NOAO > Observing Info > Approved Programs > 2010A-0220
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NOAO > Observing Info > Approved Programs > 2010A-0220 |
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PI: Kaspar von Braun, California Institute of Technology, kaspar@caltech.edu
Address: NASA Exoplanet Science Institute, 770 South Wilson Ave, Pasadena, CA 91125, USA
CoI: Gail Schaefer, Georgia State University
CoI: Gerard van Belle, European Southern Observatory
CoI: David R. Ciardi, California Institute of Technology
CoI: Mercedes Lopez-Morales, Carnegie Institution of Washington
Title: Distances to Eclipsing M-Dwarf Binary Systems
Abstract:
Between 2007 and 2009, we obtained trigonometric parallax
measurements on five nearby M-dwarf eclipsing binary systems using the
Fine Guidance Sensor (FGS) aboard the Hubble Space Telescope (HST) with
the principal aim of constraining their luminosities (GO program 11213 --
PI: van Belle). The science driver of this project is the direct
determination of fundamental astrophysical properties of these five
systems to help solve the continuing disagreement between models and
observations for low-mass stars. In this proposal, we request four
nights at WIYN (HYDRA) and four nights at the KP-0.9m to gather vitally
important auxiliary information for our HST data: spectral types,
luminosity classes, and absolute magnitudes of the stars used as
astrometric reference sources with respect to which the parallax angles
of our targets were measured.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
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NOAO > Observing Info > Approved Programs > 2010A-0220 |
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