A giant planet candidate near a young brown dwarf
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Open Access
- 21 September 2004
- journal article
- letter
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 425 (2) , L29-L32
- https://doi.org/10.1051/0004-6361:200400056
Abstract
We present deep VLT/NACO infrared imaging and spectroscopic observations of the brown dwarf 2MASSWJ 1207334-393254, obtained during our on-going adaptive optics survey of southern young, nearby associations. This ~25 brown dwarf, located ~70 pc from Earth, has been recently identified as a member of the TW Hydrae Association (age ~ 8 Myr). Using adaptive optics infrared wavefront sensing to acquire sharp images of its circumstellar environment, we discovered a very faint and very red object at a close separation of ~780 mas (~55 AU). Photometry in the H, and bands and upper limit in J-band are compatible with a spectral type L5-L9.5. Near-infrared spectroscopy is consistent with this spectral type estimate. Different evolutionary models predict an object within the planetary regime with a mass of and an effective temperature of K.Keywords
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