Chemical Equilibrium Abundances in Brown Dwarf and Extrasolar Giant Planet Atmospheres

Abstract

We calculate detailed chemical abundance profiles for a variety of brown dwarf and extrasolar giant planet atmosphere models, focusing in particular on Gliese 229B, and derive the systematics of the changes in the dominant reservoirs of the major elements with altitude and temperature. We assume an Anders and Grevesse (1989) solar composition of 27 chemical elements and track 330 gas--phase species, including the monatomic forms of the elements, as well as about 120 condensates. We address the issue of the formation and composition of clouds in the cool atmospheres of substellar objects and explore the rain out and depletion of refractories. We conclude that the opacity of clouds of low--temperature ($\le$900 K), small--radius condensibles (specific chlorides and sulfides), may be responsible for the steep spectrum of Gliese 229B observed in the near infrared below 1 \mic. Furthermore, we assemble a temperature sequence of chemical transitions in substellar atmospheres that may be used to anchor and define a sequence of spectral types for substellar objects with T${}_{eff}$s from $\sim$2200 K to $\sim$100 K.

arXiv comment57 pages total, LaTeX, 14 figures, 5 tables, also available in uuencoded, gzipped, and tarred form via anonymous ftp at www.astrophysics.arizona.edu (cd to pub/burrows/chem), submitted to Ap. J

References in corpus (10)

• A Non-Gray Theory of Extrasolar Giant Planets and Brown Dwarfs
• The Discovery of a Planetary Companion to 16 Cygni B
• Atmospheric, Evolutionary, and Spectral Models of the Brown Dwarf Gliese 229 B
• Reflected Spectra and Albedos of Extrasolar Giant Planets I: Clear and Cloudy Atmospheres
• Brown Dwarfs in the Pleiades Cluster Confirmed by the Lithium Test
• The Spectrum of the Brown Dwarf Gliese 229B
• Spectral evidence for dust in late-type M dwarfs
• Prospects for Detection of Extra-Solar Giant Planets by Next-Generation Telescopes
• DENIS-P J1228.2-1547 -- A New Benchmark Brown Dwarf
• Liquid metallic hydrogen and the structure of brown dwarfs and giant planets

Cited by in corpus (319)

• Detection of an Extrasolar Planet Atmosphere
• Evolutionary models for very-low-mass stars and brown dwarfs with dusty atmospheres
• The Limiting Effects of Dust in Brown Dwarf Model Atmospheres
• The Theory of Brown Dwarfs and Extrasolar Giant Planets
• A Unified Theory for the Atmospheres of the Hot and Very Hot Jupiters: Two Classes of Irradiated Atmospheres
• Astrometry and Photometry for Cool Dwarfs and Brown Dwarfs
• Sixty-seven Additional L Dwarfs Discovered by the Two Micron All Sky Survey (2MASS)
• A Temperature and Abundance Retrieval Method for Exoplanet Atmospheres
• Theory of Low-Mass Stars and Substellar Objects
• Disequilibrium Carbon, Oxygen, and Nitrogen Chemistry in the Atmospheres of HD 189733b and HD 209458b
• L' and M' Photometry of Ultracool Dwarfs
• C/O ratio as a Dimension for Characterizing Exoplanetary Atmospheres
• A Possible Bifurcation in Atmospheres of Strongly Irradiated Stars and Planets
• Exoplanet Atmospheres
• The Spectra of T Dwarfs I: Near-Infrared Data and Spectral Classification
• Binarity in Brown Dwarfs: T Dwarf Binaries Discovered with the Hubble Space Telescope WPFC2
• Transmission Spectra as Diagnostics of Extrasolar Giant Planet Atmospheres
• The Discovery of Y Dwarfs Using Data from the Wide-field Infrared Survey Explorer (WISE)
• L and T Dwarf Models and the L to T Transition
• The 0.8-14.5 micron Spectra of Mid-L to Mid-T Dwarfs: Diagnostics of Effective Temperature, Grain Sedimentation, Gas Transport, and Surface Gravity
• Gaseous Mean Opacities for Giant Planet and Ultracool Dwarf Atmospheres over a Range of Metallicities and Temperatures
• 3D mixing in hot Jupiter atmospheres. I. application to the day/night cold trap in HD 209458b
• Clouds and Chemistry: Ultracool Dwarf Atmospheric Properties from Optical and Infrared Colors
• Atomic and Molecular Opacities for Brown Dwarf and Giant Planet Atmospheres
• Exoplanetary Atmospheres: Key Insights, Challenges and Prospects
• Albedo and Reflection Spectra of Extrasolar Giant Planets
• High C/O Ratio and Weak Thermal Inversion in the Very Hot Atmosphere of Exoplanet WASP-12b
• Atmospheric Parameters of Field L and T Dwarfs
• Photometric Light Curves and Polarization of Close-in Extrasolar Giant Planets
• Can TiO Explain Thermal Inversions in the Upper Atmospheres of Irradiated Giant Planets?
