Transmission spectral proper/es of cloud condensates in hot Jupiter atmospheres Hannah Wakeford University of Exeter Supervisor: D.K. Sing Observa/ons of Exoplanet atmospheres Clear ? Cloudy ? Wakeford & Sing, 2015, A&A, 573, A122 Cloud Condensates Wakeford & Sing, 2015, A&A, 573, A122 Cloud Condensates Wakeford & Sing, 2015, A&A, 573, A122 Fi<ng for cloud par/cle distribu/ons Wakeford & Sing, 2015, A&A, 573, A122 Transmission Spectra of cloud condensates Wakeford & Sing, 2015, A&A, 573, A122 Transmission Spectral Signatures Wakeford & Sing, 2015, A&A, 573, A122 JWST Wakeford & Sing, 2015, A&A, 573, A122 Summary •  Condensate transmission spectra can be approximated using the largest parNcle size in a distribuNon •  AbsorpNon features are dominated by vibraNonal modes of the major di-­‐atomic bond in the condensate •  As a result on observaNonal disNncNon can be made between species generated photochemically or through condensaNon •  Rayleigh scaMering in the opNcal can be used as a diagnosNc for parNcle size and condensates to be observed in the IR •  JWST MIRI will have 50x sensiNvity and 7x angular resoluNon of Spitzer Wakeford & Sing, 2015, A&A, 573, A122 Cloudy with a chance of H2O What’s Next? NPP Fellow working with Avi Mandell by Hannah Wakeford