The EBLM Project -- From False Positives to Benchmark Stars and Circumbinary Exoplanets

2023/11/28 by P. F. L. Maxted, A. H. M. J. Triaud, Maxted, P. F. L. +3 · 1 citation
Physics and Astronomy · #Stellar, planetary, and galactic studies #Astronomy and Astrophysical Research #Adaptive optics and wavefront sensing

paper · doi:10.48550/arxiv.2311.16677

Abstract

The EBLM project aims to characterise very low-mass stars that are companions to solar-type stars in eclipsing binaries. We describe the history and motivation for this project, the methodology we use to obtain precise mass, radius and effective temperature estimates for very low-mass M-dwarfs, and review results of the EBLM study and those from related projects. We show that radius inflation in fully-convective stars is a more subtle effect than was previously thought based on less precise measurements, i.e. the mass-radius-effective temperature relations we observe for fully-convective stars in single-line eclipsing binaries show reasonable agreement with theoretical models, particularly if we account for the M-dwarf metallicity, as inferred from the analysis of the primary star spectrum.

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• NGTS-EB-8: A double-lined eclipsing M+M binary discovered by citizen scientists

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