Analysis of apsidal motion in eclipsing binaries using TESS data II. A test of internal stellar structure

2021/07/22 by A. Claret, A. Giménez, D. Baroch +3 · 1 citation
Physics and Astronomy · #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/202141484

published as Astronomy ans Astrophysics 2021 · Accepted publication: Astronomy and Astrophysics 2021

arxiv created 2021/07/22 · arxiv updated 2021/10/13

Abstract

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.

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• Identifying eclipsing binary stars with TESS data based on a new hybrid deep learning model