The Y2 Isochrones: Extreme Horizontal Branch Stars and Related Objects (Guest Editor: P.F.L. Maxted)

Authors: Yi, Sukyoung K.1; demarque, Pierre2; Kim, Yong-Cheol3

Source: Astrophysics and Space Science, Volume 291, Number 3, 2004 , pp. 261-262(2)

Publisher: Springer

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We present a new set of isochrones in which the effect of the α-element enhancement is fully incorporated. The isochrone tables, together with interpolation routines in age and chemical composition, and in [α/Fe] are available on request as well as from the electronic version of our ApJ papers. Newly derived ages of Galactic globular clusters using these isochrones are 20 to 30% smaller than previous estimates.

Keywords: stellar evolution

Document Type: Research Article


Affiliations: 1: University of Oxford, Keble Road, Oxford OX1 3RH, UK., Email: 2: Department of Astronomy, Yale University, New Haven, CT 06520-8101, U.S.A. 3: Department of Astronomy, Yonsei University, Seoul 120-749, Korea

Publication date: January 1, 2004

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