The cloudy shape of hot Jupiter thermal phase curves

  title={The cloudy shape of hot Jupiter thermal phase curves},
  author={Vivien Parmentier and A. P. Showman and Jonathan J. Fortney},
  journal={arXiv: Earth and Planetary Astrophysics},
Hot Jupiters have been predicted to have a strong day/night temperature contrast and a hot spot shifted eastward of the substellar point. This was confirmed by numerous phase curve observations probing the longitudinal brightness variation of the atmosphere. Global circulation models, however, systematically underestimate the phase curve amplitude and overestimate the shift of its maximum. We use a global circulation model including non-grey radiative transfer and realistic gas and cloud… 
HST/WFC3 Complete Phase-resolved Spectroscopy of White-dwarf-brown-dwarf Binaries WD 0137 and EPIC 2122
Brown dwarfs in close-in orbits around white dwarfs offer an excellent opportunity to investigate properties of fast-rotating, tidally locked, and highly irradiated atmospheres. We present Hubble
A Universal Cloud Composition on the Nightsides of Hot Jupiters
The day and nightside temperatures of hot Jupiters are diagnostics of heat transport processes in their atmospheres. Recent observations have shown that the nightsides of hot Jupiters are a nearly
A solar C/O and sub-solar metallicity in a hot Jupiter atmosphere.
Spectroscopic observations of a typical transiting hot Jupiter, WASP-77Ab, determine the atmospheric gas volume mixing ratio constraints on both H2O and CO and derive the atmospheric C/H and O/H abundances and the corresponding atmospheric carbon-to-oxygen ratio.
A unique hot Jupiter spectral sequence with evidence for compositional diversity
The emergent spectra of close-in, giant exoplanets (”hot Jupiters”) are expected to be distinct from those of self-luminous objects with similar effective temperatures because hot Jupiters are
Aerosols in Exoplanet Atmospheres
Observations of exoplanet atmospheres have shown that aerosols, like in the Solar System, are common across a variety of temperatures and planet types. The formation and distribution of these
Cloud property trends in hot and ultra-hot giant gas planets (WASP-43b, WASP-103b, WASP-121b, HAT-P-7b, and WASP-18b)
Ultra-hot Jupiters are the hottest exoplanets discovered so far. Observations begin to provide insight into the composition of their extended atmospheres and their chemical day/night asymmetries.
Constraining Mornings and Evenings on Distant Worlds: A new Semianalytical Approach and Prospects with Transmission Spectroscopy
  • N. Espinoza, Kathryn Jones
  • Physics
    The Astronomical Journal
  • 2021
The technique of transmission spectroscopy—the variation of a planetary radius with wavelength due to opacity sources in the planet’s terminator region—has been one of the most successful in the
Decomposing the iron cross-correlation signal of the ultra-hot Jupiter WASP-76b in transmission using 3D Monte Carlo radiative transfer
Ultra-hot Jupiters are tidally locked gas giants with dayside temperatures high enough to dissociate hydrogen and other molecules. Their atmospheres are vastly non-uniform in terms of chemistry,
Evidence for disequilibrium chemistry from vertical mixing in hot Jupiter atmospheres
Aims. We present a large atmospheric study of 49 gas giant exoplanets using infrared transmission photometry with Spitzer/IRAC at 3.6 and 4.5 μm. Methods. We uniformly analyze 70 photometric light
Hot Jupiters: Origins, Structure, Atmospheres
We provide a brief review of many aspects of the planetary physics of hot Jupiters. Our aim is to cover most of the major areas of current study while providing the reader with additional references


Exoplanet Phase Curves: Observations and Theory
Phase curves are the best technique to probe the three dimensional structure of exoplanets' atmospheres. In this chapter we first review current exoplanets phase curve observations and the particular
Showman A
  • ApJ
  • 2018
Effects of dissociation/recombination on the day-night temperature contrasts of ultra-hot Jupiters
Secondary eclipse observations of ultra-hot Jupiters have found evidence that hydrogen is dissociated on their daysides. Additionally, full-phase light curve observations of ultra-hot Jupiters show a
Hot Jupiters, due to the proximity to their parent stars, are subjected to a strong irradiating flux that governs their radiative and dynamical properties. We compute a suite of three-dimensional
Doppler Signatures of the Atmospheric Circulation on Hot Jupiters
The meteorology of hot Jupiters has been characterized primarily with thermal measurements, but recent observations suggest the possibility of directly detecting the winds by observing the Doppler
Evolution of "51 Pegasus b-like" planets
About one-quarter of the extrasolar giant planets discovered so far have orbital distances smaller than 0.1 AU. These “51 Peg b-like” planets can now be directly characterized, as shown by the planet
Atmospheric Circulation of Hot Jupiters: Dayside–Nightside Temperature Differences. II. Comparison with Observations
NASA [NNX12AI79G]; NASA Headquarters [PLANET14F-0038]; NASA Headquarters; NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center
  • 2020
  • 2020
2.5D retrieval of atmospheric properties from exoplanet phase curves: application to WASP-43b observations
We present a novel retrieval technique that attempts to model phase curve observations of exoplanets more realistically and reliably, which we call the 2.5-dimensional (2.5D) approach. In our 2.5D