Identification of Absorption Features in an Extrasolar Planet Atmosphere

Abstract

Water absorption is identified in the atmosphere of HD209458b by comparing models for the planet's transmitted spectrum to recent, multi-wavelength, eclipse-depth measurements (from 0.3 to 1 microns) published by Knutson et al. (2007). A cloud-free model which includes solar abundances, rainout of condensates, and photoionization of sodium and potassium is in good agreement with the entire set of eclipse-depth measurements from the ultraviolet to near-infrared. Constraints are placed on condensate removal by gravitational settling, the bulk metallicity, and the redistribution of absorbed stellar flux. Comparisons are also made to the Charbonneau et al. (2002) sodium measurements.

Accepted for publication in ApJL., in emulate ApJ format

References in corpus (6)

• Detection of Thermal Emission from an Extrasolar Planet
• Using Stellar Limb-Darkening to Refine the Properties of HD 209458b
• The phase-dependent Infrared brightness of the extrasolar planet upsilon Andromedae b
• Strong Infrared Emission from the Extrasolar Planet HD189733b
• A Spectrum of an Extrasolar Planet
• The Influence of Atmospheric Dynamics on the Infrared Spectra and Light Curves of Hot Jupiters

Cited by in corpus (102)

• Models of Stars, Brown Dwarfs and Exoplanets
• A Unified Theory for the Atmospheres of the Hot and Very Hot Jupiters: Two Classes of Irradiated Atmospheres
• Atmospheric circulation of hot Jupiters: Coupled radiative-dynamical general circulation model simulations of HD 189733b and HD 209458b
• A Temperature and Abundance Retrieval Method for Exoplanet Atmospheres
• Infrared Transmission Spectroscopy of the Exoplanets HD209458b and XO-1b Using the Wide Field Camera-3 on the Hubble Space Telescope
• Detection of atmospheric haze on an extrasolar planet: The 0.55 - 1.05 micron transmission spectrum of HD189733b with the Hubble Space Telescope
• C/O ratio as a Dimension for Characterizing Exoplanetary Atmospheres
• Sodium Absorption From the Exoplanetary Atmosphere of HD189733b Detected in the Optical Transmission Spectrum
• Exoplanet Atmospheres
• Design Considerations for a Ground-based Transit Search for Habitable Planets Orbiting M dwarfs
• Exoplanetary Atmospheres: Key Insights, Challenges and Prospects
• Water Vapor in the Spectrum of the Extrasolar Planet HD 189733b: 1. the Transit
• Transmission Spectra of Three-Dimensional Hot Jupiter Model Atmospheres
• The Broadband Infrared Emission Spectrum of the Exoplanet HD 189733b
• 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
• HD 209458b in New Light: Evidence of Nitrogen Chemistry, Patchy Clouds and Sub-Solar Water
• Theoretical Spectral Models of the Planet HD 209458b with a Thermal Inversion and Water Emission Bands
• A chemical model for the atmosphere of hot Jupiters
• Extremely Irradiated Hot Jupiters: Non-Oxide Inversions, H- Opacity, and Thermal Dissociation of Molecules
• Rotation and winds of exoplanet HD 189733 b measured with high-dispersion transmission spectroscopy
• Atmospheric Circulation of Hot Jupiters: Three-dimensional circulation models of HD 209458b and HD 189733b with Simplified Forcing
• Exoplanetary Atmospheres - Chemistry, Formation Conditions, and Habitability
• HST hot Jupiter Transmission Spectral Survey: A detection of Na and strong optical absorption in HAT-P-1b
• The physical properties of extrasolar planets
• An HST Optical to Near-IR Transmission Spectrum of the Hot Jupiter WASP-19b: Detection of Atmospheric Water and Likely Absence of TiO
• Atmospheric Circulation of Hot Jupiters: A Shallow Three-Dimensional Model
• Accurate Spitzer infrared radius measurement for the hot Neptune GJ 436b
• H2O abundances in the atmospheres of three hot Jupiters
• On the Absorption and Redistribution of Energy in Irradiated Planets
• TiO and VO broad band absorption features in the optical spectrum of the atmosphere of the hot-Jupiter HD209458b
• High Metallicity and Non-equilibrium Chemistry in the Dayside Atmosphere of hot-Neptune GJ 436b
• Magnesium in the atmosphere of the planet HD209458b: Observations of the thermosphere-exosphere transition region
• A new approach to analysing HST spatial scans: the transmission spectrum of HD 209458 b
• Atmospheres from very low-mass stars to extrasolar planets
• A Detection Of H-alpha In An Exoplanetary Exosphere
• Chemical Kinetics on Extrasolar Planets
• Determining atmospheric conditions at the terminator of the hot-Jupiter HD209458b
• Rayleigh scattering by H2 in the extrasolar planet HD209458b
• On detecting biospheres from chemical thermodynamic disequilibrium in planetary atmospheres
• Thermal Emission of Exoplanet XO-1b
• Titan solar occultation observations reveal transit spectra of a hazy world
• On the Presence of Water and Global Circulation in the Transiting Planet HD 189733b
• High Resolution, Differential, Near-infrared Transmission Spectroscopy of GJ 1214b