• Transitions in the cloud composition of hot Jupiters
• A new set of atmosphere and evolution models for cool T-Y brown dwarfs and giant exoplanets
• Possible thermochemical disequilibrium in the atmosphere of the exoplanet GJ 436b
• The Deuterium-Burning Mass Limit for Brown Dwarfs and Giant Planets
• Beyond the T Dwarfs: Theoretical Spectra, Colors, and Detectability of the Coolest Brown Dwarfs
• Theoretical Spectra and Light Curves of Close-in Extrasolar Giant Planets and Comparison with Data
• Chemical consequences of the C/O ratio on hot Jupiters: Examples from WASP-12b,CoRoT-2b, XO-1b, and HD 189733b
• Theoretical Spectra and Atmospheres of Extrasolar Giant Planets
• Equilibrium chemistry down to 100 K - Impact of silicates and phyllosilicates on carbon/oxygen ratio
• Evidence for Cloud Disruption in the L/T Dwarf Transition
• Fingering convection and cloudless models for cool brown dwarf atmospheres
• Thermal Emission and Albedo Spectra of Super Earths with Flat Transmission Spectra
• Synthetic Spectra and Colors of Young Giant Planet Atmospheres: Effects of Initial Conditions and Atmospheric Metallicity
• A chemical model for the atmosphere of hot Jupiters
• KROME - a package to embed chemistry in astrophysical simulations
• Discovery of a Brown Dwarf Companion to Gliese 570ABC: A 2MASS T Dwarf Significantly Cooler than Gliese 229B
• The Near-Infrared and Optical Spectra of Methane Dwarfs and Brown Dwarfs
• Dynamics and Disequilibrium Carbon Chemistry in Hot Jupiter Atmospheres, With Application to HD 209458b
• On the Radii of Close-in Giant Planets
• HST hot-Jupiter transmission spectral survey: detection of potassium in WASP-31b along with a cloud deck and Rayleigh scattering
• Mass-Metallicity Trends in Transiting Exoplanets from Atmospheric Abundances of H${}_2$O, Na, and K
• An accurate, extensive, and practical line list of methane for the HITEMP database
• Detection of H2O and evidence for TiO/VO in an ultra hot exoplanet atmosphere
• A search for L dwarf binary systems
• Transmission spectral properties of clouds for hot Jupiter exoplanets
• L Dwarfs and the Substellar Mass Function
• Spitzer Infrared Spectrograph Observations of M, L, and T Dwarfs
• A Spectrum of an Extrasolar Planet
• VULCAN: an Open-Source, Validated Chemical Kinetics Python Code for Exoplanetary Atmospheres
• Hubble Space Telescope NICMOS Observations of T Dwarfs: Brown Dwarf Multiplicity and New Probes of the L/T Transition
• Exoplanetary Atmospheres - Chemistry, Formation Conditions, and Habitability
• On the Cool Side: Modeling the Atmospheres of Brown Dwarfs and Giant Planets
• The Discovery of a Field Methane Dwarf from Sloan Digital Sky Survey Commissioning Data
• Strong Brightness Variations Signal Cloudy-to-Clear Transition of Brown Dwarfs
• HST hot Jupiter Transmission Spectral Survey: A detection of Na and strong optical absorption in HAT-P-1b
• The physical properties of extrasolar planets
• A Method for Determining the Physical Properties of the Coldest Known Brown Dwarfs
• Six New Planets from the Keck Precision Velocity Survey
• An Upper Limit on the Reflected Light from the Planet Orbiting the Star tau Bootis
• Calculations of the Far-Wing Line Profiles of Sodium and Potassium in the Atmospheres of Substellar-Mass Objects
• Water Clouds in Y Dwarfs and Exoplanets
• An HST Optical to Near-IR Transmission Spectrum of the Hot Jupiter WASP-19b: Detection of Atmospheric Water and Likely Absence of TiO
• Four nearby L dwarfs
• A solar C/O and sub-solar metallicity in a hot Jupiter atmosphere
• Accuracy tests of radiation schemes used in hot Jupiter global circulation models
