Date: Monday 11-Nov-2024
Time: 11:15 am - 12:15 pm
Location: ATL 1250 and Zoom (contact host Matt Nixon for link)
Speaker: Shami Tsai (UC Riverside)
Title: New Horizons in Comparative Planetary Atmospheres
Abstract: Exoplanet science has made remarkable progress. With advancements in high-resolution spectroscopy and the launch of JWST, the field has transitioned from detection to detailed atmospheric characterization. The diversity of exoplanets presents intriguing puzzles that challenge our theoretical understanding. In this talk, I will review the first detection of photochemistry on an exoplanet and discuss its implications for understanding planet formation. I will highlight some recent JWST observations, including our progress in identifying compositional trends across a wide range of temperatures. As we start to probe global atmospheric properties, I will emphasize the need to go beyond 1D models. I will introduce a 2D modeling framework that bridges the gap between 1D and 3D models, demonstrating how global circulation shapes the atmospheric composition and affects limb asymmetries. Finally, I will explore the enigmatic nature of sub-Neptune planets and share insights from our recent study on probing microbial life on sub-Neptune waterworlds. The talk will conclude with key open questions in exoplanet characterization that are within reach of current capabilities.
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.
