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Communication Dans Un Congrès Année : 2006

X-ray emission from the young brown dwarfs of the Taurus Molecular Cloud

Résumé

The X-ray Emission Survey of the Taurus Molecular Cloud (XEST) is an exceptionally large project to systematically investigate the high-energy properties of young stellar objects in this nearest star-forming region. It is accompanied by optical and near-infrared surveys of the same area. When XMM-Newton archival observations are added, the total X-ray exposure time is more than 200 hours shared among 25 pointings. In particular the surveyed areas, combined with two Chandra archival observations, allow us to study the X-ray emission of 19 young bona fide brown dwarfs (BDs) of the Taurus Molecular Cloud (TMC). We report here the properties of the X-ray emission of these young BDs. We detected half of this substellar sample in X-rays. Comparison with the properties of the X-ray emission from low-mass stars will allow us to investigate changes in the magnetic activity around the stellar/substellar boundary.
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Dates et versions

hal-00104982 , version 1 (09-10-2006)

Identifiants

  • HAL Id : hal-00104982 , version 1

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Nicolas Grosso, Kevin R. Briggs, Manuel Güdel, Sylvain Guieu, Elena Franciosini, et al.. X-ray emission from the young brown dwarfs of the Taurus Molecular Cloud. The X-ray Universe 2005 26-30 September 2005, El Escorial, Madrid, Spain, Sep 2005, El Escorial, Madrid, Spain. pp.83 - 84. ⟨hal-00104982⟩
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