372 citations · 9.2k across the 159 of their papers we have counts for
18 papers · 1 filter
All along the line of sight: a closer look at opening angles and absorption regions in the atmospheres of transiting exoplanets
Joost P. Wardenier, Vivien Parmentier, Elspeth K. H. Lee
Transmission spectra contain a wealth of information about the atmospheres of transiting exoplanets. However, large thermal and chemical gradients along the line of sight can lead…
A solar C/O and sub-solar metallicity in a hot Jupiter atmosphere
Michael R. Line, Matteo Brogi, Jacob L. Bean +13
Measurements of the atmospheric carbon (C) and oxygen (O) relative to hydrogen (H) in hot Jupiters (relative to their host stars) provide insight into their formation location and…
A unique hot Jupiter spectral sequence with evidence for compositional diversity
Megan Mansfield, Michael R. Line, Jacob L. Bean +11
The emergent spectra of close-in, giant exoplanets ("hot Jupiters") are expected to be distinct from those of self-luminous objects with similar effective temperatures because hot…
HST/WFC3 Complete Phase-resolved Spectroscopy of White Dwarf-Brown Dwarf Binaries WD 0137 and EPIC 2122
Yifan Zhou, Dániel Apai, Xianyu Tan +7
Brown dwarfs in close-in orbits around white dwarfs offer an excellent opportunity to investigate properties of fast-rotating, tidally-locked, and highly-irradiated atmospheres. We…
Mapping the pressure-dependent day-night temperature contrast of a strongly irradiated atmosphere with HST spectroscopic phase curve
Ben W. P. Lew, Dániel Apai, Yifan Zhou +6
Many brown dwarfs are on ultra-short period and tidally-locked orbits around white dwarf hosts. Because of these small orbital separations, the brown dwarfs are irradiated at level…
Towards multi-dimensional analysis of transmission spectroscopy. Part II: Day-night induced biases in retrievals from hot to ultra-hot Jupiters
William Pluriel, Jeremy Leconte, Vivien Parmentier +4
Hot Jupiters are very good targets for transmission spectroscopy analysis. Their atmospheres have a large scale height implying a high signal to noise ratio. As these planets orbit…
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…
The air over there: exploring exoplanet atmospheres
Laura Schaefer, Vivien Parmentier
Atmospheric compositions for rocky exoplanets will depend strongly on the bulk planetary composition and the orbital position of the planet. Non-traditional gases may be present in…
The Impact of Mixing Treatments on Cloud Modelling in 3D Simulations of Hot Jupiters
D. A. Christie, N. J. Mayne, S. Lines +7
We present results of 3D hydrodynamical simulations of HD209458b including a coupled, radiatively-active cloud model ({\sc EddySed}). We investigate the role of the mixing by repla…
Simulating gas giant exoplanet atmospheres with Exo-FMS: Comparing semi-grey, picket fence and correlated-k radiative-transfer schemes
Elspeth K. H. Lee, Vivien Parmentier, Mark Hammond +5
Radiative-transfer (RT) is a fundamental part of modelling exoplanet atmospheres with general circulation models (GCMs). An accurate RT scheme is required for estimates of the atmo…
Decomposing the Iron Cross-Correlation Signal of the Ultra-Hot Jupiter WASP-76b in Transmission using 3D Monte-Carlo Radiative Transfer
Joost P. Wardenier, Vivien Parmentier, Elspeth K. H. Lee +2
Ultra-hot Jupiters are tidally locked gas giants with dayside temperatures high enough to dissociate hydrogen and other molecules. Their atmospheres are vastly non-uniform in terms…
Ariel: Enabling planetary science across light-years
Giovanna Tinetti, Paul Eccleston, Carole Haswell +313
Ariel, the Atmospheric Remote-sensing Infrared Exoplanet Large-survey, was adopted as the fourth medium-class mission in ESA's Cosmic Vision programme to be launched in 2029. Durin…
The Dark World: A Tale of WASP-43b in Reflected Light with HST WFC3/UVIS
Jonathan Fraine, Laura C. Mayorga, Kevin B. Stevenson +14
Optical, reflected light eclipse observations provide a direct probe of the exoplanet scattering properties, such as from aerosols. We present here the photometric, reflected light…
A new approach to spectroscopic phase curves: The emission spectrum of WASP-12b observed in quadrature with HST/WFC3
J. Arcangeli, J. -M. Désert, V. Parmentier +2
We analyse emission spectra of WASP-12b from a partial phase curve observed over three epochs with the Hubble Space Telescope, covering eclipse, quadrature, and transit, respective…
Water Ice Cloud Variability & Multi-Epoch Transmission Spectra of TRAPPIST-1e
E. M. May, J. Taylor, T. D. Komacek +2
The precise characterization of terrestrial atmospheres with the James Webb Space Telescope (JWST) is one of the utmost goals of exoplanet astronomy in the next decade. With JWST's…
Evidence for disequilibrium chemistry from vertical mixing in hot Jupiter atmospheres. A comprehensive survey of transiting close-in gas giant exoplanets with warm-Spitzer/IRAC
C. Baxter, J-M. Désert, S-M. Tsai +10
[Abridged] Aims. We present a large atmospheric study of 49 gas giant exoplanets using infrared transmission photometry with Spitzer/IRAC at 3.6 and 4.5um. Methods. We uniformly an…
Cloud property trends in hot and ultra-hot giant gas planets (WASP-43b, WASP-103b, WASP-121b, HAT-P-7b, and WASP-18b)
Ch. Helling, D. Lewis, D. Samra +8
Ultra-hot Jupiters are the hottest exoplanets discovered so far. Observations begin to provide insight into the composition of their extended atmospheres and their chemical day/nig…
Aerosols in Exoplanet Atmospheres
Peter Gao, Hannah R. Wakeford, Sarah E. Moran +1
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 distributi…