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Observations of time-resolved thermal emission from tidally locked exoplanets can tell us about their atmospheric temperature structure. Telescopes such as JWST and ARIEL will improve the quality and availability of these measurements. This…

地球与行星天体物理 · 物理学 2022-12-28 Neil T. Lewis , Mark Hammond

Next-generation space telescopes will observe the atmospheres of rocky planets orbiting nearby M-dwarfs. Understanding these observations will require well-developed theory in addition to numerical simulations. Here we present theoretical…

地球与行星天体物理 · 物理学 2016-08-29 Daniel D. B. Koll , Dorian S. Abbot

Using an idealised general circulation model, we investigate the atmospheric circulation of Earth-like terrestrial planets in a variety of orbital configurations. We relax the common assumption of the planet being tidally-locked, and look…

地球与行星天体物理 · 物理学 2018-12-12 James Penn , Geoffrey K Vallis

The potential habitability of known exoplanets is often categorized by a nominal equilibrium temperature assuming a Bond albedo of either 0.3, similar to Earth, or 0. As an indicator of habitability, this leaves much to be desired, because…

Reflected light photometry of terrestrial exoplanets could reveal the presence of oceans and continents, hence placing direct constraints on the current and long-term habitability of these worlds. Inferring the albedo map of a planet from…

地球与行星天体物理 · 物理学 2022-01-19 Lucas Teinturier , Nicholas Vieira , Elisa Jacquet , Juliette Geoffrion , Youssef Bestavros , Dylan Keating , Nicolas B. Cowan

With over 1800 planets discovered outside of the Solar System in the past two decades, the field of exoplanetology has broadened our perspective on planetary systems. Research priorities are now moving from planet detection to planet…

地球与行星天体物理 · 物理学 2015-09-07 Julien de Wit

Spectroscopic phase curves provide unique access to the three-dimensional properties of transiting exoplanet atmospheres. However, a modeling framework must be developed to deliver accurate inferences of atmospheric properties for these…

地球与行星天体物理 · 物理学 2020-09-02 Y. Katherina Feng , Michael R. Line , Jonathan J. Fortney

Reflected light curves observed for exoplanets indicate bright clouds at some of them. We estimate how the light curve and total stellar heating of a planet depend on forward and backward scattering in the clouds based on Pioneer and…

地球与行星天体物理 · 物理学 2016-05-25 Ulyana Dyudina , Xi Zhang , Liming Li , Pushkar Kopparla , Andrew P. Ingersoll , Luke Dones , Anne Verbiscer , Yuk L. Yung

First generation optical coronagraphic telescopes will obtain images of cool gas and ice giant exoplanets around nearby stars. The albedo spectra of exoplanets at planet-star separations larger than about 1 AU are dominated by reflected…

地球与行星天体物理 · 物理学 2015-05-20 Kerri L. Cahoy , Mark S. Marley , Jonathan J. Fortney

With the increasing number of directly imaged giant exoplanets the current atmosphere models are often not capable of fully explaining the spectra and luminosity of the sources. A particularly challenging component of the atmosphere models…

地球与行星天体物理 · 物理学 2015-06-11 Veselin B. Kostov , Dániel Apai

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-dimension (2.5-D) approach. In our 2.5-D approach we retrieve the vertical…

地球与行星天体物理 · 物理学 2021-06-04 Patrick G. J. Irwin , Vivien Parmentier , Jake Taylor , Jo Barstow , Suzanne Aigrain , Elspeth K. H. Lee , Ryan Garland

Observations of scattered light and thermal emission from hot Jupiter exoplanets have suggested the presence of inhomogeneous aerosols in their atmospheres. 3D general circulation models (GCMs) that attempt to model the effects of aerosols…

地球与行星天体物理 · 物理学 2021-03-19 Caleb K. Harada , Eliza M. -R. Kempton , Emily Rauscher , Michael Roman , Isaac Malsky , Marah Brinjikji , Victoria diTomasso

We provide a new framework to model the day side and night side atmospheres of irradiated exoplanets using 1-D radiative transfer by incorporating a self-consistent heat flux carried by circulation currents (winds) between the two sides.…

地球与行星天体物理 · 物理学 2020-10-21 Siddharth Gandhi , Adam S. Jermyn

Atmospheric temperatures are to be estimated from thermal emission spectra of Earth-like exoplanets orbiting M-stars as observed by current and future planned missions. To this end, a line-by-line radiative transfer code is used to generate…

地球与行星天体物理 · 物理学 2023-06-02 Franz Schreier , J. Lee Grenfell , Fabian Wunderlich , Thomas Trautmann

The advent of high-resolution spectroscopy as a method for exoplanet atmospheric characterization has expanded our capability to study non-transiting planets, increasing the number of planets accessible for observation. Many of the most…

地球与行星天体物理 · 物理学 2021-12-22 Isaac Malsky , Emily Rauscher , Eliza M. R. Kempton , Michael Roman , Deryl Long , Caleb K. Harada

We present a coupled 3-D atmospheric dynamics and radiative transfer model to predict the disk-integrated thermal emission spectra of transiting exoplanets in edge-on orbits. We calculate spectra at high resolution to examine the extent to…

地球与行星天体物理 · 物理学 2017-12-27 Jisheng Zhang , Eliza Kempton , Emily Rauscher

Many giant exoplanets in close orbits have observed radii which exceed theoretical predictions. One suggested explanation for this discrepancy is heat deposited deep inside the atmospheres of these "hot Jupiters". Here, we study extended…

地球与行星天体物理 · 物理学 2016-03-08 Sivan Ginzburg , Re'em Sari

Only one exoplanet has so far been mapped in both longitude and latitude, but the James Webb Space Telescope should provide mapping-quality data for dozens of exoplanets. The thermal phase mapping problem has previously been solved…

地球与行星天体物理 · 物理学 2018-11-07 E. Rauscher , V. Suri , N. B. Cowan

Basic atmospheric properties such as albedo and heat redistribution between day and nightside have been inferred for a number of planets using observations of secondary eclipses and thermal phase curves. Optical phase curves have not yet…

地球与行星天体物理 · 物理学 2016-03-09 P. von Paris , P. Gratier , P. Bordé , F. Selsis

The physical characteristics and atmospheric chemical composition of newly discovered exoplanets are often inferred from their transit spectra which are obtained from complex numerical models of radiative transfer. Alternatively, simple…

地球与行星天体物理 · 物理学 2021-12-23 Konstantin T. Matchev , Katia Matcheva , Alexander Roman