THE MASS DISTRIBUTION OF THE STRONG LENSING CLUSTER SDSS J1531+3414

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 Hubble Space Telescope observations of SDSS J1531+3414 reveal...

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Published inThe Astrophysical journal Vol. 795; no. 1; pp. 1 - 9
Main Authors Sharon, Keren, Gladders, Michael D, Rigby, Jane R, Wuyts, Eva, Bayliss, Matthew B, Johnson, Traci L, Florian, Michael K, Dahle, Hakon
Format Journal Article
LanguageEnglish
Published United States 01.11.2014
Subjects
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Clusters
EMISSION
Flux
Galactic halos
GALAXIES
GALAXY CLUSTERS
GRAVITATIONAL LENSES
Hubble Space Telescope
MASS DISTRIBUTION
SPACE
Star clusters
Star formation
STARS
TELESCOPES
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Summary: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 Hubble Space Telescope 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 central region, and rule out that this emission is coming from a background source.
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ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/795/1/50