The Impact of UV Irradiance on the Composition of Exoplanets
Abstract
A majority of extrasolar giant planets are within a few hundredths of an AU from their parent star. Their proximity subjects them to high amounts of UV flux compared to what bodies in our own solar system receive. Therefore, we expect photochemistry to play a significant role in the composition of their visible atmospheres. Here we will present photochemical results that demonstrate the effects of different UV fields for F, G, K and M stars using HD189733b and GJ436b as examples. Effects of different eddy mixing strengths and metallicty will also be investigated as they determine where the boundary between thermochemistry and transport occurs and thus determine the bulk composition of the visible atmosphere.
- Publication:
-
AAS/Division for Planetary Sciences Meeting Abstracts #42
- Pub Date:
- October 2010
- Bibcode:
- 2010DPS....42.5203L