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

M. Goto; N. Kobayashi; H. Terada; W. Gaessler; T. Kanzawa; H. Takami; N. Takato; Y. Hayano; Y. Kamata; M. Iye; D. J. Saint-Jacques; A. T. Tokunaga

doi:10.1086/339800

arXiv · astro-ph/0202119

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

M. Goto·N. Kobayashi·H. Terada·W. Gaessler·T. Kanzawa·H. Takami·N. Takato·Y. Hayano·Y. Kamata·M. Iye·D. J. Saint-Jacques·A. T. Tokunaga

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Abstract

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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M. Goto, N. Kobayashi, H. Terada, W. Gaessler, T. Kanzawa, H. Takami, N. Takato, Y. Hayano, Y. Kamata, M. Iye, D. J. Saint-Jacques, A. T. Tokunaga. 2002-02-06. Near-Infrared Adaptive Optics Spectroscopy of Binary Brown Dwarf HD 130948B and C. https://doi.org/10.1086/339800

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