• Optimal Estimation Retrievals of the Atmospheric Structure and Composition of HD 189733b from Secondary Eclipse Spectroscopy
• Five carbon- and nitrogen-bearing species in a hot giant planet's atmosphere
• The Spectra of T Dwarfs. II. Red Optical Data
• Model atmospheres for massive gas giants with thick clouds: Application to the HR 8799 planets and predictions for future detections
• Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs I: Characterizing Benchmarks, Gl570D and HD3651B
• Identification of Absorption Features in an Extrasolar Planet Atmosphere
• The Effects of Consistent Chemical Kinetics Calculations on the Pressure-Temperature Profiles and Emission Spectra of Hot Jupiters
• High-Resolution Spectroscopic Detection of TiO and Stratosphere in the Day-side of WASP-33b
• An optical transmission spectrum for the ultra-hot Jupiter WASP-121b measured with the Hubble Space Telescope
• Variability in ultra cool dwarfs: evidence for the evolution of surface features
• Weighing The Non-Transiting Hot Jupiter Tau BOO b
• Dust in the Photospheric Environment: Unified Cloudy Models of M, L, and T Dwarfs
• Molecular Abundances in the Atmosphere of the T Dwarf Gl 229B
• A Systematic Study of Departures from Chemical Equilibrium in the Atmospheres of Substellar Mass Objects
• Habitability and Biosignatures of Hycean Worlds
• L-dwarf variability: I-band observations
• Consistent simulations of substellar atmospheres and non-equilibrium dust-cloud formation
• Phase-Dependent Properties of Extrasolar Planet Atmospheres
• The Dependence of Brown Dwarf Radii on Atmospheric Metallicity and Clouds: Theory and Comparison with Observations
• High temperature condensate clouds in super-hot Jupiter atmospheres
• Observations of Exoplanet Atmospheres
• Forward and Inverse Modeling of the Emission and Transmission Spectrum of GJ 436b: Investigating Metal Enrichment, Tidal Heating, and Clouds
• Clouds, Gravity and Metallicity in Blue L dwarfs: The Case of 2MASS J11263991-5003550
• TiO and VO broad band absorption features in the optical spectrum of the atmosphere of the hot-Jupiter HD209458b
• A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b
• Extra-Solar Planets
• New CrH Opacities for the Study of L and Brown Dwarf Atmospheres
• High Metallicity and Non-equilibrium Chemistry in the Dayside Atmosphere of hot-Neptune GJ 436b
• A global analysis of Spitzer and new HARPS data confirms the loneliness and metal-richness of GJ 436 b
• HST hot-Jupiter transmission spectral survey: Haze in the atmosphere of WASP-6b
• New H2 collision-induced absorption and NH3 opacity and the spectra of the coolest brown dwarfs
• Hubble Space Telescope hot Jupiter Transmission Spectral Survey: detection of water in HAT-P-1b from Wide Field Camera 3 near-infrared spatial scan observations
• The interior and atmosphere of the habitable-zone exoplanet K2-18b
• The cloudy shape of hot Jupiter thermal phase curves
• The 2MASS Wide-Field T Dwarf Search. IV Unting out T dwarfs with Methane Imaging
• Photometric and Spectral Signatures of 3D Models of Transiting Giant Exoplanets
• A library of ATMO forward model transmission spectra for hot Jupiter exoplanets
• Chemical Kinetics on Extrasolar Planets
• Formation of Silicate and Titanium Clouds on Hot Jupiters
• Infrared Observations and Modeling of one of the Coolest T Dwarfs, Gl 570D
• The spectrum of hot methane in astronomical objects using a comprehensive computed line list
• 3D modeling of GJ1214b's atmosphere: vertical mixing driven by an anti-Hadley circulation
• Aerosols in Exoplanet Atmospheres
• Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs II: Properties of 11 T-dwarfs
• Where is the Water? Jupiter-like C/H ratio but strong H${}_2$O depletion found on $\tau$ Boötis b using SPIRou
• On the Inference of Thermal Inversions in Hot Jupiter Atmospheres
• A theoretical look at the direct detection of giant planets outside the Solar System
• Spectra and Diagnostics for the Direct Detection of Wide-Separation Extrasolar Giant Planets
• Spectra as Windows into Exoplanet Atmospheres
• Theoretical Spectral Models of T Dwarfs at Short Wavelengths and Their Comparison with Data
• The UK Met Office GCM with a sophisticated radiation scheme applied to the hot Jupiter HD 209458b
• Theoretical Transit Spectra for GJ 1214b and Other "Super-Earths"
• Simulating the cloudy atmospheres of HD 209458 b and HD 189733 b with the 3D Met Office Unified Model
• Interpreting the photometry and spectroscopy of directly imaged planets: a new atmospheric model applied to beta Pictoris b and SPHERE observations
• Discovery of a Bright Field Methane (T-type) Brown Dwarf by 2MASS
• Spitzer Phase Curves of KELT-1b and the Signatures of Nightside Clouds in Thermal Phase Observations
• Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. I. DENIS J220002.05-303832.9AB
• Optical Spectroscopy of 2MASS Color-Selected Ultracool Subdwarfs
• Infrared Observations During the Secondary Eclipse of HD 209458 b II. Strong Limits on the Infrared Spectrum Near 2.2 Microns
• Cloud busting: enstatite and quartz clouds in the atmosphere of 2M2224-0158
• Kelu-1 is a Binary L Dwarf: First Brown Dwarf Science from Laser Guide Star Adaptive Optics
• Phase Functions and Light Curves of Wide Separation Extrasolar Giant Planets
• Atmospheric Regimes and Trends on Exoplanets and Brown Dwarfs
• Highlights in the Study of Exoplanet Atmospheres
• On Signatures of Clouds in Exoplanetary Transit Spectra
• Spectroscopic rotation velocities of L dwarfs from VLT/UVES and their comparison with periods from photometric monitoring
• Statistical Analysis of Hubble/WFC3 Transit Spectroscopy of Extrasolar Planets
• Implications of three-dimensional chemical transport in hot Jupiter atmospheres: results from a consistently coupled chemistry-radiation-hydrodynamics model
• A new Search for Carbon Monoxide Absorption in the Transmission Spectrum of the Extrasolar Planet HD 209458b
• The Onset of Methane in L Dwarfs
• Clouds in Three-Dimensional Models of Hot Jupiters Over a Wide Range of Temperatures I: Thermal Structures and Broadband Phase Curve Predictions
• Resolved Near-Infrared Spectroscopy of WISE J104915.57-531906.1AB: A Flux-Reversal Binary at the L dwarf/T dwarf Transition
• TEA: A Code for Calculating Thermochemical Equilibrium Abundances
• The AllWISE Motion Survey, Part 2
• WASP-8b: Characterization of a Cool and Eccentric Exoplanet with Spitzer
• The Late-T Dwarf Companion to the Exoplanet Host Star HD 3651: A New Benchmark for Gravity and Metallicity Effects in Ultracool Spectra
• Exoplanet Classification and Yield Estimates for Direct Imaging Missions
• Chemistry of Low Mass Substellar Objects
• Spectroscopic Constants, Abundances, and Opacities of the TiH Molecule
• Clouds and Hazes in Exoplanet Atmospheres
• Photometric Variability at the L/T Dwarf Boundary
• Mid-infrared interferometry on spectral lines: III. Ammonia and Silane around IRC+10216 and VY CMa
• Atmosphere and Spectral Models of the Kepler-Field Planets HAT-P-7b and TrES-2
• Modeled Temperature-Dependent Clouds with Radiative Feedback in Hot Jupiter Atmospheres
• A Sensitive Search for Methane in the Infrared Spectrum of Tau Bootis
