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Herschel-ATLAS: modelling the first strong gravitational lenses

Dye, S.; Negrello, M.; Hopwood, R.; Nightingale, J.W.; Bussmann, R.S.; Amber, S.; Bourne, N.; Cooray, A.; Dariush, A.; Dunne, L.; Eales, S.A.; González-Nuevo, J.; Ibar, E.; Ivison, R.J.; Maddox, S.; Valiante, E.

Authors

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. González-Nuevo

E. Ibar

R.J. Ivison

S. Maddox

E. Valiante



Abstract

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.

Journal Article Type Article
Publication Date Apr 4, 2014
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Oxford University Press (OUP)
Peer Reviewed Peer Reviewed
Volume 440
APA6 Citation Dye, S., Negrello, M., Hopwood, R., Nightingale, J., Bussmann, R., Amber, S., …Valiante, E. (2014). Herschel-ATLAS: modelling the first strong gravitational lenses. Monthly Notices of the Royal Astronomical Society, 440, doi:10.1093/mnras/stu305
DOI https://doi.org/10.1093/mnras/stu305
Keywords galaxies: evolution, galaxies: structure
Publisher URL https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stu305
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information 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.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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