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Radiative properties of the first galaxies: Rapid transition from blue to red

  • Shohei Arata (a1), Hidenobu Yajima (a2), Kentaro Nagamine (a1) (a3) (a4), Yuexing Li (a5) and Sadegh Khochfar (a6)...

Abstract

Combining cosmological hydrodynamic simulations and radiative transfer (RT) calculations, we present predictions of multi-wavelength radiative properties of the first galaxies at z ∼ 6–5. We find that intermittent star formation due to supernova (SN) feedback causes the escape fraction of UV photons to fluctuate rapidly, which then produces the observed diversity of SEDs for high-z galaxies. The simulated galaxies make rapid transition between UV-bright and IR-bright phase, and our RT calculations suggest that dust temperatures in the first galaxies are higher than z < 3 galaxies with ∼ 60 K.

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Radiative properties of the first galaxies: Rapid transition from blue to red

  • Shohei Arata (a1), Hidenobu Yajima (a2), Kentaro Nagamine (a1) (a3) (a4), Yuexing Li (a5) and Sadegh Khochfar (a6)...

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