J/A+A/468/353ivo://CDS.VizieR/J/A+A/468/353doi:10.26093/cds/vizier.34680353CDSGuedel M.Briggs K.R.Arzner K.Audard M.Bouvier J.Feigelson E.D.,Franciosini E.Glauser A.Grosso N.Micela G.Monin J.-L.,Montmerle T.Padgett D.L.Palla F.Pillitteri I.Rebull L.,Scelsi L.Silva B.Skinner S.L.Stelzer B.Telleschi A.2007-08-14T22:31:10Z2007-08-14T22:28:16ZCDS support team

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

cds-question@unistra.frsurveysx-ray-sourcesstellar-associationspre-main-sequence-starsThe XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST) surveys the most populated ~5 square degrees of the Taurus Molecular Cloud, using the XMM-Newton X-ray observatory to study the thermal structure, variability, and long-term evolution of hot plasma, to investigate the magnetic dynamo, and to search for new potential members of the association. We present overall correlations with fundamental stellar parameters that were derived from the previous literature. The present overview paper introduces the project and provides the basic results from the X-ray analysis of all sources detected in the XEST survey. Comprehensive tables summarize the stellar properties of all targets surveyed. The survey goes deeper than previous X-ray surveys of Taurus by about an order of magnitude and for the first time systematically accesses very faint and strongly absorbed TMC objects. We find a detection rate of 85% and 98% for classical and weak-line T Tauri stars (CTTS resp. WTTS), and identify about half of the surveyed protostars and brown dwarfs. Overall, 136 out of 169 surveyed stellar systems are detected. We describe an X-ray luminosity vs. mass correlation, discuss the distribution of X-ray-to-bolometric luminosity ratios, and show evidence for lower X-ray luminosities in CTTS compared to WTTS.2007A&A...468..353Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/468/353CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/325/647 : High-resolution spectra south of Taurus (Neuhaeuser+ 1997)J/A+AS/124/449 : Young stars south of Taurus-Auriga (Magazzu+ 1997)J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)J/A+A/468/379 : XMM Optical Monitor Survey of TMC (Audard+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/468/353https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/468/353http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/468/353https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/468/353https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/468/353http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/468/353GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/468/353/table14 (Coordinates and count rates for 2347 X-ray sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/468/353/table14?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/468/353/table14?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/468/353/table14?GETtext/xml+votable180.050000true58.266333331.88411110.0055555555555555565/263 268 292 6/342 1031 1037 1039 1048 1050-1051 1061 1071 1076 1080 1082-1083 1114-1115 1137 1154-1155 1157 1159-1160 1198-1199 23548-23549https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/468/353?format=asciiX-raydefaultJ/A+A/468/353/table14Coordinates and count rates for 2347 X-ray sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqCatalog numbermeta.id;meta.mainintXEST-fldXEST field numbermeta.id;obs.fieldintXEST-srcXEST source number in fieldmeta.idintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainePosPositional Error (1 sigma)arcsecstat.errorfloatMLFMaximum likelihood in full band (0.5-7.3keV)stat.likelihooddoublectFNumber of counts in full band (0.5-7.3keV)ctphot.count;em.X-rayintExptFPN-equivalent full band (0.5-7.3keV) exposure timestime.duration;obs.exposureintCRFPN-equivalent full band (0.5-7.3keV) source count ratect/sphot.count;em.X-rayfloate_CRFError of full band source count ratect/sstat.errorfloatMLSMaximum likelihood in soft band (0.5-2.0keV)stat.likelihooddoublectSNumber of counts in soft band (0.5-2.0keV)ctphot.count;em.X-rayintExptSPN-equivalent soft band (0.5-2.0keV) exposure timestime.duration;obs.exposure;em.X-ray.softintCRSPN-equivalent soft band (0.5-2.0keV) source count ratect/sphot.count;em.X-rayfloate_CRSError of soft band source count ratect/sstat.errorfloatMLHMaximum likelihood in hard band (2.0-7.3keV)stat.likelihooddoublectHNumber of counts in hard band (2.0-7.3keV)ctphot.count;em.X-rayintExptHPN-equivalent ard band (2.0-7.3keV) exposure timestime.duration;obs.exposureintCRHPN-equivalent hard band (2.0-7.3keV) source count ratect/sphot.count;em.X-rayfloate_CRHError of hard band source count ratect/sstat.errorfloatHRHardness (CRH-CRS)/(CRF) (1)phot.fluxfloatHRuppHardness upper limit (1 sigma)phot.flux;arith.ratiofloatHRlowHardness lower limit (1 sigma)phot.flux;arith.ratiofloatComCommentsmeta.notechar