The Galactic globular cluster system - Theoretical constraints for alpha-enhanced compositions
This paper discusses synthetic horizontal branches constructed from a grid of horizontal-branch (HB) evolutionary tracks with the alpha-elements enhanced by a factor of 5 with respect to the solar-scaled mixture and various surface helium and heavy-element abundances. The luminosity log L(3.83) and the luminosity-to-mass ratio A(3.83) of the ZAHB
Bencivenni, D. et al.
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10
1991