• Water in HD 209458b's atmosphere from 3.6 - 8 microns IRAC photometric observations in primary transit
• Five key exoplanet questions answered via the analysis of 25 hot Jupiter atmospheres in eclipse
• From planetesimals to planets: volatile molecules
• Transmission Spectra of Transiting Planet Atmospheres: Model Validation and Simulations of the Hot Neptune GJ 436b for JWST
• A Spitzer Search for Water in the Transiting Exoplanet HD189733b
• A Survey of Alkali Line Absorption in Exoplanetary Atmospheres
• Transmission spectroscopy of the sodium 'D' doublet in WASP-17b with the VLT
• Analysis of Spitzer Spectra of Irradiated Planets: Evidence for Water Vapor?
• Warm Ice Giant GJ 3470b. I. A Flat Transmission Spectrum Indicates a Hazy, Low-methane, and/or Metal-rich Atmosphere
• Atmospheric Characterization of 5 Hot Jupiters with Wide Field Camera 3 on the Hubble Space Telescope
• The Earth as an extrasolar transiting planet: Earth's atmospheric composition and thickness revealed by Lunar eclipse observations
• Atmospheric Retrieval of Exoplanets
• FORS2 observes a multi-epoch transmission spectrum of the hot Saturn-mass exoplanet WASP-49b
• Optical-to-Near-Infrared Simultaneous Observations for the Hot Uranus GJ3470b: A Hint for Cloud-free Atmosphere
• The origin of the excess transit absorption in the HD 189733 system: planet or star?
• Transient Sulfate Aerosols as a Signature of Exoplanet Volcanism
• A Hubble Space Telescope transit light curve for GJ436b
• Non-Detection of Polarized, Scattered Light from the HD 189733b Hot Jupiter
• Physical properties and radius variations in the HAT-P-5 planetary system from simultaneous four-colour photometry
• Multi-band, Multi-epoch Observations of the Transiting Warm Jupiter WASP-80b
• The Impact of Circumplantary Jets on Transit Spectra and Timing Offsets for Hot-Jupiters
• Outstanding Challenges of Exoplanet Atmospheric Retrievals
• The Dawes Review 3: The Atmospheres of Extrasolar Planets and Brown Dwarfs
• A Search for molecules in the atmosphere of HD 189733b
• Probing potassium in the atmosphere of HD 80606b with tunable filter transit spectrophotometry from the Gran Telescopio Canarias
• UV Exoplanet Transmission Spectral Features as Probes of Metals and Rainout
• CRIRES+ and ESPRESSO reveal an atmosphere enriched in volatiles relative to refractories on the ultra-hot Jupiter WASP-121b
• Discriminating Between Cloudy, Hazy and Clearsky Exoplanets Using Refraction
• On Signatures of Atmospheric Features in Thermal Phase Curves of Hot Jupiters
• The EChO science case
• Precision Near Infrared Photometry For Exoplanet Transit Observations - I : Ensemble Spot Photometry for An All-Sky Survey
• Near-IR transmission spectrum of HAT-P-32 b using HST/WFC3
• The potassium absorption on HD189733b and HD209458b
• Physical properties of the WASP-44 planetary system from simultaneous multi-colour photometry
• Ground-Based Transmission Spectroscopy with FORS2: A featureless optical transmission spectrum and detection of H${}_2$O for the ultra-hot Jupiter WASP-103b
• Photometric Follow-up Observations of the Transiting Neptune-Mass Planet GJ 436b
• A better characterization of the chemical composition of exoplanets atmospheres with ARIEL
• Investigating the detectability of hydrocarbons in exoplanet atmospheres with JWST
• On the possibility of detecting extrasolar planets' atmospheres with the Rossiter-McLaughlin-effect
• On constraining a transiting exoplanet's rotation rate with its transit spectrum
• LRG-BEASTS: Ground-based Detection of Sodium and a Steep Optical Slope in the Atmosphere of the Highly Inflated Hot-Saturn WASP-21b
• A large range of haziness conditions in hot-Jupiter atmospheres
• Chemical modeling of exoplanet atmospheres
• HD 179949b: A Close Orbiting Extrasolar Giant Planet with a stratosphere?
• Non-Local Thermodynamic Equilibrium Transmission Spectrum Modelling of HD209458b
• Detection and Characterization of Extrasolar Planets through Doppler Spectroscopy
• Searching for NLTE effects in the high-resolution transmission spectrum of WASP-121 b with Cloudy for Exoplanets
• Knobs and dials of retrieving JWST transmission spectra. I. The importance of p-T profile complexity
• Probing the atmosphere of HD189733b with the Na I and K I lines
• A SEA BASS on the exoplanet HD209458b
• CaRM: Exploring the chromatic Rossiter-McLaughlin effect. The cases of HD 189733b and WASP-127b
• The Emission Spectrum of the Hot Jupiter WASP-79b from HST/WFC3
• A dayside thermal inversion in the atmosphere of WASP-19b
• The effect of spectroscopic binning on atmospheric retrievals
• A Detailed Investigation of HD 209458 b HST & JWST Transmission Spectra with SANSAR
• Atmospheric composition and structure of HD209458b
• Galactic planetary science
• Discovering and Characterizing the Planetary Systems of Nearby Stars: The scientific need for medium aperture space coronagraph observations