Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....107..738r&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 107, no. 2, p. 738-741
Astronomy and Astrophysics
Astronomy
10
Abundance, Binary Stars, Convection, Globular Clusters, Metallicity, Stellar Composition, Stellar Envelopes, Stellar Models, Stellar Orbits, Hydrogen, Iron, Stellar Color, Stellar Mass
Scientific paper
Limiting period-color relations for contact binaries of low metal abundance are given. The relations are based on the full convection limit for the more massive components and apply over the range (Fe/H) = -0.47 to (Fe/H) = -2.26. Recently obtained data for W UMa systems in globular clusters NGC 5466 and NGC 4372 are consistent with these limits.
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