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AK Sco: a tidally induced atmospheric dynamo in a pre-main sequence binary?

Gómez de Castro, Ana Inés (2009) AK Sco: a tidally induced atmospheric dynamo in a pre-main sequence binary? In Cool stars, stellar systems and the sun. American Institute of Physics, pp. 313-316. ISBN 978-0-7354-0627-8

Official URL: http://proceedings.aip.org/resource/2/apcpcs/1094/1/313_1?isAuthorized=no

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Abstract

AK Sco is a unique source: a 10-30 Myrs old pre-main sequence spectroscopic binary composed by two nearly equal F5 stars that at periastron are separated by barely eleven stellar radii so, the stellar magnetospheres fill the Roche lobe at periastron. The orbit is not yet circularized (e=0.47) and very strong tides are expected. This makes of AK Sco, the ideal laboratory to study the effect of gravitational tides in the stellar magnetic field building up during pre-main sequence evolution. Evidence of this effect is reported in this contribution.


Item Type:Book Section
Additional Information:

15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, JUL 21-25, 2008, St Andrews, SCOTLAND

Uncontrolled Keywords:Stars: pre-main sequence; stars: magnetic fields; binaries: spectroscopic
Subjects:Sciences > Mathematics > Astronomy
ID Code:15993
Deposited On:18 Jul 2012 10:31
Last Modified:18 Jul 2012 10:31

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