Figure 1 from Measuring the Geometry of the Universe from Weak Gravitational Lensing behind Galaxy Groups in the HST COSMOS Survey

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Measuring the Geometry of the Universe from Weak Gravitational Lensing behind Galaxy Groups in the HST COSMOS Survey

Authors: James E. Taylor, Richard J. Massey, Alexie Leauthaud, Matthew R. George, Jason Rhodes, Thomas D. Kitching, Peter Capak, Richard Ellis, Alexis Finoguenov, Olivier Ilbert, Eric Jullo, Jean-Paul Kneib, Anton M. Koekemoer, Nick Scoville, and Masayuki Tanaka

Taylor et al. 2012 The Astrophysical Journal 749 127.

Provider: AAS Journals

Caption: Figure 1.

Top panel: group mass vs. redshift. Middle panel: estimated virial radius in h ⁻¹ ₇₀ Mpc (open squares). The solid squares show the estimated scale radius, which is typically 1/4–1/5 of the virial radius. Bottom panel: estimated angular extent of the virial radius. In each case, only the 129 groups with well-determined centers and redshifts are shown, as described in Section 2.1. A WMAP7 cosmology is assumed.

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