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

被引：0
|
作者：
Grosso, N [1 ]
Briggs, K
Güdel, M
Guieu, S
Franciosini, E
Audard, M
Dougados, C
Monin, JL
Ménard, F
Bouvier, J
机构：
[1] Univ Grenoble 1, Astrophys Lab, F-38041 Grenoble, France
[2] Paul Scherrer Inst, Villigen, Switzerland
[3] INAF Osservatorio Astron Palermo, I-90134 Palermo, Italy
[4] INAF Osservatorio Astron Arcetri, I-50125 Florence, Italy
[5] Inst Univ France, Pau, France
[6] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA
来源：
PROCEEDINGS OF THE X-RAY UNIVERSE 2005, VOLS 1 AND 2 | 2006年 / 604卷
关键词：
Taurus dark cloud; brown dwarfs; X-rays;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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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页码：83 / +
页数：2
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