Giant Planet Companion to 2 MASSW J 1207334 − 393254 ⋆
نویسندگان
چکیده
We report new VLT/NACO imaging observations of the young, nearby brown dwarf 2MASSW J1207334−393254 and its suggested planetary mass companion (2M1207 b). Three epochs of VLT/NACO measurements obtained over nearly one year show that the planetary mass companion candidate shares the same proper motion and, with a high confidence level, is not a stationary background object. This result confirms the status of 2M1207 b as of planetary mass (5 times the mass of Jupiter) and the first image of a planetary mass companion in a different system than our own. This discovery offers new perspectives for our understanding of chemical and physical properties of planetary mass objects as well as their mechanisms of formation.
منابع مشابه
Constraints on the formation mechanism of the planetary mass companion of 2 MASS 1207334 - 393254
In this paper we discuss the nature and the possible formation scenarios of the companion of the brown dwarf 2MASS 1207334-393254. We initially discuss the basic physical properties of this object and conclude that, although from its absolute mass (5MJup), it is a planetary object, in terms of its mass ratio q and of its separation a with respect to the primary brown dwarf, it is consistent wit...
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