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Mass and magnification maps for the Hubble Space Telescope Frontier Fields clusters : implications for high-redshift studies.

Richard, J. and Jauzac, M. and Limousin, M. and Jullo, E. and Clément, B. and Ebeling, H. and Kneib, J.-P. and Atek, H. and Natarajan, P. and Egami, E. and Livermore, R. and Bower, R. (2014) 'Mass and magnification maps for the Hubble Space Telescope Frontier Fields clusters : implications for high-redshift studies.', Monthly notices of the Royal Astronomical Society., 444 (1). pp. 268-289.


Extending over three Hubble Space Telescope (HST) cycles, the Hubble Frontier Fields (HFF) initiative constitutes the largest commitment ever of HST time to the exploration of the distant Universe via gravitational lensing by massive galaxy clusters. Here, we present models of the mass distribution in the six HFF cluster lenses, derived from a joint strong- and weak-lensing analysis anchored by a total of 88 multiple-image systems identified in existing HST data. The resulting maps of the projected mass distribution and of the gravitational magnification effectively calibrate the HFF clusters as gravitational telescopes. Allowing the computation of search areas in the source plane, these maps are provided to the community to facilitate the exploitation of forthcoming HFF data for quantitative studies of the gravitationally lensed population of background galaxies. Our models of the gravitational magnification afforded by the HFF clusters allow us to quantify the lensing-induced boost in sensitivity over blank-field observations and predict that galaxies at z > 10 and as faint as m(AB) = 32 will be detectable, up to 2 mag fainter than the limit of the Hubble Ultra Deep Field.

Item Type:Article
Keywords:Galaxies clusters: individual: Abell 370, Galaxies clusters: individual: A1063S, Galaxies clusters: individual: Abell 2744, Galaxies clusters: individual: MACS J0416.1−2403, Galaxies clusters: individual: MACS J0717.5+3745, Galaxies clusters: individual: MACS J1149.5+2223.
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Publisher statement:This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. ©: 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Date accepted:07 July 2014
Date deposited:05 November 2015
Date of first online publication:14 August 2014
Date first made open access:No date available

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