• Rotational periods of very young brown dwarfs and very low-mass stars in ChaI
• A Uniform Retrieval Analysis of Ultracool Dwarfs. III. Properties of Y-Dwarfs
• Signatures of Strong Magnetization and Metal-Poor Atmosphere for a Neptune-Size Exoplanet
• EXOPLINES: Molecular Absorption Cross-Section Database for Brown Dwarf and Giant Exoplanet Atmospheres
• Carbon Dioxide in Exoplanetary Atmospheres: Rarely Dominant Compared to Carbon Monoxide and Water in Hot, Hydrogen-dominated Atmospheres
• Analysis of The Hipparcos Measurements of HD10697 - A Mass Determination of a Brown-Dwarf Secondary
• Observable signatures of wind--driven chemistry with a fully consistent three dimensional radiative hydrodynamics model of HD 209458b
• Diurnal variations in the stratosphere of the ultrahot giant exoplanet WASP-121b
• How to identify exoplanet surfaces using atmospheric trace species in hydrogen-dominated atmospheres
• Patchy Forsterite Clouds in the Atmospheres of Two Highly Variable Exoplanet Analogs
• Discovery of a High Proper Motion L Dwarf Binary: 2MASS J15200224-4422419AB
• Unveiling shrouded oceans on temperate sub-Neptunes via transit signatures of solubility equilibria vs. gas thermochemistry
• Transit confirmation and improved stellar and planet parameters for the super-Earth HD 97658 b and its host star
• SDSS J141624.08+134826.7: A Nearby Blue L Dwarf From the Sloan Digital Sky Survey
• The effect of metallicity on the atmospheres of exoplanets with fully coupled 3D hydrodynamics, equilibrium chemistry, and radiative transfer
• The Center of Light: Spectroastrometric Detection of Exomoons
• Updated Spitzer Emission Spectroscopy of Bright Transiting Hot Jupiter HD189733b
• The Implications of 3D Thermal Structure on 1D Atmospheric Retrieval
• Modelling the Spectra of Planets, Brown Dwarfs and Stars using VSTAR
• A Library of Self-Consistent Simulated Exoplanet Atmospheres
• Theoretical Radii of Transiting Giant Planets: The Case of OGLE-TR-56b
• Warm Spitzer Photometry of Three Hot Jupiters: HAT-P-3b, HAT-P-4b and HAT-P-12b
• An optical transmission spectrum of the ultra-hot Jupiter WASP-33b. First indication of AlO in an exoplanet
• Simulating gas giant exoplanet atmospheres with Exo-FMS: Comparing semi-grey, picket fence and correlated-k radiative-transfer schemes
• An Improved Red Spectrum of the Methane or T-dwarf SDSS 1624+0029: Role of the Alkali Metals
• Planet accretion and the abundances of lithium isotopes
• Broad-band transmission spectrum and K-band thermal emission of WASP-43b as observed from the ground
• SDSS J080531.84+481233.0: An Unresolved L Dwarf/T Dwarf Binary
• J-Band Infrared Spectroscopy of a Sample of Brown Dwarfs Using Nirspec on Keck II
• Dust in the Photospheric Environment II. Effect on the Near Infrared Spectra of L and T Dwarfs
• Analytical Models of Exoplanetary Atmospheres. III. Gaseous C-H-O-N Chemistry with 9 Molecules
• Parallax and Luminosity Measurements of an L Subdwarf
• Observability of signatures of transport-induced chemistry in clear atmospheres of hot gas giant exoplanets
• LRG-BEASTS: transmission spectroscopy and retrieval analysis of the highly-inflated Saturn-mass planet WASP-39b
• Self-consistent Models of Y Dwarf Atmospheres with Water Clouds and Disequilibrium Chemistry
• Limits on the infrared photometric monitoring of brown dwarfs
• Detectable molecular features above hydrocarbon haze via transmission spectroscopy with JWST: Case studies of GJ 1214b-, GJ 436b-, HD 97658b-, and Kepler-51b-like planets
• The atmospheres of the hot-Jupiters Kepler-5b and Kepler-6b observed during occultations with Warm-Spitzer and Kepler
