Transit spectrophotometry of the exoplanet HD 189733b - II. New Spitzer observations at 3.6 μmJ.-M. Désert, D. Sing, A. Vidal-Madjar, G. Hébrard, D. Ehrenreich, A. Lecavelier des Etangs, V. Parmentier, R. Ferlet and G. W. HenryA&A, 526 (2011) A12DOI: https://doi.org/10.1051/0004-6361/200913093