A Lyman α emitter at z = 6.5 found with slitless spectroscopyJ. D. Kurk, A. Cimatti, S. di Serego Alighieri, J. Vernet, E. Daddi, A. Ferrara and B. CiardiA&A, 422 1 (2004) L13-L17DOI: https://doi.org/10.1051/0004-6361:20040189