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Stellar models of ε Eridani constrained by stellar seismology

Published online by Cambridge University Press:  03 August 2017

D. B. Guenther
D. B. Guenther*
Affiliation:
Center for Solar and Space Research, Yale Department of Astronomy, New Haven, CT 06511 USA

Abstract

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Because Epsilon Eridani (Z = 0.013) appears about 0.2 mag above the Z = 0.02 zero-age main sequence, zero-age models of Epsilon Eridani must be evolved off the ZAMS to ages much older than its rapid rotation and high chromospheric activity suggests. To resolve this conflict we propose that either Epsilon Eridani is part of a binary system or that its metal content has been underestimated. To test these hypotheses we use not only the stellar constraints of luminosity and effective temperature but also impose that the characteristic frequency spacing of the oscillation spectra of the models match the value observed by Noyes et al. (1984).

Type
Chapter 4: Asteroseismology: Results and Prospects
Information
Symposium - International Astronomical Union , Volume 123: Advances In Hello- and Asteroseismology , 1988 , pp. 285 - 286
Copyright
Copyright © Reidel 1988 

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