Visual Orbits of Spectroscopic Binaries with the CHARA Array. I. HD 224355
Abstract
We present the visual orbit of the double-lined spectroscopic binary HD 224355 from interferometric observations with the CHARA Array, as well as an updated spectroscopic analysis using echelle spectra from the Apache Point Observatory 3.5m telescope. By combining the visual and spectroscopic orbital solutions, we find the binary components to have masses of M1 = 1.626 +/- 0.005 Msun and M2 = 1.608 +/- 0.005 Msun, and a distance of d = 63.98 +/- 0.26 pc. Using the distance and the component angular diameters found by fitting spectrophotometry from the literature to spectral energy distribution models, we estimate the stellar radii to be R1 = 2.65 +/- 0.21 Rsun and R2 = 2.47 +/- 0.23 Rsun. We then compare these observed fundamental parameters to the predictions of stellar evolution models, finding that both components are evolved towards the end of the main sequence with an estimated age of 1.9 Gyr.
Cite
@article{arxiv.1902.05557,
title = {Visual Orbits of Spectroscopic Binaries with the CHARA Array. I. HD 224355},
author = {Kathryn V. Lester and Douglas R. Gies and Gail H. Schaefer and Christopher D. Farrington and John D. Monnier and Theo ten Brummelaar and Judit Sturmann and Norman Vargas},
journal= {arXiv preprint arXiv:1902.05557},
year = {2019}
}
Comments
Accepted for publication in AJ. 10 pages, 6 figures