Date: Monday 09-Dec-2024
Time: 11:15 am - 12:15 pm
Location: ATL 1250 and Zoom (contact host Matt Nixon for link)
Speaker: Helena Lecoq Molinos (Space Research Institute of the Austrian Academy of Sciences)
Title: From Molecules to Clouds: Metal Oxide Nucleation in Exoplanet Atmospheres
Abstract: Observations of numerous gaseous exoplanets have revealed the presence of clouds in their atmospheres. However, current cloud formation models have so far been unable to reproduce these observations. In this talk, I will focus on the first steps of cloud formation in gaseous atmospheres: the nucleation process. I will first introduce the quantum chemical methods I have used to obtain thermochemical and spectral data of several metal oxides believed to initiate cloud formation in hot Jupiters. Then, I will show how the quantum chemical data has allowed us to calculate non-classical nucleation rates, which are up to 15 orders of magnitude higher than classical nucleation rates. Finally, I will discuss the observability of the clusters with JWST/MIRI.
If you have any questions, contact the PALS hosts: Benjamin Sharkey (small bodies) and Matt Nixon (exoplanets).
SPECIAL ACCOMMODATIONS:Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.
ATL 1250 is a flat, carpeted conference room that can accommodate approximately 20-30 people at large tables. The closest wheelchair accessible entry to this room in the Atlantic building is the white stone entrance at 224 Stadium Drive.
