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arXiv · 1510.07047

Limits on Intergalactic Dust During Reionization

Nia Imara·Abraham Loeb
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Abstract

In this Letter, we constrain the dust-to-gas ratio in the intergalactic medium (IGM) at high redshifts. We employ models for dust in the local Universe to contrain the dust-to-gas ratio during the epoch of reionization at redshifts z ~ 6-10. The observed level of reddening of high redshift galaxies implies that the IGM was enriched to an intergalactic dust-to-gas ratio of less than 3% of the Milky Way value by a redshift of z=10.

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Nia Imara, Abraham Loeb. 2015-10-23. Limits on Intergalactic Dust During Reionization. https://doi.org/10.3847/2041-8205%2F816%2F1%2Fl16

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