Spectroscopic Parameters of the Host Stars of Transiting Planets

Details Spectroscopic Parameters of the Host Stars of Transiting Planets Spectroscopic Parameters of the Host Stars of Transiting Planets

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.1903t&link_type=abstract

American Astronomical Society, ESS meeting #2, #19.03

Astronomy and Astrophysics

Astronomy

Scientific paper

In order to determine the masses and radii of extrasolar transiting planets it is essential to know those of the parent stars, which are in turn usually determined from the spectroscopic properties such as temperature, metallicity, and surface gravity. We present preliminary results from a project to redetermine these parameters for many of the known systems in a uniform way based on new and archival spectra, with careful attention to systematics. We constrain the surface gravity (often one of the more poorly determined properties) in the spectroscopic analysis using the mean stellar density that may be obtained directly from the transit lightcurve solutions. Results are compared with the unconstrained solutions, and the impact on the stellar mass and radius is investigated. This research is supported by NASA/Origins grant NNX09AF59G.

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