278 citations · 804 across the 10 of their papers we have counts for
5 papers · 1 filter
alpha-element enhanced opacity tables and low-mass metal-rich stellar models
A. Weiss, M. Salaris, J. W. Ferguson +1
We investigate the influence of both a new generation of low-temperature opacities and of various amounts of alpha-element enhancements on stellar evolution models. New stellar mod…
Models for extremely metal-poor halo stars
A. Weiss, H. Schlattl, M. Salaris +2
Two alternative scenarios concerning the origin and evolution of extremely metal-poor halo stars are investigated. The first one assumes that the stars have been completely metal-f…
Homogeneous age dating of 55 Galactic globular clusters. Clues to the Galaxy formation mechanisms
M. Salaris, A. Weiss
We present homogeneous age determinations for a large sample of 55 Galactic globular clusters, which constitute about 30% of the total Galactic population. A study of their age dis…
Atomic diffusion in metal poor stars. The influence on the Main Sequence fitting distance scale, subdwarfs ages and the value of Delta Y/DeltaZ
M. Salaris, M. A. T. Groenewegen, A. Weiss
The effect of atomic diffusion on the Main Sequence (MS) of metal-poor low mass stars is investigated. Since diffusion alters the stellar surface chemical abundances with respect t…
Chemical anomalies in globular cluster red giant stars and the "second parameter" problem
C. Charbonnel, P. A. Denissenkov, A. Weiss
We present the evolution of low mass and low metallicity RGB models computed under the assumption of deep mixing between the convective envelope and the hydrogen burning shell. We…