We present angular diameters of the Hyades giants, gamma, delta^1, epsilon, and theta^1 Tau from interferometric measurements with the CHARA Array. Our errors in the limb-darkened angular diameters for these stars are all less than 2%, and in combination with additional observable quantities, we determine the effective temperatures, linear radii and absolute luminosities for each of these stars. Additionally, stellar masses are inferred from model isochrones to determine the surface gravities. These data show that a new calibration of effective temperatures with errors well under 100K is now possible from interferometric angular diameters of stars.
Cite
@article{arxiv.0810.2238,
title = {Angular Diameters of the Hyades Giants Measured with the CHARA Array},
author = {Tabetha S. Boyajian and Harold A. McAlister and Justin R. Cantrell and Douglas R. Gies and Theo A. ten Brummelaar and Chris Farrington and P. J. Goldfinger and Laszlo Sturmann and Judit Sturmann and Nils H. Turner and Stephen Ridgway},
journal= {arXiv preprint arXiv:0810.2238},
year = {2011}
}
Comments
Accepted for publication in The Astrophysical Journal