Into the blue

Into the blue NEWS llionat a tevinsinggra This image of massive galaxy cluster RCS2 J2327 combines Hubble Space Telescope images with the mass distribution superposed as a diffuse blue and white image. Arc-like distorted images of distant galaxies can be seen in the midst of the galaxy cluster, but it is the distortions arising from weak gravitational lensing that Tim Schrabback of the University of Bonn and colleagues used to map the mass – 2 × 10 M in total. They showed that a ground-based method using K data from the HAWK-1 instrument on the European Southern Observatory’s Very Large Telescope, with Large Binocular Telescope photometry, can work as well as weak lensing based on HST mosaics. (ESO, ESA/Hubble & NASA) http://www.eso.org/public/images/potw1752a 1.6 A&G • February 2018 • Vol. 59 • aandg.org Downloaded from https://academic.oup.com/astrogeo/article-abstract/59/1/1.6/4804271 by Ed 'DeepDyve' Gillespie user on 16 March 2018 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Astronomy & Geophysics Oxford University Press

Into the blue

Astronomy & Geophysics , Volume 59 (1) – Feb 1, 2018
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Publisher
Oxford University Press
Copyright
© 2018 Royal Astronomical Society
ISSN
1366-8781
eISSN
1468-4004
D.O.I.
10.1093/astrogeo/aty009
Publisher site
See Article on Publisher Site

Abstract

NEWS llionat a tevinsinggra This image of massive galaxy cluster RCS2 J2327 combines Hubble Space Telescope images with the mass distribution superposed as a diffuse blue and white image. Arc-like distorted images of distant galaxies can be seen in the midst of the galaxy cluster, but it is the distortions arising from weak gravitational lensing that Tim Schrabback of the University of Bonn and colleagues used to map the mass – 2 × 10 M in total. They showed that a ground-based method using K data from the HAWK-1 instrument on the European Southern Observatory’s Very Large Telescope, with Large Binocular Telescope photometry, can work as well as weak lensing based on HST mosaics. (ESO, ESA/Hubble & NASA) http://www.eso.org/public/images/potw1752a 1.6 A&G • February 2018 • Vol. 59 • aandg.org Downloaded from https://academic.oup.com/astrogeo/article-abstract/59/1/1.6/4804271 by Ed 'DeepDyve' Gillespie user on 16 March 2018

Journal

Astronomy & GeophysicsOxford University Press

Published: Feb 1, 2018

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