The number of stellar angular diameter measurements has greatly increased over the past few years due to innovations and developments in the field of long baseline optical interferometry. We use a collection of high-precision angular diameter measurements for nearby, main-sequence stars to develop empirical relations that allow the prediction of stellar angular sizes as a function of observed photometric color. These relations are presented for a combination of 48 broadband color indices. We empirically show for the first time a dependence on metallicity of these relations using Johnson (B-V) and Sloan (g-r) colors. Our relations are capable of predicting diameters with a random error of less than 5% and represent the most robust and empirical determinations of stellar angular sizes to date. © 2014. The American Astronomical Society. All rights reserved..
Publication Source (Journal or Book title)
Boyajian, T., Van Belle, G., & Von Braun, K. (2014). Stellar diameters and temperatures. IV. Predicting stellar angular diameters. Astronomical Journal, 147 (3) https://doi.org/10.1088/0004-6256/147/3/47