HST Discovery Of A z=3.9 Multiply Imaged Galaxy Behind The Complex Cluster Lens WARPS J1415.1+36 At z=1.026

Details HST Discovery Of A z=3.9 Multiply Imaged Galaxy Behind The Complex Cluster Lens WARPS J1415.1+36 At z=1.026 HST Discovery Of A z=3.9 Multiply Imaged Galaxy Behind The Complex Cluster Lens WARPS J1415.1+36 At z=1.026

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21546103h&link_type=abstract

American Astronomical Society, AAS Meeting #215, #461.03; Bulletin of the American Astronomical Society, Vol. 42, p.492

Astronomy and Astrophysics

Astronomy

Scientific paper

In the Hubble Space Telescope Cluster Supernova (SN) Survey (PI:Perlmutter), a large HST program that targeted massive galaxy clusters to find and follow SNe, we discovered a multiply lensed Lyα emitter at z = 3.90 behind the massive cluster WARPS J1415.1+3612 at z = 1.026. Images taken by the Hubble Space Telescope (HST) using ACS reveal a complex lensing system that produces a prominent, highly magnified arc and a triplet of smaller arcs grouped tightly around a cluster member. Spectroscopic observation provides the redshifts for more than 21 cluster members with a velocity dispersion of 807±185 km/s. The mass within the Einstein ring radius corresponds to a central velocity dispersion of 686+15 km/s, consistent with the value estimated from cluster member redshifts. Our mass profile estimate from combining strong lensing and dynamical analyses is in good agreement with both X-ray and weak lensing results. This work has been supported by the Office of Science, U.S. Department of Energy, through contract DE-AC02-05CH11231 and in part by NASA through grants associated with HST-GO-10496.

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