232 citations · 1.3k across the 32 of their papers we have counts for
30 papers · 1 filter
Investigating Thermal Contrasts Between Jupiter's Belts, Zones, and Polar Vortices with VLT/VISIR
Deborah Bardet, Padraig T. Donnelly, Leigh N. Fletcher +8
Using images at multiple mid-infrared wavelengths, acquired in May 2018 using the VISIR instrument on ESO's Very Large Telescope (VLT), we study Jupiter's pole-to-pole thermal, che…
A Direct Comparison between the use of Double Gray and Multiwavelength Radiative Transfer in a General Circulation Model with and without Radiatively Active Clouds
Isaac Malsky, Emily Rauscher, Michael T. Roman +5
Inhomogeneous cloud formation and wavelength-dependent phenomena are expected to shape hot Jupiter atmospheres. We present a General Circulation Model (GCM) with multiwavelength "p…
Latitudinal variations in methane abundance, aerosol opacity and aerosol scattering efficiency in Neptune's atmosphere determined from VLT/MUSE
Patrick G. J. Irwin, Jack Dobinson, Arjuna James +11
Spectral observations of Neptune made in 2019 with the MUSE instrument at the Very Large Telescope in Chile have been analysed to determine the spatial variation of aerosol scatter…
Saturn's Atmosphere in Northern Summer Revealed by JWST/MIRI
Leigh N. Fletcher, Oliver R. T. King, Jake Harkett +8
Saturn's northern summertime hemisphere was mapped by JWST/MIRI (4.9-27.9 m) in November 2022, tracing the seasonal evolution of temperatures, aerosols, and chemical species in…
Spectral determination of the colour and vertical structure of dark spots in Neptune's atmosphere
Patrick G. J. Irwin, Jack Dobinson, Arjuna James. Michael H. Wong +12
Previous observations of dark vortices in Neptune's atmosphere, such as Voyager-2's Great Dark Spot, have been made in only a few, broad-wavelength channels, which has hampered eff…
Evolution of Neptune at Near-Infrared Wavelengths from 1994 through 2022
Erandi Chavez, Imke de Pater, Erin Redwing +15
Using archival near-infrared observations from the Keck and Lick Observatories and the Hubble Space Telescope, we document the evolution of Neptune's cloud activity from 1994 to 20…
A reflective, metal-rich atmosphere for GJ 1214b from its JWST phase curve
Eliza M. -R. Kempton, Michael Zhang, Jacob L. Bean +30
There are no planets intermediate in size between Earth and Neptune in our Solar System, yet these objects are found around a substantial fraction of other stars. Population statis…
The Hazy and Metal-Rich Atmosphere of GJ 1214 b Constrained by Near and Mid-Infrared Transmission Spectroscopy
Peter Gao, Anjali A. A. Piette, Maria E. Steinrueck +12
The near-infrared transmission spectrum of the warm sub-Neptune exoplanet GJ 1214 b has been observed to be flat and featureless, implying a high metallicity atmosphere with abunda…
Mid-Infrared Observations of the Giant Planets
Michael T. Roman
The mid-infrared spectral region provides a unique window into the atmospheric temperature, chemistry, and dynamics of the giant planets. From more than a century of mid-infrared r…
A Lack of Variability Between Repeated Spitzer Phase Curves of WASP-43b
Matthew M. Murphy, Thomas G. Beatty, Michael T. Roman +8
Though the global atmospheres of hot Jupiters have been extensively studied using phase curve observations, the level of time variability in these data is not well constrained. To…
Saturn's Seasonal Variability from Four Decades of Ground-Based Mid-Infrared Observations
James S. D. Blake, Leigh N. Fletcher, Glenn S. Orton +8
A multi-decade record of ground-based mid-infrared (7-25 m) images of Saturn is used to explore seasonal and non-seasonal variability in thermal emission over more than a Saturn…
Early Release Science of the exoplanet WASP-39b with JWST NIRISS
Adina D. Feinstein, Michael Radica, Luis Welbanks +86
Transmission spectroscopy provides insight into the atmospheric properties and consequently the formation history, physics, and chemistry of transiting exoplanets. However, obtaini…
