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arXiv · 0709.1178

The Trigonometric Parallax of the Brown Dwarf Planetary System 2MASSW J1207334-393254

John E. Gizis·Wei-Chun Jao·John P. Subasavage·Todd J. Henry
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Abstract

We have measured a trigonometric parallax to the young brown dwarf 2MASSW J1207334-393254. The distance [54.0 (+3.2,-2.8) pc] and space motion confirm membership in the TW Hydrae Association. The primary is a ~25 M_jup brown dwarf. We discuss the "planetary mass" secondary, which is certainly below the deuterium-burning limit but whose colors and absolute magnitudes pose challenges to our current understanding of planetary-mass objects.

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John E. Gizis, Wei-Chun Jao, John P. Subasavage, Todd J. Henry. 2007-09-08. The Trigonometric Parallax of the Brown Dwarf Planetary System 2MASSW J1207334-393254. https://doi.org/10.1086/523271

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