• A comparison of chemical models of exoplanet atmospheres enabled by TauREx 3.1
• Seeing above the Clouds with High Resolution Spectroscopy
• Phase light curves for extrasolar Jupiters and Saturns
• Clouds in Super-Earth Atmospheres: Chemical Equilibrium Calculations
• The Limits of the Primitive Equations of Dynamics for Warm, Slowly Rotating Small Neptunes and Super Earths
• Four-of-a-kind? Comprehensive atmospheric characterisation of the HR 8799 planets with VLTI/GRAVITY
• Infrared Observations During the Secondary Eclipse of HD 209458b: I. 3.6-Micron Occultation Spectroscopy Using the VLT
• Signatures of Nitrogen Chemistry in Hot Jupiter Atmospheres
• Overcast on Osiris: 3D radiative-hydrodynamical simulations of a cloudy hot Jupiter using the parameterised, phase-equilibrium cloud formation code EddySed
• From cold to hot irradiated gaseous exoplanets: Fingerprints of chemical disequilibrium in atmospheric spectra
• Optical phase curves as diagnostics for aerosol composition in exoplanetary atmospheres
• Empirically Determining Substellar Cloud Compositions in the era of JWST
• Quartz Clouds in the Dayside Atmosphere of the Quintessential Hot Jupiter HD 189733 b
• Chemical and physical characterization of collapsing low-mass prestellar dense cores
• Atmospheres as windows into sub-Neptune interiors: coupled chemistry and structure of hydrogen-silane-water envelopes
• The Dawes Review 3: The Atmospheres of Extrasolar Planets and Brown Dwarfs
• Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. II. 2MASS J 17072343-0558249AB
• New constraints on the formation and settling of dust in the atmospheres of young M and L dwarfs
• KELT-16b: A highly irradiated, ultra-short period hot Jupiter nearing tidal disruption
• Fully scalable forward model grid of exoplanet transmission spectra
• From cold to hot irradiated gaseous exoplanets: Toward an observation-based classification scheme
• Exoplanet Atmosphere Measurements from Transmission Spectroscopy and other Planet-Star Combined Light Observations
• Ground-based detections of thermal emission from the dense hot Jupiter WASP-43b in H and Ks-bands
• Impact of photochemical hazes and gases on exoplanet atmospheric thermal structure
• Models of Neptune-Mass Exoplanets: Emergent Fluxes and Albedos
• The physical mechanism behind M dwarf metallicity indicators and the role of C and O abundances
• The Impact of Mixing Treatments on Cloud Modelling in 3D Simulations of Hot Jupiters
• Uniform Forward-Modeling Analysis of Ultracool Dwarfs. II. Atmospheric Properties of 55 Late-T Dwarfs
• Examining the broadband emission spectrum of WASP-19b: A new z band eclipse detection
• A chemical kinetics code for modelling exoplanetary atmospheres
• A warm Jupiter transiting an M dwarf: A TESS single transit event confirmed with the Habitable-zone Planet Finder
• An observational study of dust nucleation in Mira ($o$ Ceti): II. Titanium oxides are negligible for nucleation at high temperatures
• Considerations for Atmospheric Retrieval of High-Precision Brown Dwarf Spectra
• The carbon-to-oxygen ratio: implications for the spectra of hydrogen-dominated exoplanet atmospheres
• The Direct Detectability of Giant Exoplanets in the Optical
• The ESO SupJup Survey I: Chemical and isotopic characterisation of the late L-dwarf DENIS J0255-4700 with CRIRES${}^{+}$
• JWST Transit Spectra I: Exploring Potential Biases and Opportunities in Retrievals of Tidally-locked Hot Jupiters with Clouds and Hazes
• Model atmospheres of sub-stellar mass objects
• Retrieval study of cool, directly imaged exoplanet 51 Eri b
