Methane in the atmosphere of the transiting hot Neptune GJ436b?

J. -P. Beaulieu, G. Tinetti, D. M. Kipping +14

We present an analysis of seven primary transit observations of the hot Neptune GJ436b at 3.6, 4.5 and $8\mu$m obtained with the Infrared Array Camera (IRAC) on the Spitzer Space Te…