Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008asthe.101..115k&link_type=abstract
The Astronomical Herald (ISSN 0374-2466), Vol. 101, No. 3, p. 115 - 125 (2008)
Astronomy and Astrophysics
Astronomy
Galaxies:Evolution
Scientific paper
How do galaxies form and evolve? Stars are like fossils; the history of a galaxy is imprinted on the kinematics and elemental abundances of the stars. The internal structures of galaxies are being observed with integral field spectrographs, and detailed observations for galactic archaeology in the Local Group will be obtained with multiobject spectroscopy and space astrometry missions. To clarify the underlying physical processes from such observational data, the author simulates the chemodynamical evolution of galaxies including star formation, supernovae, and chemical enrichment. Stars in present-day massive galaxies formed in smaller galaxies at high redshifts, despite their late assembly times. Galactic winds blow efficiently from low mass galaxies aand eject heavy elements into the intergalactic medium, which results in the observed mass-metallicity relations of galaxies.
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