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

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

We have measured a trigonometric parallax to the young brown dwarf 2MASSW J1207334-393254. The distance (54.0 [unk]pc) and space motion confirm membership in the TW Hydrae Association. The primary is a sub(-)25 M [unk] brown dwarf. We discuss the "planetary mass" secondary, which is certai...

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Veröffentlicht in:The Astrophysical journal 2007-11, Vol.669 (1), p.L45-L48
Hauptverfasser: Gizis, John E, Jao, Wei-Chun, Subasavage, John P, Henry, Todd J
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Earth, ocean, space
Exact sciences and technology
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Zusammenfassung:We have measured a trigonometric parallax to the young brown dwarf 2MASSW J1207334-393254. The distance (54.0 [unk]pc) and space motion confirm membership in the TW Hydrae Association. The primary is a sub(-)25 M [unk] 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.
ISSN:1538-4357
0004-637X
1538-4357
DOI:10.1086/523271