Magnetic field induced radius inflation of low-mass stars

G.A. Feiden; B. Chaboyer

doi:10.1051/eas/1364017

All issues

Volume 64 (2013)

EAS Publications Series, 64 (2013) 127-130

Abstract

Issue		EAS Publications Series Volume 64, 2013 Setting a New Standard in the Analysis of Binary Stars


Page(s)		127 - 130
Section		Setting a New Standard in the Analysis of Intermediate and Low-Mass Binaries
DOI		https://doi.org/10.1051/eas/1364017
Published online		25 February 2014

Setting a New Standard in the Analysis of Binary Stars
K. Pavlovski, A. Tkachenko and G. Torres (eds)
EAS Publications Series, 64 (2013) 127-130

Magnetic field induced radius inflation of low-mass stars

G.A. Feiden¹^,2 and B. Chaboyer²

¹ Dept. of Physics & Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
² Dept. of Physics & Astronomy, Dartmouth College, 6127 Wilder Laboratory, Hanover, NH 03755, USA

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.