Status Report

Relation between Brown Dwarfs and Exoplanets

By SpaceRef Editor
July 30, 2016
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Lauren Melissa Flor Torres, Roger Coziol, Klauss-Peter Schröeder, César A. Caretta, Dennis Jack
(Submitted on 27 Jul 2016)

One of the most debated subjects in Astronomy since the discovery of exoplanets is how can we distinguish the most massive of such objects from very-low mass stars like Brown Dwarfs (BDs)? We have been looking for evidences of a difference in physical characteristics that could be related to different formation processes. Using a new diagnostic diagram that compares the baryonic gravitational potential (BGP) with the distances from their host stars, we have classified a sample of 355 well-studied exoplanets according to their possible structures. We have then compared the exoplanets to a sample of 87 confirmed BDs, identifying a range in BGP that could be common to both objects. By analyzing the mass-radius relations (MRR) of the exoplanets and BDs in those different BGP ranges, we were able to distinguish different characteristic behaviors. By comparing with models in the literature, our results suggest that BDs and massive exoplanets might have similar structures dominated by liquid metallic hydrogen (LMH).

Comments: Poster #149 from proceeding of The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun; 06-10 June 2016, Uppsala, Sweden
Subjects: Earth and Planetary Astrophysics (astro-ph.EP)
DOI: 10.5281/zenodo.58717
Cite as: arXiv:1607.07922 [astro-ph.EP] (or arXiv:1607.07922v1 [astro-ph.EP] for this version)
Submission history
From: Lauren Melissa Flor Torres
[v1] Wed, 27 Jul 2016 00:36:48 GMT (91kb,D)

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