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Magnetic field induced radius inflation of low-mass stars

Published online by Cambridge University Press:  25 February 2014

G.A. Feiden  and
B. Chaboyer
G.A. Feiden
Affiliation:
Dept. of Physics & Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden Dept. of Physics & Astronomy, Dartmouth College, 6127 Wilder Laboratory, Hanover, NH 03755, USA
B. Chaboyer
Affiliation:
Dept. of Physics & Astronomy, Dartmouth College, 6127 Wilder Laboratory, Hanover, NH 03755, USA
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Abstract

We present results obtained using the magnetic Dartmouth stellar evolution code that address the possibility that magnetic fields are inflating low-mass stars in detached eclipsing binaries. While it seems plausible that magnetic fields are inflating stars with radiative cores, the level of inflation observed among fully convective stars appears too large to be explained by magnetic fields. We provide an alternative explanation, stellar metallicity, and propose observations that can help further constrain stellar models.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 64: Setting a New Standard in the Analysis of Binary Stars , 2013 , pp. 127 - 130
Copyright
© EAS, EDP Sciences, 2014

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References

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