SETI public: Homogeneous comparison of directly detected planet candidates: GQ Lup, 2M1207, A

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Astrophysics, abstract
astro-ph/0509906
From: Ralph Neuhaeuser [view email]
Date: Fri, 30 Sep 2005 12:55:09 GMT (28kb)

Homogeneous comparison of directly detected planet candidates: GQ Lup,
2M1207, AB Pic

Authors: Ralph Neuhaeuser (AIU Jena)

Categories: astro-ph

Comments: ESO Workshop Proceedings on Multiple Stars (8 pages w/o figures)

We compile the observational evidence for the three recently presented
planet candidates imaged directly and derive in a homogeneous way their
temperatures and masses. For both AB Pic b and 2M1207 b, we derive a larger
temperature range than in Chauvin et al. (2004, 2005b). AB Pic b appears to
be quite similar as GQ Lup b, but older. According to the Tucson and Lyon
models, all three companions could either be planets or brown dwarfs.
According to the Wuchterl formation model, the masses seem to be below the D
burning limit. We discuss whether the three companions can be classified as
planets, and whether the three systems are gravitationally bound and
long-term stable.

http://arxiv.org/abs/astro-ph/0509906

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