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Herschel-ATLAS: modelling the first strong gravitational lenses

Dye, S. and Negrello, M. and Hopwood, R. and Nightingale, J. W. and Bussmann, R. S. and Amber, S. and Bourne, N. and Cooray, A. and Dariush, A. and Dunne, L. and Eales, S. A. and Gonzalez-Nuevo, J. and Ibar, E. and Ivison, R. J. and Maddox, S. and Valiante, E. and Smith, M. (2014) Herschel-ATLAS: modelling the first strong gravitational lenses. Monthly Notices of the Royal Astronomical Society, 440 (3). pp. 2013-2025. ISSN 0035-8711. doi:10.1093/mnras/stu305.

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We have determined the mass density radial profiles of the first five strong gravitational lens systems discovered by the Herschel Astrophysical Terahertz Large Area Survey. We present an enhancement of the semilinear lens inversion method of Warren & Dye which allows simultaneous reconstruction of several different wavebands and apply this to dual-band imaging of the lenses acquired with the Hubble Space Telescope. The five systems analysed here have lens redshifts which span a range 0.22 ≤ z ≤ 0.94. Our findings are consistent with other studies by concluding that: (1) the logarithmic slope of the total mass density profile steepens with decreasing redshift; (2) the slope is positively correlated with the average total projected mass density of the lens contained within half the effective radius and negatively correlated with the effective radius; (3) the fraction of dark matter contained within half the effective radius increases with increasing effective radius and increases with redshift.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper 10.1093/mnras/stu305DOIArticle
Cooray, A.0000-0002-3892-0190
Ivison, R. J.0000-0001-5118-1313
Smith, M.0000-0002-3321-1432
Additional Information:© 2014 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2014 February 11. Received 2014 February 4; in original form 2013 November 27. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. The work in this paper is based on observations made with the NASA/ESA Hubble Space Telescope under the HST programme #12194. MN acknowledges financial support from ASI/INAF Agreement I/072/09/0 and from PRIN-INAF 2012 project: ‘Looking into the dust-obscured phase of galaxy formation through cosmic zoom lenses in the Herschel Astrophysical Large Area Survey’. JGN acknowledges financial support from the Spanish Ministerio de Ciencia e Innovacion, project AYA2010-21766-C03-01, and the Spanish CSIC for a JAE-DOC fellowship, co-funded by the European Social Fund. We thank Martin Baes and Michal Michalowski for constructive comments on this paper. We would also like to thank Adam Moss for technical discussions regarding the MCMC analysis contained herein.
Funding AgencyGrant Number
Agenzia Spaziale Italiana (ASI)I/072/09/0
Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Ministerio de Ciencia e Innovación (MCINN)AYA2010-21766-C03-01
European Social FundUNSPECIFIED
Subject Keywords: galaxies: evolution galaxies: structure
Issue or Number:3
Record Number:CaltechAUTHORS:20140530-101855336
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Official Citation:S. Dye, M. Negrello, R. Hopwood, J. W. Nightingale, R. S. Bussmann, S. Amber, N. Bourne, A. Cooray, A. Dariush, L. Dunne, S. A. Eales, J. Gonzalez-Nuevo, E. Ibar, R. J. Ivison, S. Maddox, E. Valiante, and M. Smith Herschel-ATLAS: modelling the first strong gravitational lenses MNRAS (May 21, 2014) Vol. 440 2013-2025 doi:10.1093/mnras/stu305
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45997
Deposited On:30 May 2014 17:39
Last Modified:10 Nov 2021 17:19

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