The XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST)

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dc.creatorGuedel, M.
dc.creatorBriggs, K. R.
dc.creatorArzner, K.
dc.creatorAudard, M.
dc.creatorBouvier, J.
dc.creatorFeigelson, E. D.
dc.creatorFranciosini, E.
dc.creatorGlauser, A.
dc.creatorGrosso, N.
dc.creatorMicela, G.
dc.creatorMonin, J. -L.
dc.creatorMontmerle, T.
dc.creatorPadgett, D. L.
dc.creatorPalla, F.
dc.creatorPillitteri, I.
dc.creatorRebull, L.
dc.creatorScelsi, L.
dc.creatorSilva, B.
dc.creatorSkinner, S. L.
dc.creatorStelzer, B.
dc.creatorTelleschi, A.
dc.date2006-09-06
dc.date2006-09-07
dc.date.accessioned2026-07-07T12:24:39Z
dc.date.available2026-07-07T12:24:39Z
dc.description(abridged:) The XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST) surveys the most populated ~5 square degrees of the Taurus star formation region, 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. Many targets are also studied in the optical, and high-resolution X-ray grating spectroscopy has been obtained for selected bright sources. The X-ray spectra have been coherently analyzed with two different thermal models (2-component thermal model, and a continuous emission measure distribution model). We present overall correlations with fundamental stellar parameters that were derived from the previous literature. A few detections from Chandra observations have been added. 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 Tau 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. Detailed analysis (e.g., variability, rotation-activity relations, influence of accretion on X-rays) will be discussed in a series of accompanying papers.
dc.description75 pg, 77 figs. Accepted by A&A, to appear in a special section/issue dedicated to the XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST). V2: ASCII Table 14 added. Version with higher resolution figures at http://www.issibern.ch/teams/Taurus/papers.html or http://www.astro.phys.ethz.ch/papers/guedel/guedel_p_nf.html
dc.identifierhttps://arxiv.org/abs/astro-ph/0609160
dc.identifierhttp://arxiv.org/abs/astro-ph/0609160
dc.identifierAstron.Astrophys.468:353-377,2007
dc.identifierdoi:10.1051/0004-6361:20065724
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214392
dc.subjectAstrophysics
dc.titleThe XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST)
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