Simulations of Cosmic Chemical Enrichment

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We simulate cosmic chemical enrichment with a hydrodynamical Model including supernova and hypernova feedback. We find that the majority of stars in present-day massive, galaxies formed in much Smaller galaxies at high redshifts, despite their late assembly times. As a result, the observed cosmic star formation rates and stellar density evolution are well reproduced simultaneously. The hypernova feedback drives galactic outflows efficiently in low-mass galaxies, and these winds eject heavy elements into the intergalactic medium. The ejected baryon fraction is larger for less massive galaxies and correlates well with Stella], metallicity. The observed mass-metallicity relation is well reproduced as a result of the mass-dependent galactic winds.

Original languageEnglish
Title of host publicationPanoramic Views of Galaxy Formation and Evolution
EditorsT Kodama, T Yamada, K Aoki
PublisherAstronomical Society of the Pacific
Number of pages2
ISBN (Print)978-1-58381-668-4
Publication statusPublished - 2008
EventInternational Conference on Panoramic Views of Galaxy Formation and Evolution - Hayama
Duration: 11 Dec 200716 Dec 2007

Publication series

NameASP Conf Series


ConferenceInternational Conference on Panoramic Views of Galaxy Formation and Evolution


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