Report on the ESO-Arectri Workshop "Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites"

Details Report on the ESO-Arectri Workshop "Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites" Report on the ESO-Arectri Workshop "Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites"

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004msngr.118...66r&link_type=abstract

The Messenger, vol. 118, p. 66-67

Computer Science

Scientific paper

Between 13 and 17 September 2004, an ESO-Arcetri workshop took place in Castiglione della Pescaia, a middle age village in the south of Toscana, on the beautiful coast of Maremma. Thanks to the advent of 8 m class telescopes and efficient high resolution spectrographs, detailed chemical composition can now be obtained for stars of different masses and evolutionary stages, both in our Galaxy and in its neighborhood satellites, and the VLT with FLAMES and UVES is providing a wealth of high quality data. Chemical abundance ratios and patterns represent key fossil records that can reveal the complex chemical history of the stellar aggregate out of which stars formed; if correctly interpreted, measured abundances will allow us to derive the star formation history and evolution of the host galaxies. As a crucial step, however, we must first ensure that the abundances presently observed in the stellar atmospheres are the pristine ones. We must therefore first understand stellar mixing, a phenomenon present in most stars which may affect not only the surface abundances of the fragile elements, such as lithium and beryllium, but also the most commonly studied heavier elements.

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