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. http://resolver.caltech.edu/CaltechAUTHORS:20160311-110404000

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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,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:

URL	URL Type	Description
http://dx.doi.org/10.3847/2041-8205/818/2/L25	DOI	Article
http://iopscience.iop.org/article/10.3847/2041-8205/818/2/L25/meta	Publisher	Article
http://arxiv.org/abs/1601.07967	arXiv	Discussion Paper

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.

Funders:

Funding Agency	Grant Number
Space Telescope Science Institute	HST-GO-11663
Space Telescope Science Institute	HST-GO-12203
Space Telescope Science Institute	HST-GO-12994
NASA	NAS 5-26555
NSF Graduate Research Fellowship	DGE-1315138
National Research Foundation of Korea	UNSPECIFIED
Royal Society	UNSPECIFIED
NASA/JPL/Caltech	UNSPECIFIED

Subject Keywords:

cosmology: observations; dark matter; galaxies: clusters: individual (IDCS J1426.5+3508) ; gravitational lensing: weak

Record Number:

CaltechAUTHORS:20160311-110404000

Persistent URL:

http://resolver.caltech.edu/CaltechAUTHORS:20160311-110404000

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

Collection:

CaltechAUTHORS

Deposited By:

Ruth Sustaita

Deposited On:

11 Mar 2016 21:46

Last Modified:

11 Mar 2016 21:46

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