Level of helium enhancement among M3’s horizontal branch stars

A. A. R. Valcarce; M. Catelan; J. Alonso-García; R. Contreras Ramos; S. Alves

doi:10.1051/0004-6361/201526387

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Volume 589 (May 2016)

A&A, 589 (2016) A126

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Fig. 2

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Same as Fig. 1, but for the HST F336W vs. (F336W−F555W) plane. Theoretical models for M_HB = 0.665 and 0.632M_⊙ are not shown here for clarity (see Fig. 3). The observational data are the same as in D13, as kindly provided by E. Dalessandro (priv. comm.).

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