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The Benchmark Eclipsing Binary V530 Ori: A Critical Test of Magnetic Evolution Models for Low-Mass Stars
Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA..
Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA..
Univ Zagreb, Fac Sci, Dept Phys, Zagreb 10000, Croatia..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Astrophysics.ORCID iD: 0000-0002-2012-7215
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2015 (English)In: Living Together: Planets, Host Stars, and Binaries, 2015, Vol. 496, 169-173 p.Conference paper (Refereed)Text
Abstract [en]

We report accurate measurements of the physical properties (mass, radius, temperature) of components of the G+M eclipsing binary V530 On. The M-type secondary shows a larger radius and a cooler temperature than predicted by standard stellar evolution models, as has been found for many other low-mass stars and ascribed to the effects of magnetic activity and/or spots. We show that models from the Dartmouth series that incorporate magnetic fields are able to match the observations with plausible field strengths of 1-2 kG, consistent with a rough estimate we derive for that star.

Place, publisher, year, edition, pages
2015. Vol. 496, 169-173 p.
, Astronomical Society of the Pacific Conference Series
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:uu:diva-282746ISI: 000369467900024ISBN: 978-1-58381-877-0ISBN: 978-1-58381-876-3OAI: oai:DiVA.org:uu-282746DiVA: diva2:940057
"Living Together: Planets, Host Stars, and Binaries." Litomysl, Czech Republic, 08 - 12 September 2014. Convened in honor of Zdenek Kopal's 100th birthday.
Available from: 2016-06-20 Created: 2016-04-06 Last updated: 2016-06-20Bibliographically approved

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