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

Mo, Wenli and Gonzalez, Anthony and Jee, M. James and Massey, Richard and Rhodes, Jason and Brodwin, Mark and Eisenhardt, Peter and Marrone, Daniel P. and Stanford, S. A. and Zeimann, Gregory R. (2016) IDCS J1426.5+3508: Weak Lensing Analysis of a Massive Galaxy Cluster at z=1.75. Astrophysical Journal Letters, 818 (2). Art. No. L25. ISSN 2041-8205. doi:10.3847/2041-8205/818/2/L25.

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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,crit) = 2.3_(1.4)^(+2.1) x 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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Gonzalez, Anthony0000-0002-0933-8601
Massey, Richard0000-0002-6085-3780
Rhodes, Jason0000-0002-4485-8549
Brodwin, Mark0000-0002-4208-798X
Marrone, Daniel P.0000-0002-2367-1080
Additional Information:© 2016 American Astronomical Society. Received 2015 October 30; accepted 2016 January 27; published 2016 February 12. The authors thank the anonymous referee and Daniel Stern for their insightful suggestions and Audrey Galametz for her help with the CANDELS-UDS data. Support for HST GO-program 11663, 12203, and 12994 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. We also acknowledge funding received from the National Science Foundation Graduate Research Fellowship under grant No. DGE-1315138 (W.M.), NRF of Korea to CGER (M.J.J.), and Royal Society University Research Fellowship (R.M.). J.R. is supported by JPL, which is run by Caltech under a contract for NASA.
Funding AgencyGrant Number
NASANAS 5-26555
NSF Graduate Research FellowshipDGE-1315138
National Research Foundation of KoreaUNSPECIFIED
Subject Keywords:cosmology: observations; dark matter; galaxies: clusters: individual (IDCS J1426.5+3508) ; gravitational lensing: weak
Issue or Number:2
Record Number:CaltechAUTHORS:20160311-110404000
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Official Citation:Wenli Mo et al 2016 ApJ 818 L25
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65301
Deposited By: Ruth Sustaita
Deposited On:11 Mar 2016 21:46
Last Modified:10 Nov 2021 23:42

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