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The parsec program: a large sample of brown dwarf trigonometric parallaxes
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Journal Article
The parsec program: a large sample of brown dwarf trigonometric parallaxes
2012
Overview
We report on the parsec program, which observed 140 L and T dwarfs on a regular basis from 2007 to 2011, using the WIFI camera on the ESO/2.2 m telescope. Trigonometric parallaxes at 5 mas precision are derived for 49 objects, and mas yr−1-level proper motions are derived for approximately 200,000 objects in the same fields. We discuss image cleaning, object centroiding, and astrometric methods, in particular three different approaches for trigonometric parallax determination.
Publisher
Cambridge University Press
Subject
