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Title:
Hubble Space Telescope Discovery of a z = 3.9 Multiply Imaged Galaxy Behind the Complex Cluster Lens Warps J1415.1+36 at z = 1.026
Authors:
Huang, X.; Morokuma, T.; Fakhouri, H. K.; Aldering, G.; Amanullah, R.; Barbary, K.; Brodwin, M.; Connolly, N. V.; Dawson, K. S.; Doi, M.; Faccioli, L.; Fadeyev, V.; Fruchter, A. S.; Goldhaber, G.; Gladders, M. D.; Hennawi, J. F.; Ihara, Y.; Jee, M. J.; Kowalski, M.; Konishi, K.; Lidman, C.; Meyers, J.; Moustakas, L. A.; Perlmutter, S.; Rubin, D.; Schlegel, D. J.; Spadafora, A. L.; Suzuki, N.; Takanashi, N.; Yasuda, N.
Affiliation:
AA(Department of Physics, University of California Berkeley, Berkeley, CA 94720, USA ), AB(National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan ; Research Fellow of the Japan Society for the Promotion of Science. ), AC(Department of Physics, University of California Berkeley, Berkeley, CA 94720, USA ; E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), AD(E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), AE(Department of Physics, Stockholm University, Albanova University Center, S-106 91 Stockholm, Sweden ), AF(Department of Physics, University of California Berkeley, Berkeley, CA 94720, USA ; E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), AG(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ; W. M. Keck Postdoctoral Fellow at the Harvard-Smithsonian Center for Astrophysics.), AH(Department of Physics, Hamilton College, Clinton, NY 13323, USA ), AI(Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USA ), AJ(Institute of Astronomy, Graduate School of Science, University of Tokyo 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan ), AK(E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), AL(Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, CA 95064, USA ), AM(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA ), AN(Department of Physics, University of California Berkeley, Berkeley, CA 94720, USA ; E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), AO(Department of Astronomy and Astrophysics, The University of Chicago, 5640 S. Ellis Ave., Chicago, IL 60637, USA ), AP(Department of Physics, University of California Berkeley, Berkeley, CA 94720, USA ), AQ(Institute of Astronomy, Graduate School of Science, University of Tokyo 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan ; Research Fellow of the Japan Society for the Promotion of Science. ), AR(Department of Physics, University of California, Davis, One Shields Ave., Davis, CA 95616, USA ), AS(Humboldt Universität Institut für Physik, Newtonstrasse 15, 12489 Berlin, Germany ), AT(Institute for Cosmic Ray Research, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8582, Japan ), AU(Oskar Klein Center, Roslagstullsbacken 21, 106 91 Stockholm, Sweden ), AV(Department of Physics, University of California Berkeley, Berkeley, CA 94720, USA ; E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), AW(Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., MS 169-327, Pasadena, CA 91109, USA ), AX(Department of Physics, University of California Berkeley, Berkeley, CA 94720, USA ; E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), AY(Department of Physics, University of California Berkeley, Berkeley, CA 94720, USA ; E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), AZ(E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), BA(E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), BB(E. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA ), BC(National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan ), BD(Institute for Cosmic Ray Research, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8582, Japan )
Publication:
The Astrophysical Journal Letters, Volume 707, Issue 1, pp. L12-L16 (2009). (ApJL Homepage)
Publication Date:
12/2009
Origin:
IOP
ApJ Keywords:
galaxies: clusters: general, galaxies: clusters: individual: WARPS J1415.1+36, gravitational lensing
DOI:
10.1088/0004-637X/707/1/L12
Bibliographic Code:
2009ApJ...707L..12H

Abstract

We report the discovery of 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 using the Advanced Camera for Surveys reveal a complex lensing system that produces a prominent, highly magnified arc and a triplet of smaller arcs grouped tightly around a spectroscopically confirmed cluster member. Spectroscopic observations using the Faint Object Camera and Spectrograph on Subaru confirm strong Lyα emission in the source galaxy and provide the redshifts for more than 21 cluster members with a velocity dispersion of 807 ± 185 km s–1. Assuming a singular isothermal sphere profile, the mass within the Einstein ring (7.13 ± 0farcs38) corresponds to a central velocity dispersion of 686+15 –19 km s–1 for the cluster, 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.

Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Institute. STScI is operated by the association of Universities for Research in Astronomy, Inc. under the NASA contract NAS 5-26555. The observations are associated with program 10496.


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