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W.-C. Jao, T.J. Henry, J.P. Subasavage, T.D. Beaulieu (Georgia State University), RECONS Team
Subdwarfs are rare among the nearby stars. We present the confirmed cool subdwarfs sample (KM types) within 60 pc based on the trigonometric parallaxes and spectroscopic results. Because there is no known close cool subdwarfs binaries, this sample will be targeted for the future companions searching project by utilizing high resolution techniques, i.e. speckle interferometry and Space Interferometry Mission. We also present the new subdwarfs parallaxes results from CTIOPI (Cerro Tololo Inter-American Observatory Parallax Investigation) and metallicity for these cool subdwarfs by using the NextGen atmosphere model grids.
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Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.