SIMBAD references

2012ApJ...757...42F - Astrophys. J., 757, 42 (2012/September-3)

Reevaluating the mass-radius relation for low-mass, main-sequence stars.


Abstract (from CDS):

We examine the agreement between the observed and theoretical low-mass (<0.8 M) stellar main-sequence mass-radius relationship by comparing detached eclipsing binary (DEB) data with a new, large grid of stellar evolution models. The new grid allows for a realistic variation in the age and metallicity of the DEB population, characteristic of the local galactic neighborhood. Overall, our models do a reasonable job of reproducing the observational data. A large majority of the models match the observed stellar radii to within 4%, with a mean absolute error of 2.3%. These results represent a factor of two improvement compared to previous examinations of the low-mass mass-radius relationship. The improved agreement between models and observations brings the radius deviations within the limits imposed by potential starspot-related uncertainties for 92% of the stars in our DEB sample.

Abstract Copyright:

Journal keyword(s): binaries: eclipsing - stars: evolution - stars: fundamental parameters - stars: low-mass - starspots

Simbad objects: 22

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