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Pushing the Frontiers: uncovering the earliest galaxies in the Hubble Frontier Fields

Published online by Cambridge University Press:  27 October 2016

Rachael C. Livermore
Rachael C. Livermore*
Affiliation:
University of Texas at Austin, 2515 Speedway Stop C1400, Austin, TX 78741, USA email: r.c.livermore@astro.as.utexas.edu
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Abstract

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With the combination of deep Hubble Space Telescope imaging and magnification due to gravitational lensing, the Hubble Frontier Fields program offers an unprecedented opportunity to study the faint end of the luminosity function at the highest redshifts. Unfortunately, the region of the field that benefits most from this magnification (the immediate vicinity of the critical line) suffers from a high abundance of bright foreground galaxies and high background due to intracluster light. To overcome these difficulties, some method of modelling and subtracting the foreground light is required. Here, I present results using wavelet decomposition to subtract large-scale structures in the clusters, which significantly increases the effective depth of the images, and crucially opens up the most magnified regions of the clusters.

Keywords

galaxies: high-redshiftgalaxies: luminosity functiongravitational lensing
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 812 - 815
Copyright
Copyright © International Astronomical Union 2016 

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