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

Xiaosheng Huang, T. Morokuma, H. Fakhouri, G. Aldering, R. Amanullah, K. Barbary, M. Brodwin, N. Connolly, K. Dawson, M. Doi, L. Faccioli, V. Fadeyev, A. Fruchter, G. Goldhaber, M. Gladders, J. Hennawi, Y. Ihara, M. Jee, M. Kowalski, K. KonishiC. Lidman, J. Meyers, L. Moustakas, S. Perlmutter, D. Rubin, D. Schlegel, A. Spadafora, N. Takanashi, N. Yasuda

Research output: Contribution to conferencePaper

Abstract

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.
Original languageEnglish
Pages461.03
Publication statusPublished - 1 Jan 2010

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