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The parsec program: a large sample of brown dwarf trigonometric parallaxes
Published online by Cambridge University Press: 26 February 2013
Abstract
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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.
- Type
- Contributed Papers
- Information
- Proceedings of the International Astronomical Union , Volume 8 , Symposium S289: Advancing the Physics of Cosmic Distances , August 2012 , pp. 48 - 51
- Copyright
- Copyright © International Astronomical Union 2013
References
Bucciarelli, B., Andrei, A. H., Smart, R. L., et al. 2010, Journees Systeme de Reference Space–Temporel 2010, p. 105Google Scholar
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