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Oxford University Press (OUP), Monthly Notices of the Royal Astronomical Society, p. stw298

DOI: 10.1093/mnras/stw298

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Dark matter fraction of low-mass cluster members probed by galaxy-scale strong lensing

Journal article published in 2016 by W. G. Parry, C. Grillo, A. Mercurio, I. Balestra, P. Rosati, L. Christensen ORCID, M. Lombardi, G. B. Caminha ORCID, M. Nonino ORCID, A. M. Koekemoer, K. Umetsu ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We present a strong lensing system, composed of four multiple images of a source at z = 2.387, created by two lens galaxies, G1 and G2, belonging to the galaxy cluster MACS J1115.9+0129 at z = 0.353. We use observations taken as part of the Cluster Lensing and Supernova survey with Hubble, and its spectroscopic follow-up programme at the Very Large Telescope, to estimate the total mass distributions of the two galaxies and the cluster through strong gravitational lensing models. We find that the total projected mass values within the half-light radii, Re, of the two lens galaxies are MT,G1(