File:An unusual Brown Dwarf (noaoann10016a).jpg

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As part of the Gemini South NICI Planet-finding campaign, Beth Biller and team have found an unusual star-brown dwarf pair.

Summary[edit]

Description
English: As part of the Gemini South NICI Planet-finding campaign, Beth Biller and team have found an unusual star-brown dwarf pair. PZ Tel A, a young sun-like star, was imaged with NICI (Near-Infrared Coronagraphic Imager) using adaptive optics to detect the brown dwarf (PZ Tel B), which is in a highly elliptical orbit. Specialized image analysis techniques were used to remove a vast majority of light from PZ Tel A in this image (left). This is one of few brown dwarfs imaged at a distance closer than 30 Astronomical Units from its parent star. On the right the range of sizes of a brown dwarf compared to Jupiter and the Earth (to scale) is illustrated. Results are being published in ApJ letters 2010 ApJ 720 L82.
Date 30 September 2010 (upload date)
Source An unusual Brown Dwarf
Author B. Billar, M. Liu & NICI Campaign Team (left); J. Lomberg & Gemini Observatory (right)
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