HAT-P-32b: a cloudy, inflated hot Jupiter?

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HAT-P-32b: a cloudy, inflated hot Jupiter?

Post by Lazarus on 29th September 2013, 5:43 am

Gibson et al. "The optical transmission spectrum of the hot Jupiter HAT-P-32b: clouds explain the absence of broad spectral features?"
http://arxiv.org/abs/1309.6998

HAT-P-32b was chosen as a target because it is predicted to have a large atmospheric scale height. The data are consistent with a flat spectrum, two possible models are suggested: one is that the atmosphere is cloudy, the other is an unknown mechanism to deplete TiO/VO to just the right amount. The authors consider the cloud explanation to be more likely as it requires less fine-tuning, and there is more evidence for clouds on hot Jupiters than TiO/VO, which have not yet been conclusively detected.

Also there is a previously-unknown M-dwarf at 2.8″ from HAT-P-32.
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