With over 4,000 exoplanet discoveries to date, we have caught a glimpse of the broad diversity of planets that span a range of masses, compositions, and orbital configurations. The next chapter in exoplanet exploration will focus on probing the atmospheres of these worlds, and we are now poised to begin large-scale atmospheric studies of exoplanets with current instruments on the Hubble Space Telescope (HST) via transmission spectroscopy. In this talk, Alam will present precise optical to infrared (~0.3-5.0 microns) transmission spectra taken with HST for four gas giant planets: WASP-52b, HAT-P-32b, WASP-62b, and HIP41378f. Dr. Alam compares the transmission spectra of these planets to a grid of 1D radiative-convective forward models and retrieves the planetary atmospheric properties. Expanding efforts for comparative exoplanetology, these optical to infrared observations constrain the atmospheric and chemical compositions of the most favorable targets well-suited for follow-up with JWST.
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