Clouds in partial atmospheres of lava planets and where to find them
arXiv:2407.21111 · doi:10.3847/1538-3881/ad85e0
Abstract
With dayside temperatures hot enough to sustain a magma ocean and a silicate atmosphere, lava planets are the best targets to study the atmosphere of a rocky world. In the absence of nightside heating, the entire atmosphere collapses near the day-night terminator, so condensation seems inevitable, but the impact of clouds on radiative transfer, dynamics, and observables has not yet been studied in the non-global atmospheric regime. Therefore, we simulate cloud formation and determine which lava planets should be most affected by clouds. We find that despite the scattering of visible light by clouds, heat advection compensates for the cooling effect of clouds in the atmosphere. On the other hand, surface temperatures are significantly affected and can drop 100-200 K under a cloudy sky. We find that among our targets, HD213885b and HD20329b are most affected by cloud formation: there is a discernable difference between having clouds and not having them, but the precision required to make such an inference is at the limit of current instruments.
arXiv comment11 pages, 8 figures; manuscript published
References in corpus (35)
- Clouds in the atmosphere of the super-Earth exoplanet GJ 1214b
- The MUSCLES Treasury Survey I: Motivation and Overview
- A map of the large day-night temperature gradient of a super-Earth exoplanet
- Inference of Inhomogeneous Clouds in an Exoplanet Atmosphere
- A Super-Earth Transiting a Naked-Eye Star
- Chemistry of Silicate Atmospheres of Evaporating Super-Earths
- Inverting Phase Functions to Map Exoplanets
- Increased Heat Transport in Ultra-Hot Jupiter Atmospheres Through H Dissociation/Recombination
- Variability in the super-Earth 55 Cnc e
- Atmosphere-interior exchange on hot rocky exoplanets
- An ultra-short period rocky super-Earth with a secondary eclipse and a Neptune-like companion around K2-141
- Theoretical Emission Spectra of Atmospheres of Hot Rocky Super-Earths
- The 55 Cnc system reassessed
- Compositions of Hot Super-Earth Atmospheres: exploring Kepler Candidates
- Formation of Silicate and Titanium Clouds on Hot Jupiters
- Aerosols in Exoplanet Atmospheres
- A secondary atmosphere on the rocky exoplanet 55 Cancri e
- Exoplanet Clouds
- Atmospheres of Rocky Exoplanets
- Linking the Climate and Thermal Phase Curve of 55 Cancri e
- Modelling the light-curve of KIC 12557548b: an extrasolar planet with a comet like tail
- Atmospheres of Hot Super-Earths
- K2 and Spitzer phase curves of the rocky ultra-short-period planet K2-141 b hint at a tenuous rock vapor atmosphere
- ExoMol line lists -- XLIV. IR and UV line list for silicon monoxide (SiO)
- K2-141 b: A 5-M super-Earth transiting a K7 V star every 6.7 hours
- HD 213885b: A transiting 1-day-period super-Earth with an Earth-like composition around a bright () star unveiled by TESS
- Observability of Evaporating Lava Worlds
- Magma oceans as a critical stage in the tectonic development of rocky planets
- TOI-431/HIP 26013: a super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet
- Modelling the atmosphere of lava planet K2-141b: implications for low and high resolution spectroscopy
- Hydrodynamic Escape of Mineral Atmosphere from Hot Rocky Exoplanet. I. Model Description
- Low Albedo Surfaces of Lava Worlds
- Revisiting the Iconic Spitzer Phase Curve of 55 Cancri e: Hotter Dayside, Cooler Nightside and Smaller Phase Offset
- HD 20329b: An ultra-short-period planet around a solar-type star found by TESS
- The evolution of catastrophically evaporating rocky planets