Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..399...70y&link_type=abstract
Panoramic Views of Galaxy Formation and Evolution ASP Conference Series, Vol. 399, proceedings of the conference held 11-16 Dece
Astronomy and Astrophysics
Astronomy
Scientific paper
We evaluate the escape fraction of ionizing photons (f_{esc}) from a high-z proto-galaxy by three dimensional radiative transfer calculations. We use, as a model galaxy, a result of ultra high resolution hydrodynamic simulation by tet{MM06}, which shows Lyman alpha emitter (LAE) feature at z≥ 5.8, and then Lyman break galaxy (LBG) feature at z=5.0-3.7. LAEs and LBGs can be strong ionizing sources in the high-z universe. Therefore it is significant to estimate the f_{esc} of LAEs and LBGs. By distributing interstellar dust consistently with the star formation history and considering the dust extinction, we estimate the f_{esc} of LAEs and LBGs precisely. As a result, we find that the f_{esc} of LAEs and LBGs are quite small (f_{esc} = 1% - 3%).
Mori Masao
Nakamoto Taishi
Umemura Masayuki
Yajima Hidenobu
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