Exoplanet atmospheres

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Leveraging Models to Constrain the Climates of Rocky Exoplanets

(2021)

Authors:

Thaddeus D Komacek, Wanying Kang, Jacob Lustig-Yaeger, Stephanie L Olson
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The impact of mixing treatments on cloud modelling in 3D simulations of hot Jupiters

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 506:3 (2021) 4500-4515

Authors:

DA Christie, NJ Mayne, S Lines, V Parmentier, J Manners, I Boutle, B Drummond, T Mikal-Evans, DK Sing, K Kohary

Abstract:

ABSTRACT We present results of 3D hydrodynamical simulations of HD209458b including a coupled, radiatively active cloud model (eddysed). We investigate the role of the mixing by replacing the default convective treatment used in previous works with a more physically relevant mixing treatment (Kzz) based on global circulation. We find that uncertainty in the efficiency of sedimentation through the sedimentation factor fsed plays a larger role in shaping cloud thickness and its radiative feedback on the local gas temperatures – e.g. hotspot shift and day-to-night side temperature gradient – than the switch in mixing treatment. We demonstrate using our new mixing treatments that simulations with cloud scales that are a fraction of the pressure scale height improve agreement with the observed transmission spectra, the emission spectra, and the Spitzer 4.5 µm phase curve, although our models are still unable to reproduce the optical and ultraviolet transmission spectra. We also find that the inclusion of cloud increases the transit asymmetry in the optical between the east and west limbs, although the difference remains small ($\lesssim 1{{\ \rm per\ cent}}$).
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Constraining the Climates of Rocky Exoplanets

Elements Mineralogical Society of America 17:4 (2021) 251-256

Authors:

Thaddeus D Komacek, Wanying Kang, Jacob Lustig-Yaeger, Stephanie L Olson
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Erratum: “Atmospheric Circulation of Hot Jupiters: Dayside–Nightside Temperature Differences. II. Comparison with Observations” (2017, ApJ, 835, 198)

The Astrophysical Journal American Astronomical Society 917:2 (2021) 113

Authors:

Thaddeus D Komacek, Adam P Showman, Xianyu Tan
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Erratum: “Vertical Tracer Mixing in Hot Jupiter Atmospheres” (2019, ApJ, 881, 152)

The Astrophysical Journal American Astronomical Society 917:2 (2021) 112

Authors:

Thaddeus D Komacek, Adam P Showman, Vivien Parmentier
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