Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.2205v&link_type=abstract
American Astronomical Society Meeting 208, #22.05; Bulletin of the American Astronomical Society, Vol. 38, p.103
Astronomy and Astrophysics
Astronomy
Scientific paper
According to current structure formation scenarios, dwarf galaxies are the fundamental building blocks of galactic evolution. The surviving systems thereby provide a unique laboratory for detailed studies of the generic galactic assembly process and the chemo-dynamical evolution of the low-mass end of the galaxy luminosity function. Detailed spectra of hundreds of stars in the nearby dwarf galaxies is now possible with the new generation of high quality multi-object spectrographs. Many of these stars are old, and should contain the fossil record of the chemical evolution of their host galaxy. Analyses of these stars show little in common with the chemisty of similar stars in the Galaxy, including the halo and disk components. Only the most metal-poor stars appear to show some similarities, favouring merging at early epochs. The chemistry of extragalactic stars can also be used to test our assumptions about stellar nucleosynthesis.Funding for this project has come from the National Science Foundation AST-9984073 and the Canada Research Chair program.
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