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Determining the Ages of Nearby A-Stars with Long-Baseline Interferometry

Published online by Cambridge University Press:  27 January 2016

Jeremy Jones ,
R. J. White ,
T. Boyajian ,
G. Schaefer ,
E. Baines ,
M. Ireland ,
J. Patience  and
The CHARA Team
Jeremy Jones
Affiliation:
Georgia State University
R. J. White
Affiliation:
Georgia State University
T. Boyajian
Affiliation:
Yale University
G. Schaefer
Affiliation:
Georgia State University
E. Baines
Affiliation:
Naval Research Laboratory
M. Ireland
Affiliation:
Australian National University
J. Patience
Affiliation:
Arizona State University email: [email protected]
The CHARA Team
Affiliation:
Georgia State University
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Abstract

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We determine the age of 7 stars in the Ursa Major moving group using a novel method that models the fundamental parameters of rapidly rotating A-stars based on interferometric observations and literature photometry and compares these parameters (namely, radius, luminosity, and rotation velocity) with evolution models that account for rotation. We find these stars to be coeval, thus providing an age estimate for the moving group and validating this technique. With this technique validated, we determine the age of the rapidly rotating, directly imaged planet host star, κ Andromedae.

Keywords

techniques: interferometricstars: early-typestars: evolutionstars: individual (κ And)stars: rotation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S314: Young Stars & Planets Near the Sun , November 2015 , pp. 119 - 120
Copyright
Copyright © International Astronomical Union 2016 

References

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Jones, J., et al. 2015, ApJ, submittedGoogle Scholar
King, J. R., et al. 2003, AJ, 125, 1980Google Scholar