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8 papers · 1 filter
A pulsational approach to the luminosity of Horizontal Branch stellar structures
R. De Santis, S. Cassisi
We discuss an alternative approach to constrain the absolute bolometric luminosity of Zero Age Horizontal Branch structures by using the observational pulsational properties of ab…
Predicted HST FOC and broad band colours for young and intermediate Simple Stellar Populations
E. Brocato, V. Castellani, G. Raimondo +1
This paper presents theoretical HST and broad band colours from population synthesis models based on an homogeneous set of stellar evolutionary tracks as computed under canonical (…
Stellar populations in the dwarf spheroidal galaxy Leo I
F. Caputo, S. Cassisi, M. Castellani +2
We present a detailed study of the color magnitude diagram (CMD) of the dwarf spheroidal galaxy Leo I, based on archival Hubble Space Telescope data. Our photometric analysis, conf…
Galactic Globular Cluster Stars: from Theory to Observation
S. Cassisi, V. Castellani, S. Degl'Innocenti +2
We use evolutionary calculations presented in a recent paper (Cassisi et al. 1998) to predict B,V,I magnitudes for stars in galactic globulars. The effect of the adopted mixing len…
On the Blue Tail of Horizontal Branch Stars
G. Bono, S. Cassisi
We discuss theoretical predictions for ZAHB models constructed either by including or neglecting the He extra-mixing effect recently suggested by Sweigart (1997). The comparison in…
s-process nucleosynthesis of 142^Nd: crisis of the classical model
C. Arlandini, F. Kaeppeler, K. Wisshak +4
The recently improved information on the stellar neutron capture cross sections of neutron magic nuclei at N = 82, and in particular for 142^Nd, turned out to represent a sensitive…