• The HST PanCET Program: An Optical to Infrared Transmission Spectrum of HAT-P-32Ab
• Dust clouds or magnetic spots? Exploring the atmospheres of L dwarfs with time-resolved spectrophotometry
• Polycyclic Aromatic Hydrocarbons Orbiting HD 233517, an Evolved Oxygen-Rich Red Giant
• A 1.46-2.48 $\mu$m Spectroscopic Atlas of a T6 Dwarf (1060 K) Atmosphere with IGRINS: First Detections of H${}_2$S and H${}_2$, and Verification of H${}_2$O, CH${}_4$, and NH${}_3$ Line Lists
• The Schizophrenic Spectrum of LSR 1610-0040: a Peculiar M Dwarf/Subdwarf
• Community targets for JWST's early release science program: evaluation of WASP-63b
• EPIC211089792 b: an aligned and inflated hot jupiter in a young visual binary
• Characterization of Exoplanet Atmospheres with the Optical Coronagraph on WFIRST
• Molecular Simulations for the Spectroscopic Detection of Atmospheric Gases
• Atmospheric Chemistry for Astrophysicists: A Self-consistent Formalism and Analytical Solutions for Arbitrary C/O
• Multiple Scattering Polarization of Substellar-mass Objects : T-dwarfs
• The Search for an Atmospheric Signature of the Transiting Exoplanet HD 149026b
• A ground-based Ks-band detection of the thermal emission from the transiting exoplanet WASP-4b
• Information content of JWST-NIRSPEC transmission spectra of warm Neptunes
• The Impact of Phase Equilibrium Cloud Models on GCM Simulations of GJ~1214b
• Resolved Hubble Space spectroscopy of ultracool binary systems
• Silicate clouds and a circumplanetary disk in the YSES-1 exoplanet system
• A better characterization of the chemical composition of exoplanets atmospheres with ARIEL
• TOI-3984 A b and TOI-5293 A b: two temperate gas giants transiting mid-M dwarfs in wide binary systems
• TAU: A 1D radiative transfer code for transmission spectroscopy of extrasolar planet atmospheres
• CORMASS: A Compact and Efficient NIR Spectrograph for Studying Low-Mass Objects
• A Temperature Trend for Clouds and Hazes in Exoplanets Atmospheres
• Thermal emission from WASP-24b at 3.6 and 4.5 μm
• Oxygen depletion in giant planets with different formation histories
• VLT X-shooter spectroscopy of the nearest brown dwarf binary
• Optical linear polarization in ultra cool dwarfs: A tool to probe dust in the ultra cool dwarf atmospheres
• Evidence for chromium hydride in the atmosphere of Hot Jupiter WASP-31b
• Characterising Atmospheres of Cloudy Temperate Mini-Neptunes with JWST
• Transmission spectroscopy of WASP-52 b with JWST NIRISS: Water and helium atmospheric absorption, alongside prominent star-spot crossings
• The continued optical to mid-IR evolution of V838 Monocerotis
• A Comparison of Simulated JWST Observations Derived from Equilibrium and Non-Equilibrium Chemistry Models of Giant Exoplanets
• Polarization of L Dwarfs by Dust Scattering
• Chemical modeling of exoplanet atmospheres
• A Near-infrared Variability Survey of Young Planetary-mass Objects
• Self-consistent atmosphere modeling with cloud formation for low-mass stars and exoplanets
• A Direct Comparison between the use of Double Gray and Multiwavelength Radiative Transfer in a General Circulation Model with and without Radiatively Active Clouds
• Prospects for Directly Imaging Young Giant Planets at Optical Wavelengths
• Atmospheric Characterization of Hot Jupiter CoRoT-1 b Using the Wide Field Camera 3 on the Hubble Space Telescope
• Hunting for brown dwarf binaries and testing atmospheric models with X-Shooter
• JWST Transit Spectra II: Constraining Aerosol Species, Particle-size Distributions, Temperature, and Metallicity for Cloudy Exoplanets
• Clouds and Hazes in GJ 1214b's Metal-Rich Atmosphere
