BRIGHT STRONGLY LENSED GALAXIES at REDSHIFT Z ∼ 6–7 BEHIND the CLUSTERS ABELL 1703 and CL0024+16∗
The Astrophysical Journal, 697:1907–1917, 2009 June 1 doi:10.1088/0004-637X/697/2/1907 C 2009. The American Astronomical Society. All rights reserved. Printed in the U.S.A. BRIGHT STRONGLY LENSED GALAXIES AT REDSHIFT z ∼ 6–7 BEHIND THE CLUSTERS ABELL 1703 AND CL0024+16∗ W. Zheng1, L. D. Bradley1,R.J.Bouwens2, H. C. Ford1, G. D. Illingworth2,N.Ben´ıtez3, T. Broadhurst4, B. Frye5, L. Infante6,M.J.Jee7, V. Motta8,X.W.Shu1,9, and A. Zitrin4 1 Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA 2 Lick Observatory, University of California, Santa Cruz, CA 95064, USA 3 Instituto de Matematicas´ y F´ısica Fundamental (CSIC), C/Serrano 113-bis, 28006, Madrid, Spain 4 School of Physics and Astronomy, University of Tel Aviv, 69978, Israel 5 School of Physical Sciences, Dublin City University, Dublin 9, Republic of Ireland 6 Departmento de Astronom´ıa y Astrof´ısica, Pontificia Universidad Catolica´ de Chile, Santiago 22, Chile 7 Department of Physics, University of California, Davis, CA 95616, USA 8 Departamento de F´ısica y Astronom´ıa, Universidad de Valpara´ıso, Valpara´ıso, Chile 9 Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui 230026, China Received 2008 October 13; accepted 2009 March 26; published 2009 May 15 ABSTRACT We report on the discovery of three bright, strongly lensed objects behind Abell 1703 and CL0024+16 from a dropout search over 25 arcmin2 of deep NICMOS data, with deep ACS optical coverage. They are undetected in the deep ACS images below 8500 Å and have clear detections in the J and H bands.
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