Ultraviolet luminosity density of the universe during the epoch of reionization

Ketron Mitchell-Wynne, Asantha Cooray (), Yan Gong, Matthew Ashby, Timothy Dolch, Henry Ferguson, Steven Finkelstein, Norman Grogin, Dale Kocevski, Anton Koekemoer, Joel Primack and Joseph Smidt
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Ketron Mitchell-Wynne: University of California
Asantha Cooray: University of California
Yan Gong: University of California
Matthew Ashby: Harvard-Smithsonian Center for Astrophysics
Timothy Dolch: Cornell University
Henry Ferguson: Space Telescope Science Institute
Steven Finkelstein: The University of Texas at Austin
Norman Grogin: Space Telescope Science Institute
Dale Kocevski: University of Kentucky
Anton Koekemoer: Space Telescope Science Institute
Joel Primack: University of California Santa Cruz
Joseph Smidt: Los Alamos National Laboratory

Nature Communications, 2015, vol. 6, issue 1, 1-13

Abstract: Abstract The spatial fluctuations of the extragalactic background light trace the total emission from all stars and galaxies in the Universe. A multiwavelength study can be used to measure the integrated emission from first galaxies during reionization when the Universe was about 500 million years old. Here we report arcmin-scale spatial fluctuations in one of the deepest sky surveys with the Hubble Space Telescope in five wavebands between 0.6 and 1.6 μm. We model-fit the angular power spectra of intensity fluctuation measurements to find the ultraviolet luminosity density of galaxies at redshifts greater than 8 to be . This level of integrated light emission allows for a significant surface density of fainter primeval galaxies that are below the point-source detection level in current surveys.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8945

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DOI: 10.1038/ncomms8945

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