Horizontal branch morphology and Hβ indices of globular clusters.

Details Horizontal branch morphology and Hβ indices of globular clusters. Horizontal branch morphology and Hβ indices of globular clusters.

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...302..718d&link_type=abstract

Astronomy and Astrophysics, v.302, p.718

Astronomy and Astrophysics

Astrophysics

37

Globular Clusters, Stars: Horizontal Branch

Scientific paper

Through the analysis of galactic globular clusters data we show that the integrated Hβ index is well represented by a bivariate function of metallicity and a parameter describing the horizontal branch morphology. The present results indicate that blue horizontal branch and blue tail stars may give a substantial contribution to the Hβ strength. Metallicity indices were synthesized using observed stellar populations in clusters, in order to provide a quantitative estimate of such a contribution.

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