Escape fraction of ionizing photons from high z laes and lbgs
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1:University of Tsukuba. 2:Tokyo institute of technology. Escape fraction. Dust-free case. Dust-included case. log 10 XHI. -8. -4. 0. Escape fraction of ionizing photons from high-z LAEs and LBGs. ★ H. Yajima 1 , M. Umemura 1 , M. Mori 1 , T. Nakamoto 2. Model galaxy(Mori&Umemura 2006).

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Escape fraction of ionizing photons from high-z LAEs and LBGs

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Escape fraction of ionizing photons from high z laes and lbgs

1:University of Tsukuba

2:Tokyo institute of technology

Escape fraction

Dust-free case

Dust-included case

log10XHI

-8

-4

0

Escape fraction of ionizing photons from high-z LAEs and LBGs

★H. Yajima1, M. Umemura1, M. Mori1, T. Nakamoto2

Model galaxy(Mori&Umemura 2006)

●High-z LAEs and LBGs can be major ionizing sources in the cosmic reionization era.

●Solving three dimensional radiation transfer (RT) equation, we estimate the escape fraction of ionizing photons from LAEs and LBGs.

●Interstellar dust absorbs the ionizing photons effectively and decline the escape fraction.

●However,High-z LAEs and LBGs have a large escape fraction (~15%-45%).

Star

gas

Z/Zsun

RT cal.

Result: Ionization structure

LAE phase

z=7.0

z=5.8

LBG phase

LAEs

z=3.7

z=5.0

LBGs

LAE phase

LBG phase


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