Atmospheric Dynamics of Hot Giant Planets and Brown Dwarfs

@article{Showman2020AtmosphericDO,
  title={Atmospheric Dynamics of Hot Giant Planets and Brown Dwarfs},
  author={A. P. Showman and Xianyu Tan and Vivien Parmentier},
  journal={Space Science Reviews},
  year={2020}
}
Groundbased and spacecraft telescopic observations, combined with an intensive modeling effort, have greatly enhanced our understanding of hot giant planets and brown dwarfs over the past ten years. Although these objects are all fluid, hydrogen worlds with stratified atmospheres overlying convective interiors, they exhibit an impressive diversity of atmospheric behavior. Hot Jupiters are strongly irradiated, and a wealth of observations constrain the day-night temperature differences… 

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

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

A Significant Increase in Detection of High-resolution Emission Spectra Using a Three-dimensional Atmospheric Model of a Hot Jupiter

High-resolution spectroscopy has opened the way for new, detailed study of exoplanet atmospheres. There is evidence that this technique can be sensitive to the complex, three-dimensional (3D)

Stable Climates for Temperate Rocky Circumbinary Planets

  • T. Komacek
  • Geology, Physics
    Journal of Geophysical Research: Planets
  • 2020
Circumbinary planets may comprise a significant fraction of the temperate rocky planets in our galaxy. A wide range of previous work has explored the climate of circumbinary planets with

Patchy Nightside Clouds on Ultra-hot Jupiters: General Circulation Model Simulations with Radiatively Active Cloud Tracers

The atmospheres of ultra-hot Jupiters have been characterized in detail through recent phase curve and low- and high-resolution emission and transmission spectroscopic observations. Previous

Atmospheric heat redistribution effect on Emission spectra of Hot-Jupiters

Hot Jupiters are the most studied and easily detectable exoplanets for transit observations. However, the correlation between the atmospheric flow and the emission spectra of such planets is still not

Roaring Storms in the Planetary-mass Companion VHS 1256-1257 b: Hubble Space Telescope Multiepoch Monitoring Reveals Vigorous Evolution in an Ultracool Atmosphere

The photometric and spectral variability of brown dwarfs probes heterogeneous temperature and cloud distributions and traces the atmospheric circulation patterns. We present a new 42 hr Hubble Space

COol Companions ON Ultrawide orbiTS (COCONUTS). III. A Very Red L6 Benchmark Brown Dwarf around a Young M5 Dwarf

We present the third discovery from the COol Companions ON Ultrawide orbiTS (COCONUTS) program, the COCONUTS-3 system, composed of the young M5 primary star UCAC4 374−046899 and the very red L6 dwarf

A Unified Spectroscopic and Photometric Model to Infer Surface Inhomogeneity: Application to Luhman 16B

Extremely large telescopes (ELTs) provide an opportunity to observe surface inhomogeneities for ultracool objects including M dwarfs, brown dwarfs (BDs), and gas giant planets via Doppler imaging and

Cloudy and Cloud-free Thermal Phase Curves with PICASO: Applications to WASP-43b

We present new functionality within PICASO, a state-of-the-art radiative transfer model for exoplanet and brown dwarf atmospheres, by developing a new pipeline that computes phase-resolved thermal

References

SHOWING 1-10 OF 316 REFERENCES

The Global Atmospheric Circulation of Saturn

Over the past decade, the Cassini spacecraft has provided an unprecedented observational record of the atmosphere of Saturn, which in many ways now surpasses Jupiter as the best-observed giant

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

A global cloud map of the nearest known brown dwarf

A two-dimensional map of a brown dwarf’s surface is reported that allows identification of large-scale bright and dark features, indicative of patchy clouds, and suggests that the characteristic timescale for the evolution of global weather patterns is approximately one day.

Zones, spots, and planetary-scale waves beating in brown dwarf atmospheres

A long-term Spitzer Space Telescope infrared monitoring campaign of brown dwarfs is analyzed to constrain cloud cover variations over a total of 192 rotations, explaining three previously puzzling behaviors seen in brown dwarf brightness variations.

Atmospheric Variability Driven by Radiative Cloud Feedback in Brown Dwarfs and Directly Imaged Extrasolar Giant Planets

Growing observational evidence has suggested active meteorology in the atmospheres of brown dwarfs (BDs) and directly imaged extrasolar giant planets (EGPs). In particular, a number of surveys have

Effects of Latent Heating on Atmospheres of Brown Dwarfs and Directly Imaged Planets

The growing number of observations of brown dwarfs (BDs) has provided evidence for strong atmospheric circulation on these objects. Directly imaged planets share similar observations and can be

Rapid heating of the atmosphere of an extrasolar planet

8-μm photometric observations of the planet HD 80606b during a 30-hour interval bracketing the periastron passage of its extremely eccentric 111.4-day orbit indicate the global heating rate is ∼4.5 h, in comparison with 3–5 days in Earth’s stratosphere, and a secondary eclipse for the planet is detected.

A measurement of the wind speed on a brown dwarf

Radio and infrared monitoring of a nearby brown dwarf show that its atmosphere has strong winds in an east-west direction, and this technique can be applied to brown dwarfs and/or directly imaged exoplanets if periods can be determined for both the infrared and radio emissions.

Atmospheric regimes and trends on exoplanets and brown dwarfs

  • Xi Zhang
  • Physics, Geology
    Research in Astronomy and Astrophysics
  • 2020
A planetary atmosphere is the outer gas layer of a planet. Besides its scientific significance among the first and most accessible planetary layers observed from space, it is closely connected with

ATMOSPHERIC HEAT REDISTRIBUTION ON HOT JUPITERS

Infrared light curves of transiting hot Jupiters present a trend in which the atmospheres of the hottest planets are less efficient at redistributing the stellar energy absorbed on their daysides—and
...