Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21642507v&link_type=abstract
American Astronomical Society, AAS Meeting #216, #425.07; Bulletin of the American Astronomical Society, Vol. 41, p.839
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
Formation, evolution, and radiation environment of extrasolar planets are sensitively dependent on the astrophysical properties of the respective parent star, including location and size of the habitable zone. The determination of these stellar astrophysical parameters is therefore critical to insights into exoplanet characterization. We use data obtained with the Palomar Testbed Interferometer coupled with Hipparcos parallaxes to directly measure linear radii of about 15 nearby, bright exoplanet hosting stars. The knowledge of stellar radii allows for determination of effective temperatures by means of spectral energy distribution fitting. Finally, we use literature log g values, combined with our directly determined radii, to determine stellar masses. In our presentation, we show the values of the stellar parameters and compare them to literature values calculated in a different manner.
Ciardi David R.
van Belle Gerard T.
von Braun Kaspar
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