Poster Open Access
Atmospheric Circulation of Brown Dwarfs and Directly Imaged Extrasolar Giant Planets Driven by Cloud Radiative Feedback
Xianyu Tan
Observations of brown dwarfs (BDs), free-floating planetary-mass objects, and directly imaged extrasolar giant planets (EGPs) exhibit rich evidence of large-scale weather. Understanding the mechanisms driving the atmospheric circulation of BDs and directly imaged EGPs is crucial to interpret the observed lightcurve variability. We proposed a thermally-driven mechanism linked to cloud radiative feedback. In this poster, we introduce the principle of this mechanism and highlight the properties of the resulting circulation patterns. I will show that this mechanism can generate vigorous atmospheric flows, including turbulence, vortices, waves, and zonal jets under certain circumstances. Implications for observations will also be discussed.
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coolStar2021_Tan.pdf
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- Publication date:
- February 25, 2021
- DOI:
-
- Keyword(s):
- brown dwarfs, giant planets, clouds, global circulation
- Published in:
- Monthly Notices of the Royal Astronomical Society: 502 pp. 678-699 and 2198-2219 (1 and 2).
- Communities:
- License (for files):
- Creative Commons Attribution 4.0 International