Using Limb-Darkening to Measure the Masses of Red Giants
Solar and Stellar Astrophysics
2010-11-22 v1
Abstract
We present a novel method for measuring the masses of evolved stars from their limb-darkening observations parameterized as a linear-plus-square-root function with two coefficients. The coefficients of the law are related to integrated moments of the intensity and carry information about the extension of the stellar atmosphere, which is correlated to the ratio of the stellar radius to mass, R/M. Here, we show why the limb-darkening law is related to the R/M, and apply this result to limb-darkening observations of the microlensing event EROS-BLG-2000-5.
Keywords
Cite
@article{arxiv.1011.4387,
title = {Using Limb-Darkening to Measure the Masses of Red Giants},
author = {Hilding R. Neilson and John B. Lester},
journal= {arXiv preprint arXiv:1011.4387},
year = {2010}
}
Comments
2 pages, 1 figure, To appear in the proceedings of Why Galaxies Care About AGB stars II