Chemical evolution in the Carina dwarf spheroidal

Koch, Andreas and Grebel, E. K. and Harbeck, Daniel and Wilkinson, M. I. and Kleyna, Jan and Gilmore, G. and Wyse, Rosemary F. G. and Evans, N. W. (2005) Chemical evolution in the Carina dwarf spheroidal. In: Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites :. ESO Astrophysics Symposia . Springer, pp. 249-251. ISBN 9783540341352

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We present metallicities for 487 red giants in the Carina dwarf spheroidal (dSph) galaxy that were obtained from FLAMES low-resolution Ca triplet (CaT) spectroscopy. We find a mean [Fe/H] of –1.91 dex with an intrinsic dispersion of 0.25 dex, whereas the full spread in metallicities is at least one dex. The analysis of the radial distribution of metallicities reveals that an excess of metal poor stars resides in a region of larger axis distances. These results can constrain evolutionary models and are discussed in the context of chemical evolution in the Carina dSph.

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15 Dec 2016 15:30
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16 Jul 2024 03:58