232 citations · 2.3k across the 46 of their papers we have counts for
46 papers
Rotational Mapping and Regional Atmospheric Retrievals of Variable Brown Dwarfs: Application to Luhman 16B and SIMP 0136
Ruizhe Wang, Heather A. Knuton, Julie Inglis +1
We present a Bayesian framework for converting time-resolved spectroscopy into rotation-inferred regional spectra and atmospheric constraints for variable brown dwarfs. We derive a…
Atmospheric Circulation of High-Obliquity Mini-Neptunes
Yanhong Lai, Xianyu Tan, Yubo Su
With the operation of JWST, atmospheric characterization has now extended to low-mass exoplanets. In compact multiplanetary systems, secular spin-orbital resonance may preserve hig…
Irradiated Atmospheres I: Heating by Vertical-Mixing Induced Energy Transport
Wei Zhong, Zhen-Tai Zhang, Hui-Sheng Zhong +3
Observations have revealed unique temperature profiles in hot Jupiter atmospheres. We propose that the energy transport by vertical mixing could lead to such thermal features. In o…
Latitude-dependent Atmospheric Waves and Long-period Modulations in Luhman 16 B from the Longest Lightcurve of an Extrasolar World
Nguyen Fuda, Dániel Apai, Domenico Nardiello +3
In this work, we present the longest photometric monitoring of up to 1200 hours of the strongly variable brown-dwarf binaries Luhman 16 AB and provide evidence of 5% variabili…
Modeling the day-night temperature variations of ultra-hot Jupiters: confronting non-grey general circulation models and observations
Xianyu Tan, Thaddeus D. Komacek, Natasha E. Batalha +4
Ultra-hot Jupiters (UHJs) are natural laboratories to study extreme physics in planetary atmospheres and their rich observational data sets are yet to be confronted with models wit…
Jupiter's equatorial quasi-quadrennial oscillation forced by internal thermal forcing
Yuchen Lian, Xianyu Tan, Yongyun Hu
Observations have shown that there exists downward propagation of alternating westward/eastward jets in Jupiter's equatorial stratosphere, with a quasi-period between four and six…
Dynamically coupled kinetic chemistry in brown dwarf atmospheres I. Performing global scale kinetic modelling
Elspeth K. H. Lee, Xianyu Tan, Shang-Min Tsai
The atmospheres of brown dwarfs have been long observed to exhibit a multitude of non-equilibrium chemical signatures and spectral variability across the L, T and Y spectral types.…
Photochemical hazes dramatically alter temperature structure and atmospheric circulation in 3D simulations of hot Jupiters
Maria E. Steinrueck, Tommi Koskinen, Panayotis Lavvas +5
Photochemical hazes are expected to form in hot Jupiter atmospheres and may explain the strong scattering slopes and muted spectral features observed in the transmission spectra of…
Hotter Than Expected: HST/WFC3 Phase-resolved Spectroscopy of a Rare Irradiated Brown Dwarf with Strong Internal Heat Flux
Rachael C. Amaro, Daniel Apai, Yifan Zhou +8
With infrared flux contrasts larger than typically seen in hot Jupiter, tidally-locked white dwarf-brown dwarf binaries offer a superior opportunity to investigate atmospheric proc…
A Mini-Chemical Scheme with Net Reactions for 3D GCMs II. 3D thermochemical modelling of WASP-39b and HD 189733b
Elspeth K. H. Lee, Shang-Min Tsai, Mark Hammond +1
The chemical inventory of hot Jupiter (HJ) exoplanets atmospheres continue to be observed by various ground and space based instruments in increasing detail and precision. It is ex…
A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b
Louis-Philippe Coulombe, Björn Benneke, Ryan Challener +73
Close-in giant exoplanets with temperatures greater than 2,000 K (''ultra-hot Jupiters'') have been the subject of extensive efforts to determine their atmospheric properties using…
Patchy Forsterite Clouds in the Atmospheres of Two Highly Variable Exoplanet Analogs
Johanna M. Vos, Ben Burningham, Jacqueline K. Faherty +12
We present an atmospheric retrieval analysis of a pair of highly variable, Myr old, early-T type planetary-mass exoplanet analogs SIMP J01365662+0933473 and 2MASS J213926…
The effect of interior heat flux on the atmospheric circulation of hot and ultra-hot Jupiters
Thaddeus D. Komacek, Peter Gao, Daniel P. Thorngren +2
Many hot and ultra-hot Jupiters have inflated radii, implying that their interiors retain significant entropy from formation. These hot interiors lead to an enhanced internal heat…
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…
The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 Micron Spectrum of the Planetary-Mass Companion VHS 1256-1257 b
Brittany E. Miles, Beth A. Biller, Polychronis Patapis +101
We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a 20 M widely separated (8\arcsec, a = 150 au), young, planetary-…
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.…
The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High Contrast Imaging of the Exoplanet HIP 65426 b from 2-16 m
Aarynn L. Carter, Sasha Hinkley, Jens Kammerer +108
We present JWST Early Release Science (ERS) coronagraphic observations of the super-Jupiter exoplanet, HIP 65426 b, with the Near-Infrared Camera (NIRCam) from 2-5 m, and with t…
Tracing the Top-of-the-atmosphere and Vertical Cloud Structure of a fast-rotating late T-dwarf
Elena Manjavacas, Theodora Karalidi, Xianyu Tan +4
Only a handful of late-T brown dwarfs have been monitored for spectro-photometric variability, leaving incomplete the study of the atmospheric cloud structures of the coldest brown…
Patchy nightside clouds on ultra-hot Jupiters: General Circulation Model simulations with radiatively active cloud tracers
Thaddeus D. Komacek, Xianyu Tan, Peter Gao +1
The atmospheres of ultra-hot Jupiters have been characterized in detail through recent phase curve and low- and high-resolution emission and transmission spectroscopic observations…
Jet Streams and Tracer Mixing in the Atmospheres of Brown Dwarfs and Isolated Young Giant Planets
Xianyu Tan
Observations of brown dwarfs and relatively isolated young extrasolar giant planets have provided unprecedented details to probe atmospheric dynamics in a new regime. Questions abo…
Weak Seasonality on Temperate Exoplanets Around Low-mass Stars
Xianyu Tan
Planets with non-zero obliquity and/or orbital eccentricity experience seasonal variations of stellar irradiation at local latitudes. The extent of the atmospheric response can be…
Cloud-convection feedback in brown dwarfs atmosphere
Maxence Lefèvre, Xianyu Tan, Elspeth K. H. Lee +1
Numerous observational evidence has suggested the presence of active meteorology in the atmospheres of brown dwarfs. A near-infrared brightness variability has been observed. Cloud…
Influences of internal forcing on atmospheric circulations of irradiated giant planets
Yuchen Lian, Adam P. Showman, Xianyu Tan +1
Close-in giant planets with strong stellar irradiation show atmospheric circulation patterns with strong equatorial jets and global-scale stationary waves. So far, almost all model…
Convection modeling of pure-steam atmospheres
Xianyu Tan, Maxence Lefevre, Raymond Pierrehumbert
Condensable species are crucial in shaping planetary climate. A wide range of planetary climate systems involve understanding non-dilute condensable substances and their influence…