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The Host Galaxies of Tidal Disruption Events

Zabludoff, Ann I.; French, K. Decker; Graur, Or +2 more

Recent studies of Tidal Disruption Events (TDEs) have revealed unexpected correlations between the TDE rate and the large-scale properties of the host galaxies. In this review, we present the host galaxy properties of all TDE candidates known to date and quantify their distributions. We consider throughout the differences between observationally-i…

Atmospheric Dynamics of Hot Giant Planets and Brown Dwarfs

Showman, Adam P.; Parmentier, Vivien; Tan, Xianyu

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…

A Review of Possible Planetary Atmospheres in the TRAPPIST-1 System

Demory, Brice-Olivier; Leconte, Jérémy; Turbet, Martin +4 more

TRAPPIST-1 is a fantastic nearby (∼39.14 light years) planetary system made of at least seven transiting terrestrial-size, terrestrial-mass planets all receiving a moderate amount of irradiation. To date, this is the most observationally favourable system of potentially habitable planets known to exist. Since the announcement of the discovery of t…

Outstanding Challenges of Exoplanet Atmospheric Retrievals

Barstow, Joanna K.; Heng, Kevin

Spectral retrieval has long been a powerful tool for interpreting planetary remote sensing observations. Flexible, parameterised, agnostic models are coupled with inversion algorithms in order to infer atmospheric properties directly from observations, with minimal reliance on physical assumptions. This approach, originally developed for applicati…

Ice Giant Circulation Patterns: Implications for Atmospheric Probes

de Pater, Imke; Fletcher, Leigh N.; Irwin, Patrick G. J. +4 more

Atmospheric circulation patterns derived from multi-spectral remote sensing can serve as a guide for choosing a suitable entry location for a future in situ probe mission to the Ice Giants. Since the Voyager-2 flybys in the 1980s, three decades of observations from ground- and space-based observatories have generated a picture of Ice Giant circula…