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

Maxted, Pierre F. L.; Triaud, Amaury H. M. J.; Martin, David V.

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 the precise mass, radius, and effective temperature estimates for very-low-mass M dwarfs, and review the 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 what 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 the theoretical models, particularly if we account for the M-dwarf metallicity, as inferred from the analysis of the primary star spectrum.

Citation

Maxted, P. F. L., Triaud, A. H. M. J., & Martin, D. V. (in press). The EBLM Project—From False Positives to Benchmark Stars and Circumbinary Exoplanets. Universe, 9(12), Article 498. https://doi.org/10.3390/universe9120498

• Journal Article Type: Article
• Acceptance Date: Nov 20, 2023
• Online Publication Date: Nov 29, 2023
• Deposit Date: Dec 11, 2023
• Journal: Universe
• Print ISSN: 2218-1997
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 9
• Issue: 12
• Article Number: 498
• DOI: https://doi.org/10.3390/universe9120498
• Keywords: General Physics and Astronomy