atmol.transitionfloatIonIonphys.atmol.ionStagecharlogTmaxTemperature of maximum emissivitylog(K)phys.temperaturefloatFlux? Line flux (2)1e-06ph.s**-1.cm**-2phot.fluxfloatnullablee_Flux? rms uncertainty on Flux (2)1e-06ph.s**-1.cm**-2stat.error;phot.fluxfloatnullableTransTransition (upper --> lower)meta.id;phys.atmol.transition