271 citations · 3.5k across the 35 of their papers we have counts for
25 papers · 1 filter
Albedos, Equilibrium Temperatures, and Surface Temperatures of Habitable Planets
Anthony D. Del Genio, Nancy Y. Kiang, Michael J. Way +8
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 indicat…
Simulating the cloudy atmospheres of HD 209458 b and HD 189733 b with the 3D Met Office Unified Model
S. Lines, N. J. Mayne, Ian A. Boutle +9
To understand and compare the 3D atmospheric structure of HD 209458 b and HD 189733 b, focusing on the formation and distribution of cloud particles, as well as their feedback on t…
Observable signatures of wind--driven chemistry with a fully consistent three dimensional radiative hydrodynamics model of HD 209458b
Benjamin Drummond, N. J. Mayne, James Manners +8
We present a study of the effect of wind-driven advection on the chemical composition of hot Jupiter atmospheres using a fully-consistent 3D hydrodynamics, chemistry and radiative…
Modeling Venus-Like Worlds Through Time
M. J. Way, Anthony Del Genio, David S. Amundsen
We explore the atmospheric and surface history of a hypothetical paleo-Venus climate using a 3-D General Circulation Model. We constrain our model with the in-situ and remote sensi…
The effect of metallicity on the atmospheres of exoplanets with fully coupled 3D hydrodynamics, equilibrium chemistry, and radiative transfer
Benjamin Drummond, N. J. Mayne, Isabelle Baraffe +5
In this work we have performed a series of simulations of the atmosphere of GJ~1214b assuming different metallicities using the Met Office Unified Model (UM). The UM is a general c…
A library of ATMO forward model transmission spectra for hot Jupiter exoplanets
Jayesh M. Goyal, Nathan Mayne, David K. Sing +11
We present a grid of forward model transmission spectra, adopting an isothermal temperature-pressure profile, alongside corresponding equilibrium chemical abundances for 117 observ…
Habitable Climate Scenarios for Proxima Centauri b With a Dynamic Ocean
Anthony D. Del Genio, Michael J. Way, David S. Amundsen +4
The nearby exoplanet Proxima Centauri b will be a prime future target for characterization, despite questions about its retention of water. Climate models with static oceans sugges…
An ultrahot gas-giant exoplanet with a stratosphere
Thomas M. Evans, David K. Sing, Tiffany Kataria +24
Infrared radiation emitted from a planet contains information about the chemical composition and vertical temperature profile of its atmosphere. If upper layers are cooler than low…
A hybrid line list for CH and hot methane continuum
Sergei N. Yurchenko, David S. Amundsen, Jonathan Tennyson +1
Molecular line lists are important for modelling absorption and emission processes in atmospheres of different astronomical objects, such as cool stars and exoplanets. In order to…
HAT-P-26b: A Neptune-Mass Exoplanet with a Well Constrained Heavy Element Abundance
Hannah R. Wakeford, David K. Sing, Tiffany Kataria +11
A correlation between giant-planet mass and atmospheric heavy elemental abundance was first noted in the past century from observations of planets in our own Solar System, and has…
Advection of potential temperature in the atmosphere of irradiated exoplanets: a robust mechanism to explain radius inflation
P. Tremblin, G. Chabrier, N. J. Mayne +6
The anomalously large radii of strongly irradiated exoplanets have remained a major puzzle in astronomy. Based on a 2D steady state atmospheric circulation model, the validity of w…
Results from a set of three-dimensional numerical experiments of a hot Jupiter atmosphere
N. J. Mayne, F. Debras, I. Baraffe +7
We present highlights from a large set of simulations of a hot Jupiter atmosphere, nominally based on HD 209458b, aimed at exploring both the evolution of the deep atmosphere, and…
NIR-Driven Moist Upper Atmospheres of Synchronously Rotating Temperate Terrestrial Exoplanets
Yuka Fujii, Anthony D. Del Genio, David S. Amundsen
HO is a key molecule in characterizing atmospheres of temperate terrestrial planets, and observations of transmission spectra are expected to play a primary role in detecting i…
Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics 1.0: A General Circulation Model for Simulating the Climates of Rocky Planets
M. J. Way, Igor Aleinov, David. S. Amundsen +8
Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics (ROCKE-3D) is a 3-Dimensional General Circulation Model (GCM) developed at the NASA Godd…
Treatment of overlapping gaseous absorption with the correlated-k method in hot Jupiter and brown dwarf atmosphere models
David S. Amundsen, Pascal Tremblin, James Manners +2
The correlated-k method is frequently used to speed up radiation calculations in both one-dimensional and three-dimensional atmosphere models. An inherent difficulty with this meth…
The UK Met Office GCM with a sophisticated radiation scheme applied to the hot Jupiter HD 209458b
David S. Amundsen, Nathan J. Mayne, Isabelle Baraffe +6
To study the complexity of hot Jupiter atmospheres revealed by observations of increasing quality, we have adapted the UK Met Office global circulation model (GCM), the Unified Mod…
The Effects of Consistent Chemical Kinetics Calculations on the Pressure-Temperature Profiles and Emission Spectra of Hot Jupiters
Benjamin Drummond, Pascal Tremblin, Isabelle Baraffe +4
In this work we investigate the impact of calculating non-equilibrium chemical abundances consistently with the temperature structure for the atmospheres of highly-irradiated, clos…
Detection of H2O and evidence for TiO/VO in an ultra hot exoplanet atmosphere
Thomas M. Evans, David K. Sing, Hannah R. Wakeford +7
We present a primary transit observation for the ultra hot (Teq~2400K) gas giant expolanet WASP-121b, made using the Hubble Space Telescope Wide Field Camera 3 in spectroscopic mod…
The mineral clouds on HD 209458b and HD189733b
Ch. Helling, G. Lee, I. Dobbs-Dixon +7
3D atmosphere model results are used to comparatively study the kinetic, non-equilibrium cloud formation in the atmospheres of two example planets guided by the giant gas planets H…
The Need for Laboratory Work to Aid in The Understanding of Exoplanetary Atmospheres
Jonathan J. Fortney, Tyler D. Robinson, Shawn Domagal-Goldman +31
Advancements in our understanding of exoplanetary atmospheres, from massive gas giants down to rocky worlds, depend on the constructive challenges between observations and models.…
Cloudless atmospheres for L/T dwarfs and extra-solar giant planets
P. Tremblin, D. S. Amundsen, G. Chabrier +5
The admitted, conventional scenario to explain the complex spectral evolution of brown dwarfs (BD) since their first detections twenty years ago, has always been the key role playe…
A uniform analysis of HD209458b Spitzer/IRAC lightcurves with Gaussian process models
Thomas M. Evans, Suzanne Aigrain, Neale Gibson +4
We present an analysis of Spitzer/IRAC primary transit and secondary eclipse lightcurves measured for HD209458b, using Gaussian process models to marginalise over the intrapixel se…
Accuracy tests of radiation schemes used in hot Jupiter global circulation models
David Skålid Amundsen, Isabelle Baraffe, Pascal Tremblin +4
The treatment of radiation transport in global circulation models (GCMs) is crucial to correctly describe Earth and exoplanet atmospheric dynamics processes. The two-stream approxi…
The UM, a fully--compressible, non--hydrostatic, deep atmosphere GCM, applied to hot Jupiters
N. J. Mayne, I. Baraffe, David M. Acreman +6
We are adapting the Global Circulation Model (GCM) of the UK Met Office, the so--called Unified Model (UM), for the study of hot Jupiters. In this work we demonstrate the successfu…