Speaker: Huize Wang
Huize will lead a ClimaTea discussion on the some recently discovered Earth-sized exoplanets orbiting TRAPPIST-1 and their possible atmosphere compositions.
In the discussion, Huize will lead us through the following key points:
- Transit observations provide critical information that leads to the discovery of the TRAPPIST-1 planets.
- Transit spectroscopy helps us to understand the atmosphere compositions. For example, it rules out the possibility to have cloud-free hydrogen-dominated atmospheres for some planets.
- Certain aspects of climate states and habitability of these exoplanets can be inferred from this observation, although caveats and limitations exist.