We have determined the apsidal motion rate of 27 double-lined eclipsing binaries with precise physical parameters. The obtained values, corrected for their relativistic contribution, yield precise empirical parameters of the internal stellar density concentration. The comparison of these results with the predictions based on new theoretical models shows very good agreement. Small deviations are identified but remain within the observational uncertainties and the path for a refined comparison is indicated.
@article{arxiv.2107.10765,
title = {Analysis of apsidal motion in eclipsing binaries using TESS data II. A test of internal stellar structure}},
author = {A. Claret and A. Giménez and D. Baroch and I. Ribas and J. C. Morales and G. Anglada-Escudé},
journal= {arXiv preprint arXiv:2107.10765},
year = {2021}
}
Comments
Accepted publication: Astronomy and Astrophysics 2021