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IDCS J1426.5+3508: Weak Lensing Analysis of a Massive Galaxy Cluster at z = 1.75

Mo, W.; Gonzalez, A.; Jee, M.J.; Massey, R.; Rhodes, J.; Brodwin, M.; Eisenhardt, P.; Marrone, D.P.; Stanford, S.A.; Zeimann, G.R.

IDCS J1426.5+3508: Weak Lensing Analysis of a Massive Galaxy Cluster at z = 1.75 Thumbnail


Authors

W. Mo

A. Gonzalez

M.J. Jee

J. Rhodes

M. Brodwin

P. Eisenhardt

D.P. Marrone

S.A. Stanford

G.R. Zeimann



Abstract

We present a weak lensing study of the galaxy cluster IDCS J1426.5+3508 at z = 1.75, which is the highest-redshift strong lensing cluster known and the most distant cluster for which a weak lensing analysis has been undertaken. Using F160W, F814W, and F606W observations with the Hubble Space Telescope, we detect tangential shear at 2σ significance. Fitting a Navarro–Frenk–White mass profile to the shear with a theoretical median mass-concentration relation, we derive a mass ${M}_{200,\mathrm{crit}}={2.3}_{-1.4}^{+2.1}\times {10}^{14}\;$ M⊙. This mass is consistent with previous mass estimates from the Sunyaev–Zel'dovich (SZ) effect, X-ray, and strong lensing. The cluster lies on the local SZ–weak lensing mass scaling relation observed at low redshift, indicative of minimal evolution in this relation.

Citation

Mo, W., Gonzalez, A., Jee, M., Massey, R., Rhodes, J., Brodwin, M., …Zeimann, G. (2016). IDCS J1426.5+3508: Weak Lensing Analysis of a Massive Galaxy Cluster at z = 1.75. Astrophysical Journal, 818(2), Article L25. https://doi.org/10.3847/2041-8205/818/2/l25

Journal Article Type Article
Acceptance Date Jan 27, 2016
Online Publication Date Feb 12, 2016
Publication Date Feb 20, 2016
Deposit Date Apr 5, 2016
Publicly Available Date Apr 8, 2016
Journal Astrophysical Journal
Print ISSN 0004-637X
Electronic ISSN 1538-4357
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 818
Issue 2
Article Number L25
DOI https://doi.org/10.3847/2041-8205/818/2/l25
Related Public URLs http://arxiv.org/abs/1601.07967

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© 2016. The American Astronomical Society. All rights reserved.







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