Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..240..211v&link_type=abstract
Binary Stars as Critical Tools and Tests in Contemporary Astrophysics, International Astronomical Union. Symposium no. 240, he
Astronomy and Astrophysics
Astrophysics
Scientific paper
Programs for modeling binary star observables compute emergent intensity as it varies with temperature, gravity, composition, and direction. With arrival of huge datasets from Gaia and other surveys, the benefits of fast, compact, and accurate computation of atmospheric radiation is likely to remain critical for the foreseeable future. Experience has shown that accurate radiative modeling is important for good parameter estimation. Here we discuss the atmosphere and limb darkening treatment in the Wilson-Devinney (WD) binary star program, its use of Kurucz atmosphere models, and its efficient computation of bandpass-specific output. The procedure should easily be adaptable to other light curve programs. We also describe a way for anyone to add bands without sacrifice of portability or program unity. We expect the new bandpass options to become part of the public WD program (via anonymous FTP from ftp.astro.ufl.edu, directory pub/wilson/) reasonably soon. Additional limb darkening tables will be placed at http://www.fiu.edu/~vanhamme/limdark.htm.
van Hamme Walter
Wilson Robert E.
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