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The reionization times of z=0 galaxies

Published online by Cambridge University Press:  08 May 2018

Dominique Aubert*
Affiliation:
Universite de Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550, F-67000 Strasbourg, France email: dominique.aubert@astro.unistra.fr
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Abstract

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We study the inhomogeneity of the reionization process by comparing the reionization times of z = 0 galaxies as a function of their mass. For this purpose, we combine the results of the CODA-I AMR radiative hydrodynamics simulation of the Reionization with the halo merger trees of a pure dark matter tree-code z = 0 simulation evolved from the same set of initial conditions. We find that galaxies with M(z = 0) > 1011M are reionized earlier than the whole Universe, with e.g. MW-like haloes reionized between 100 and 300 million years before the diffuse IGM. Lighter galaxies reionized as late as the global volume, probably from external radiation.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2018 

References

Aubert, D., Deparis, N., & Ocvirk, P., 2015, MNRAS, 454, 1012CrossRefGoogle Scholar
Brown, T. M., Tumlinson, J., Geha, M., et al. 2014, APJ, 796, 91Google Scholar
Gottloeber, S., Hoffman, Y. & Yepes, G. 2010, ArXiv e-prints, arXiv:1005.2687Google Scholar
Ocvirk, P. & Aubert, D., 2011, MNRAS, 417, L93Google Scholar
Springel, V., 2005, MNRAS, 364, 1105CrossRefGoogle Scholar