Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.mso.anu.edu.au/~chiaki/works/TEN80301.pdf Дата изменения: Fri Feb 8 09:55:15 2008 Дата индексирования: Tue Oct 2 02:48:38 2012 Кодировка: Поисковые слова: star formation

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Chemodynamical Simulations of Galaxies
Chiaki KOBAYASHI National Astronomical Observatory of Japan, 2 21 1 Osawa, Mitaka-shi, Tokyo 181 8588, Japan Abstract : 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, we simulate 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 e$ciently from low mass galaxies and eject heavy elements into the intergalactic medium, which results in the observed mass-metallicity relations of galaxies.

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