CAMEMBERT: A Mini-Neptunes GCM Intercomparison, Protocol Version 1.0. A CUISINES Model Intercomparison Project
Duncan A. Christie, Elspeth K. H. Lee, Hamish Innes +19
With an increased focus on the observing and modelling of mini-Neptunes, there comes a need to better understand the tools we use to model their atmospheres. In this paper, we pres…
Identification of carbon dioxide in an exoplanet atmosphere
The JWST Transiting Exoplanet Community Early Release Science Team, Eva-Maria Ahrer, Lili Alderson +129
Carbon dioxide (CO2) is a key chemical species that is found in a wide range of planetary atmospheres. In the context of exoplanets, CO2 is an indicator of the metal enrichment (i.…
Hazy blue worlds: A holistic aerosol model for Uranus and Neptune, including Dark Spots
Patrick G. J. Irwin, Nicholas A. Teanby, Leigh N. Fletcher +7
We present a reanalysis (using the Minnaert limb-darkening approximation) of visible/near-infrared (0.3 - 2.5 micron) observations of Uranus and Neptune made by several instruments…
Sub-Seasonal Variation in Neptune's Mid-Infrared Emission
Michael T. Roman, Leigh N. Fletcher, Glenn S. Orton +10
We present an analysis of all currently available ground-based imaging of Neptune in the mid-infrared. Dating between 2003 and 2020, the images reveal changes in Neptune's mid-infr…
Modeling the high-resolution emission spectra of clear and cloudy non-transiting hot Jupiters
Isaac Malsky, Emily Rauscher, Eliza M. R. Kempton +3
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…
3D radiative-transfer for exoplanet atmospheres. gCMCRT: a GPU accelerated MCRT code
Elspeth K. H. Lee, Joost P. Wardenier, Bibiana Prinoth +10
Radiative-transfer (RT) is a key component for investigating atmospheres of planetary bodies. With the 3D nature of exoplanet atmospheres being important in giving rise to their ob…
Exploring the Effects of Active Magnetic Drag in a GCM of the Ultra-Hot Jupiter WASP-76b
Hayley Beltz, Emily Rauscher, Michael Roman +1
Ultra-hot Jupiters represent an exciting avenue for testing extreme physics and observing atmospheric circulation regimes not found in our solar system. Their high temperatures res…
Refining Saturn's deuterium-hydrogen ratio via IRTF/TEXES spectroscopy
James S. D. Blake, Leigh N. Fletcher, Thomas K. Greathouse +7
The abundance of deuterium in giant planet atmospheres provides constraints on the reservoirs of ices incorporated into these worlds during their formation and evolution. Motivated…
Longitudinal Variations in the Stratosphere of Uranus from the Spitzer Infrared Spectrometer
Naomi Rowe-Gurney, Leigh N. Fletcher, Glenn S. Orton +5
NASA's Spitzer Infrared Spectrometer (IRS) acquired mid-infrared (5-37 microns) disc-averaged spectra of Uranus very near to its equinox in December 2007. A mean spectrum was const…
Clouds in Three-Dimensional Models of Hot Jupiters Over a Wide Range of Temperatures I: Thermal Structures and Broadband Phase Curve Predictions
Michael T. Roman, Eliza M. -R. Kempton, Emily Rauscher +3
Using a general circulation model (GCM), we investigate trends in simulated hot Jupiter atmospheres for a range of irradiation temperatures (1,500 - 4,000 K), surface gravities (10…
Atmospheric chemistry on Uranus and Neptune
J. I. Moses, T. Cavalie, L. N. Fletcher +1
Comparatively little is known about atmospheric chemistry on Uranus and Neptune, because remote spectral observations of these cold, distant ``Ice Giants'' are challenging, and eac…
Signatures of Clouds in Hot Jupiter Atmospheres: Modeled High Resolution Emission Spectra from 3D General Circulation Models
Caleb K. Harada, Eliza M. -R. Kempton, Emily Rauscher +4
Observations of scattered light and thermal emission from hot Jupiter exoplanets have suggested the presence of inhomogeneous aerosols in their atmospheres. 3D general circulation…