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astro-ph1997
A photometric study of the field RR Lyrae stars AW Dra, AQ Lyr and CN Lyr
V. Castellani, A. Di Paolantonio, A. M. Piersimoni +1
We present CCD lightcurves for the three field RR Lyrae AQ Lyr, CN Lyr and AW Dra observed at the Teramo TNT telescope. Stellar temperatures have been derived from the observed mea…
astro-ph1997
Heavy element diffusion and globular cluster ages
V. Castellani, F. Ciacio, S. Degl'Innocenti +1
This paper discusses low mass, metal poor stars, presenting new evolutionary computations which take into account the inward diffusion of both He and heavy elements during the H bu…
astro-ph1997
Very Low Mass Stars: From Observations to Theory and back
E. Brocato, S. Cassisi, V. Castellani
We briefly review the observational and theoretical investigations on Very Low Mass (VLM) stars. New evolutionary computations, extending toward the lower main sequence previous co…