%0 Journal Article
%T Predicting Stellar Angular Sizes
%A Kaspar von Braun
%A Tabetha S. Boyajian
%A Gerard T. van Belle
%J Physics
%D 2013
%I arXiv
%R 10.1051/eas/1364079
%X Our survey of long-baseline infrared and optical interferometry measurements is producing considerable numbers of directly determined stellar angular sizes. We use our sample of 124 high-precision (5\%) angular stellar diameter values and correlate them with stellar magnitude values from the literature to produce empirical relations for main-sequence stars between observed apparent magnitudes, stellar colors, and angular sizes (surface brightness relations). We find a significant dependence on stellar metallicity for ($B-V$) colors. The scatter in the calculated relations is small ($\sim$5\%), which makes them a robust tool for the prediction of main-sequence stellar angular sizes based on photometry. We apply these relations via the calculation of the radius of the multiplanet host star GJ 667C.
%U http://arxiv.org/abs/1311.2523v1