Near-Infrared Adaptive Optics Spectroscopy of Binary Brown Dwarf HD 130948B and C

(2)NAOJ; (3)University of Montreal; (4) IfA/UH); A. T. Tokunaga (4) ((1) Subaru Telescope; D. J. Saint-Jacques (3); H. Takami (2); H. Terada (1); M. Goto (1); Mitaka; M. Iye (2)

arxiv: astro-ph/0202119 · v1 · submitted 2002-02-06 · 🌌 astro-ph

Near-Infrared Adaptive Optics Spectroscopy of Binary Brown Dwarf HD 130948B and C

M. Goto (1) , N. Kobayashi (1) , H. Terada (1) , W. Gaessler (1) , T. Kanzawa (1) , H. Takami (2) , N. Takato (2) , Y. Hayano (2)

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Y. Kamata (2) M. Iye (2) D. J. Saint-Jacques (3) A. T. Tokunaga (4) ((1) Subaru Telescope (2)NAOJ Mitaka (3)University of Montreal (4) IfA/UH)

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keywords binaryspectroscopysystemadaptivebrowndwarfnear-infraredoptics

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We present near-infrared spectroscopy of low-mass companions in a nearby triple system HD 130948 (Gliese 564, HR 5534). Adaptive optics on the Subaru Telescope allowed spectroscopy of the individual components of the 0".13 binary system. Based on a direct comparison with a series of template spectra, we determined the spectral types of HD 130948B and C to be L4 +- 1. If we take the young age of the primary star into account (0.3-0.8 Gyr), HD 130948B and C most likely are a binary brown dwarf system.

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Near-Infrared Adaptive Optics Spectroscopy of Binary Brown Dwarf HD 130948B and C

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