• A search for lithium in metal-poor L dwarfs
• Magma ocean interactions can explain JWST observations of the sub-Neptune TOI-270 d
• Constraints on TESS albedos for five hot Jupiters
• Primeval very low-mass stars and brown dwarfs -- VII. The discovery of the first wide M + L extreme subdwarf binary
• Toward More Reliable Analytic Thermochemical-equilibrium Abundances
• Polycyclic Aromatic Hydrocarbons in Exoplanet Atmospheres I. Thermochemical Equilibrium Models
• IGRINS observations of WASP-127 b: H${}_2$O, CO, and super-Solar atmospheric metallicity in the inflated sub-Saturn
• Impacts of Water Latent Heat on the Thermal Structure of Ultra-Cool Objects: Brown Dwarfs and Free-Floating Planets
• The puzzle of the formation of T8 dwarf Ross 458c
• The search for planetary mass companions to field brown dwarfs with HST/NICMOS
• Atmospheric Characterization via Broadband Color Filters on the PLAnetary Transits and Oscillations of stars (PLATO) Mission
• Constraints on the Space Density of Methane Dwarfs and the Substellar Mass Function from a Deep Near-Infrared Survey
• Warm Spitzer Occultation Photometry of WASP-26b at 3.6μm and 4.5μm
• Radiative Transfer for Exoplanet Atmospheres
• Polarimetric investigation of selected cloud compositions in exoplanetary atmospheres
• Cloudy mornings and clear evenings on a gas giant exoplanet
• The Emission Spectrum of the Hot Jupiter WASP-79b from HST/WFC3
• CROCODILE \\ Incorporating medium-resolution spectroscopy of close-in directly imaged exoplanets into atmospheric retrievals via cross-correlation
• Giant Planet Atmospheres and Spectra
• Optical constraints on the coldest metal-poor population
• Osiris revisited: Confirming a solar metallicity and low C/O in HD 209458b
• Dust Accretion onto Exoplanets
• The Classification of T Dwarfs
• Atmospheric composition and structure of HD209458b
• Experimental Investigation of the Photochemical Production of Hydrocarbons in Warm Gas Giant Exoplanet Atmospheres
• Thermal emission of WASP-48b in the Ks-band
• Exploring the Diversity of Jupiter-Class Planets (Discussion Meeting Contribution)
• Effect of Dust Size on the Near-Infrared Spectra (1.0-5.0 $\mu$m) of Brown Dwarf Atmospheres
• On the importance of laboratory experiments for interpreting exoplanet observations
• Sub-Neptunes as Soot Factories: Deep Atmosphere Hydrocarbon Formation and Quenching as the Origin of Sub-Neptune Aerosol Trends
• Dust in brown dwarfs and extra-solar planets VI. Assessing seed formation across the brown dwarf and exoplanet regimes
• Spectrum and atmosphere models of irradiated transiting extrasolar giant planets
• JWST high-contrast spectroscopy with speckle modelling: Atmospheric retrievals of the T dwarf companion HD 19467 B
• A Uniform Retrieval Analysis of Ultra-cool Dwarfs. IV. A Statistical Census from 50 Late-T Dwarfs
• TESS unveils the optical phase curve of KELT-1b. Thermal emission and ellipsoidal variation from the brown dwarf companion, and activity from the star
• Next-generation Exo-REM atmospheric models: application to VHS 1256 b to emulate patchy clouds
• Photochemistry and Spectral Characterization of Temperate and Gas-Rich Exoplanets
• The breaking of cold traps and onset of titanium in ultra-hot Jupiter atmospheres: WASP-189b in context
• New Ideas in the Theory of Extrasolar Giant Planets and Brown Dwarfs
• Panchromatic characterization of the Y0 brown dwarf WISEP J173835.52+273258.9 using JWST/MIRI
• Three-dimensional transport-induced chemistry on temperate sub-Neptune K2-18b, Part II: the combined effects of atmospheric dynamics and chemical reactions