Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.311..111m&link_type=abstract
Astrophysics and Space Science, Volume 311, Issue 1-3, pp. 111-115
Astronomy and Astrophysics
Astrophysics
4
Galaxy Formation, Chemical Evolution, Hydrodynamics
Scientific paper
Ultra-high resolution hydrodynamic simulations using 10243 grid points are performed of early supernova burst in a forming galaxy, with properties similar to those inferred for Lyman α emitters (LAEs) and Lyman Break Galaxies (LBGs). We show that, at the earliest stages of less than 300 Myr, continual supernova explosions produce multitudinous hot bubbles and cooled H(I) shells in-between. The H(I) shells radiate intense Lyman α (Ly α) emission like LAEs. We found that the bubbly structures produced are quite similar to the observed features in the Ly α surface brightness distribution of the extended LAEs. After 1 Gyr, the galaxies are dominated by stellar continuum radiation and then resemble the LBGs. At this point, the abundance of heavy elements appears to be solar. After 13 Gyr, these galaxies resemble present-day ellipticals.
Mori Masao
Umemura Masayuki
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