3,094 research outputs found
UVES Abundances of Stars in Nearby Galaxies: How Good are Theoretical Isochrones?
Here we report some results from an ESO-VLT programme to observe individual
stars in nearby dwarf galaxies at high resolution with the UVES spectrograph
(Tolstoy, Venn, Shetrone, Primas, Hill, Kaufer & Szeifert 2002, submitted to
AJ). We mainly concentrate on illustrating the issues and uncertainties
surrounding our efforts to determine the ages of stars for which we have
accurately measured [Fe/H] and [alpha/Fe].Comment: 2 page contribution to conference "New Horizons in Globular Cluster
Astronomy", Padua, June 2002 ed. G. Piotto, G. Meylan, G. Djorgovski, & M.
Riello, ASP Conf. Ser. (2002
Studying the Stellar Populations of the Local Group with VLT
The power of high quality imaging combined with the large collecting area of
each VLT telescope is impressive, and there are clearly many exciting
discoveries waiting to be made. The study of resolved stellar populations will
certainly benefit greatly from this new observatory, as with Palomar before. We
will now be able to probe a much large range of star forming environment within
the Local Group, and specifically very low metallicity regions in nearby dwarf
irregular galaxies. The study of individual stars and star-formation regions in
the nearby universe is the only way we will understand the observations of
galaxy populations at high redshift. We present some initial results from the
BVI imaging of the Local Group galaxy Antlia made during FORS1 science
verification in January 1999.Comment: To appear in the proceedings of the VLT Opening Symposium, held in
Antofagasta, Chile in March 199
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