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astro-ph2004
Quantifying the uncertainties of chemical evolution studies. I. The stellar initial mass function and the stellar lifetimes
Donatella Romano, Cristina Chiappini, Francesca Matteucci +1
The stellar initial mass function and the stellar lifetimes are basic ingredients of chemical evolution models, for which different recipes can be found in the literature. In this…
astro-ph2003
Rotation of Hot Horizontal Branch Stars in Galactic Globular Clusters
A. Recio-Blanco, G. Piotto, A. Aparicio +1
We present high resolution UVES+VLT spectroscopic observations of 61 stars in the extended blue horizontal branches of the Galactic globular clusters NGC 1904 (M79), NGC 2808, NGC…
astro-ph1999
Stellar populations in the Phoenix dwarf galaxy
Enrico V. Held, Ivo Saviane, Yazan Momany
We have obtained deep BVI CCD photometry of Phoenix, a galaxy considered a transition case between dwarf spheroidal and dwarf irregular galaxies. A comparison of our data with the…