Bibcode
Caputo, F.; de Stefanis, P.; Paez, E.; Quarta, M. L.
Bibliographical reference
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 68, no. 1, Feb. 1987, p. 119-140.
Advertised on:
2
1987
Citations
31
Refereed citations
27
Description
Synthetic horizontal branches, constructed on the basis of Sweigart and
Gross (1976) horizontal branch star models and of the recently revised
theoretical instability strip (Stellingwerf, 1984) are presented for
various chemical compositions appropriate for Population II systems, for
various assumptions on the mass size of the helium core and for cluster
age in the range of 12 - 15 billion years. Some selected data, related
with the pulsational properties of RR Lyrae pulsators and with the
horizontal branch morphology, are analysed and compared with observed
horizontal branches.