Fundamental Properties of Late-Type Stars in Eclipsing Binaries

Abstract

Evidence from the analysis of eclipsing binary systems revealed that late-type stars are larger and cooler than predicted by models, and that this is probably caused by stellar magnetic activity. In this work, we revisit this problem taking into account the advancements in the last decade. We provide and updated a list of 32 eclipsing binary or multiple systems, including at least one star with a mass $\lesssim 0.7$ M${}_{\odot }$ and with mass and radius measured to an accuracy better than 3%. The~comparison with stellar structure and evolution theoretical models reveals an overall discrepancy of about 7% and -4% for the radius and effective temperature, respectively, and that it may be larger than previously found below the full convection boundary. Furthermore, the hypothesis of stellar activity is reinforced by the comparison of different systems with similar components. Further eclipsing binaries with accurately determined masses and radii, and with estimated activity levels, as well as the implementation of magnetic activity in theoretical models will help to improve our knowledge of low-mass stars, which are prime targets for exoplanet surveys.

17 pages, 2 tables, 4 figures. Author version of the manuscript

References in corpus (29)

• The Gaia mission
• The Transiting Exoplanet Survey Satellite
• The Dartmouth Stellar Evolution Database
• New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit
• Second ROSAT all-sky survey (2RXS) source catalogue
• Evolution of low-mass star and brown dwarf eclipsing binaries
• KOI-126: A Triply-Eclipsing Hierarchical Triple with Two Low-Mass Stars
• The CARMENES search for exoplanets around M dwarfs: Different roads to radii and masses of the target stars
• Absolute properties of the low-mass eclipsing binary CM Draconis
• Observational Evidence for Tidal Interaction in Close Binary Systems
• Reevaluating the Mass-Radius Relation for Low-Mass, Main Sequence Stars
• Magnetic Inhibition of Convection and the Fundamental Properties of Low-Mass Stars. II. Fully Convective Main Sequence Stars
• Discovery of a Third Transiting Planet in the Kepler-47 Circumbinary System
• Rotation, inflation, and lithium in the Pleiades
• The EBLM project. II. A very hot, low-mass M dwarf in an eccentric and long period eclipsing binary system from SuperWASP
• Tidal dissipation due to inertial waves can explain the circularization periods of solar-type binaries
• The G+M eclipsing binary V530 Orionis: A stringent test of magnetic stellar evolution models for low-mass stars
• Discovery and Precise Characterization by the MEarth Project of LP 661-13, an Eclipsing Binary Consisting of Two Fully Convective Low-mass Stars
• The compact multiple system HIP 41431
• NGTS clusters survey -- III: A low-mass eclipsing binary in the Blanco 1 open cluster spanning the fully convective boundary
• Orbital and physical parameters of eclipsing binaries from the All-Sky Automated Survey catalogue - X. Three high-contrast systems with secondaries detected with IR spectroscopy
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue -- XII. A sample of systems with $K2$ photometry
• Eclipsing binaries in the open cluster Ruprecht 147. III: The triple system EPIC 219552514 at the main-sequence turnoff
• The TESS light curve of the eccentric eclipsing binary 1SWASP J011351.29+314909.7 -- no evidence for a very hot M-dwarf companion
• Fundamental effective temperature measurements for eclipsing binary stars -- III. SPIRou near-infrared spectroscopy and CHEOPS photometry of the benchmark G0V star EBLM J0113+31
• Eclipsing binaries in the open cluster Ruprecht 147. II: EPIC 219568666
• Eclipsing binaries in the open cluster Ruprecht 147. IV: The active triple system EPIC 219511354
• Testing Low-Mass Stellar Models: Three New Detached Eclipsing Binaries below 0.75 Msun
• The Clusters AgeS Experiment (CASE). VI. Analysis of two detached eclipsing binaries in the Globular Cluster M55

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