Theoretical hot horizontal branch stars

Details Theoretical hot horizontal branch stars Theoretical hot horizontal branch stars

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...282..771c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 282, no. 3, p. 771-774

Astronomy and Astrophysics

Astrophysics

20

Horizontal Branch Stars, Hot Stars, Metallicity, Stellar Composition, Stellar Evolution, Stellar Models, Asymptotic Giant Branch Stars, Mathematical Models, Stellar Radiation, Ultraviolet Radiation

Scientific paper

Previous evolutionary computations of horizontal branch stars have been extended to the range of 'thin-envelope', very hot stellar models, in order to make available a homogeneous set of models covering the whole range of theoretical horizontal branch temperatures. We present evolutionary tracks for selected models of various metallicities, intended to represent the theoretical counterpart of hot stars populating extremely blue horizontal branches as well as to provide an input for detailed population synthesis programs devoted to study the origin of the ultraviolet light in old stellar systems. The role of metallicity in governing the evolutionary approach to the asymptotic giant branch and the contribution of the models to the UV flux are both briefly discussed.

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