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On the evolution of the Horizontal Branch stars of metal-poor Globular Clusters

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Abstract

The actual knowledge on Horizontal Branch stars of the metal-poor Globular Clusters of our Galaxy suggests that these stars evolve along the Horizontal Branch from the very blue stars towards lower effective temperature.

From this behaviour it follows that a substantial mass loss occurs at the He-flash. On the basis of a gravitational thermalization of Horizontal Branch stars any recent observational data concerning NGC 7006 are re-examined. It is pointed out that today it is not necessary to leave the hypothesis of a strong correlation between the metal and helium content for our Galaxy.

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Authors and Affiliations

  1. Laboratorio di Astrofisica dell' Università di Roma, Frascati (Roma), Italy

    V. Castellani & A. Renzini

Authors
  1. V. Castellani
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  2. A. Renzini
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Castellani, V., Renzini, A. On the evolution of the Horizontal Branch stars of metal-poor Globular Clusters. Astrophys Space Sci 2, 310–314 (1968). https://doi.org/10.1007/BF00650907

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  • DOI: https://doi.org/10.1007/BF00650907

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