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astro-ph2000
Metal abundance of the eclipsing binary YZ Cas: discrepancy between atmospheric determinations for the Am component
E. Lastennet, D. Valls-Gabaud, C. Jordi
We review current and new estimates of the eclipsing binary YZ Cassiopeiae metallicity (Z). Since the individual components cover a quite large range of mass (1.35-2.31 Solar masse…
astro-ph2000
Stringent constraints on single-star evolution theory from masses and radii of well-detached binaries in star clusters
E. Lastennet, D. Valls-Gabaud, E. Oblak
Which sample of objects can give strong constraints on single-star evolution theory ? Whilst star cluster members share the same age and the same metallicity, many questions (e.g.…