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

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.

6 pages, 3 figures, accepted for publication in ApJ Letters

References in corpus (4)

• Towards Spectral Classification of L and T Dwarfs: Infrared and Optical Spectroscopy and Analysis
• Infrared Spectra and Spectral Energy Distributions of Late-M- and L-Dwarfs
• The Missing Link: Early Methane ("T") Dwarfs in the Sloan Digital Sky Survey
• Near-Infrared Spectral Classification of late-M and L Dwarfs

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