Southworth, J, Maxted, PFL and Smalley, B (2003) Eclipsing binaries in open clusters., 318. 218 -?. (Submitted)

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Accurate physical parameters have been determined for two early-type detached eclipsing binaries in the open cluster h Persei (NGC 869). Masses accurate to 1.5% are derived from high-resolution spectroscopy and radii accurate to 4--6% have been obtained from fitting the existing light curves. The four stars are placed in the mass radius plane and compared to the theoretical stellar models of the Granada Group. The best-fitting models have a low metallicity of approximately Z=0.01 and a high helium abundance of Y=0.34. This is the first determination of the bulk metallicity of the Perseus Double Cluster. Recent studies have assumed a solar metallicity so their results should be reviewed.

Item Type: Article
Uncontrolled Keywords: stars: binaries: eclipsing, stars: binaries: close, stars: distances, stars: evolution, stars: abundances, open clusters and associations: general
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 20 Aug 2015 14:19
Last Modified: 10 Jul 2019 14:23

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