A

Clouds can induce variability of lava worlds

Abstract

55 Cnc e is the first rocky exoplanet for which strong evidence of a thick, volatile atmosphere exists (Hu+2024). The atmosphere of this hot super-Earth shows sub-weekly variability in emission (Demory+2016, Meier-Valdez+2023, Patel+2024). Among the multiple suggested scenarios ausing this variability is an outgassing – cloud formation cycle (Loftus+2024). We investigate, whether lava worlds could host such variable, cloudy atmospheres utilizing a 1D, time independent approach. We constuct a pipeline which combines radiative transfer with equilibrium chemistry, a cloud formation model and outgassing of the magma. We run this setup for a selection of atmospheric compositions and surface pressures for the purpose of our investigation and estimate the duration of each stage in the cycle from the physical processes involved. In this poster I present the results of our study, focusing on the spectral variability on cloudy lava worlds and their timescales.

Authors 3

  1. Leiden University · Leiden Observatory · Space Research Organisation Netherlands

    Affiliation as printed

    Leiden, Physics, Astronomy, Sterrewacht Leiden, The Netherlands (ljanssen@strw.leidenuniv.nl)

    Leiden, SRON Netherlands Institute for Space Research, Leiden, The Netherlands

  2. Space Research Organisation Netherlands

    Affiliation as printed

    Leiden, SRON Netherlands Institute for Space Research, Leiden, The Netherlands

  3. Jet Propulsion Laboratory

    Affiliation as printed

    Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA

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