This project was led by Dr. Mark Swain of JPL. We used public Spitzer IRS data taken of HD 209458 just before, during, and just after the secondary transit by its exoplanet. The main result of this work was in the development of spectroscopic data reduction techniques specific to the IRS instrument, as this was one of the first attempts at using IRS for exoplanetary spectroscopy.
Green lines are our binned two semi-independent data reduction methods. Red lines are planetary atmosphere models from Burrows et al. 2007. White dotted lines are simple blackbody curves at different temperatures. Figure from the NASA press release on this paper in 2007.
