IDCS J1426.5+3508: WEAK LENSING ANALYSIS of A MASSIVE GALAXY CLUSTER at z = 1.75

Wenli Mo; Anthony Gonzalez; M. James Jee; Richard Massey; Jason Rhodes; Mark Brodwin; Peter Eisenhardt; Daniel P. Marrone; S. A. Stanford; Gregory R. Zeimann

doi:10.3847/2041-8205/818/2/L25

IDCS J1426.5+3508: WEAK LENSING ANALYSIS of A MASSIVE GALAXY CLUSTER at z = 1.75

Wenli Mo, Anthony Gonzalez, M. James Jee, Richard Massey, Jason Rhodes, Mark Brodwin, Peter Eisenhardt, Daniel P. Marrone, S. A. Stanford, Gregory R. Zeimann

Institute of Earth·Atmosphere·Astronomy(BK21+)

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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_o. 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.

Original language	English
Article number	L25
Journal	Astrophysical Journal Letters
Volume	818
Issue number	2
DOIs	https://doi.org/10.3847/2041-8205/818/2/L25
Publication status	Published - 2016 Feb 20

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

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/2041-8205/818/2/L25

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title = "IDCS J1426.5+3508: WEAK LENSING ANALYSIS of A MASSIVE GALAXY CLUSTER at z = 1.75",

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 Mo. 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.",

author = "Wenli Mo and Anthony Gonzalez and Jee, {M. James} and Richard Massey and Jason Rhodes and Mark Brodwin and Peter Eisenhardt and Marrone, {Daniel P.} and Stanford, {S. A.} and Zeimann, {Gregory R.}",

year = "2016",

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doi = "10.3847/2041-8205/818/2/L25",

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T2 - WEAK LENSING ANALYSIS of A MASSIVE GALAXY CLUSTER at z = 1.75

AU - Mo, Wenli

AU - Gonzalez, Anthony

AU - Jee, M. James

AU - Massey, Richard

AU - Rhodes, Jason

AU - Brodwin, Mark

AU - Eisenhardt, Peter

AU - Marrone, Daniel P.

AU - Stanford, S. A.

AU - Zeimann, Gregory R.

PY - 2016/2/20

Y1 - 2016/2/20

N2 - 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 Mo. 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.

AB - 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 Mo. 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.

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IDCS J1426.5+3508: WEAK LENSING ANALYSIS of A MASSIVE GALAXY CLUSTER at z = 1.75

Abstract

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