Journal Article

New limb-darkening coefficients and synthetic photometry for model-atmosphere grids at Galactic, LMC and SMC abundances

Ian D. Howarth

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 413, issue 3, pages 1515-1523
Published in print May 2011 | ISSN: 0035-8711
Published online May 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.18122.x
New limb-darkening coefficients and synthetic photometry for model-atmosphere grids at Galactic, LMC and SMC abundances

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New grids of atlas9 models have been calculated using revised convection parameters and updated opacity-distribution functions (ODFs), for chemical compositions intended to be representative of solar, [M/H] =+0.3, +0.5, Large Magellanic Cloud and Small Magellanic Cloud abundances. The grids cover Teff= 3.5–50 kK, from log g= 5.0 to the effective Eddington limit. Limb-darkening coefficients and synthetic photometry are presented in the UBVRIJHKLM, uvby, ugriz, WFCAM, Hipparcos/Tycho and Kepler passbands for these models and for Castelli’s comparable ‘new-ODF’ grids. Flux distributions are given for the new models. The sensitivity of limb-darkening coefficients to the adopted physics is illustrated.

Keywords: stars: atmospheres; binaries: eclipsing; planetary systems

Journal Article.  5928 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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