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arXiv · 1407.2266

The Mass Distribution of the Strong Lensing Cluster SDSS J1531+3414

Keren Sharon·Michael D. Gladders·Jane R. Rigby·Eva Wuyts·Matthew B. Bayliss·Traci L. Johnson·Michael K. Florian·Hakon Dahle
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Abstract

We present the mass distribution at the core of SDSS J1531+3414, a strong-lensing cluster at z=0.335. We find that the mass distribution is well described by two cluster-scale halos with a contribution from cluster-member galaxies. New HST observations of SDSS J1531+3414 reveal a signature of ongoing star formation associated with the two central galaxies at the core of the cluster, in the form of a chain of star forming regions at the center of the cluster. Using the lens model presented here, we place upper limits on the contribution of a possible lensed image to the flux at the center region, and rule out that this emission is coming from a background source.

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Keren Sharon, Michael D. Gladders, Jane R. Rigby, Eva Wuyts, Matthew B. Bayliss, Traci L. Johnson, Michael K. Florian, Hakon Dahle. 2014-07-08. The Mass Distribution of the Strong Lensing Cluster SDSS J1531+3414. https://doi.org/10.1088/0004-637x/795/1/50

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