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OATS-DAUT SEMINAR
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Speaker:
Takuma Suda (Keele University, UK)
Title:
Galactic archeology with stellar evolution
Date: Wednesday, January 21st, 2009
Time: 12:00
Venue: Villa Bazzoni
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Abstract:
Element abundances in stars are important tracers of chemical history of
the universe. Thanks to the many efforts of scientists deriving them from
stellar spectra, we have plenty of data on stellar chemical composition to
discuss about the evolution of our Galaxy. In this talk, I will report the
recent progress in research on the chemical evolution of our Galaxy based
on stellar evolution. The topics of the talk will be:
- stellar evolution of low- and intermediate-mass stars at low metallicity
- origin of the most iron-deficient stars in our Galaxy -- search for the
first stars in the universe that have survived
- initial mass function in the early universe derived from the comparison
of observed abundances with stellar evolution theory
- chemical evolution of our Galaxy using the merger tree
- recent discoveries on the characteristics of metal-poor stars using the
database on observed abundances of metal-poor halo stars (SAGA database,
http://saga.sci.hokudai.ac.jp)
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contact: Francesca Matteucci (DAUT)