Constraints on TESS albedos for five hot Jupiters

Abstract

Photometric observations of occultations of transiting exoplanets can place important constraints on the thermal emission and albedos of their atmospheres. We analyse photometric measurements and derive geometric albedo ($A_{\mathrm{g}}$) constraints for five hot Jupiters observed with TESS in the optical: WASP-18 b, WASP-36 b, WASP-43 b, WASP-50 b and WASP-51 b. For WASP-43 b, our results are complemented by a VLT/HAWK-I observation in the near-infrared at $2.09\mu$m. We derive the first geometric albedo constraints for WASP-50 b and WASP-51 b: $A_{\mathrm{g}}<0.445$ and $A_{\mathrm{g}}<0.368$, respectively. We find that WASP-43 b and WASP-18 b are both consistent with low geometric albedos ($A_{\mathrm{g}}<0.16$) even though they lie at opposite ends of the hot Jupiter temperature range with equilibrium temperatures of $\sim 1400$ K and $\sim 2500$ K, respectively. We report self-consistent atmospheric models which explain broadband observations for both planets from TESS, \HST, \Spitzer and VLT/HAWK-I. We find that the data of both hot Jupiters can be explained by thermal emission alone and inefficient day-night energy redistribution. The data do not require optical scattering from clouds/hazes, consistent with the low geometric albedos observed.

arXiv comment21 pages, 7 figures

References in corpus (81)

• The Transiting Exoplanet Survey Satellite
• A new extensive library of PHOENIX stellar atmospheres and synthetic spectra
• The WASP Project and the SuperWASP Cameras
• Kepler Presearch Data Conditioning II - A Bayesian Approach to Systematic Error Correction
• Kepler Presearch Data Conditioning I - Architecture and Algorithms for Error Correction in Kepler Light Curves
• KEPLER's First Rocky Planet: Kepler-10b
• Chemical Equilibrium Abundances in Brown Dwarf and Extrasolar Giant Planet Atmospheres
• ExoMol line lists IV: The rotation-vibration spectrum of methane up to 1500 K
• A Precise Water Abundance Measurement for the Hot Jupiter WASP-43b
• The Statistics of Albedo and Heat Recirculation on Hot Exoplanets
• A variationally computed line list for hot NH3
• Thermal structure of an exoplanet atmosphere from phase-resolved emission spectroscopy
• Exoplanetary Atmospheres: Key Insights, Challenges and Prospects
• From thermal dissociation to condensation in the atmospheres of ultra hot Jupiters: WASP-121b in context
• ExoMol line lists III: An improved hot rotation-vibration line list for HCN and HNC
• Transitions in the cloud composition of hot Jupiters
• H- Opacity and Water Dissociation in the Dayside Atmosphere of the Very Hot Gas Giant WASP-18 b
• A Gaussian process framework for modelling instrumental systematics: application to transmission spectroscopy
• Theoretical Spectra and Light Curves of Close-in Extrasolar Giant Planets and Comparison with Data
• Inference of Inhomogeneous Clouds in an Exoplanet Atmosphere
• ExoMol Molecular linelists -- XXXIII. The spectrum of Titanium Oxide
• Extremely Irradiated Hot Jupiters: Non-Oxide Inversions, H- Opacity, and Thermal Dissociation of Molecules
• Improved HCN/HNC linelist, model atmospheres and synthetic spectra for WZ Cas
• LDTk: Limb Darkening Toolkit
• ExoMol line lists XVIII. The high temperature spectrum of VO
• Quantitatively Assessing the Role of Clouds in the Transmission Spectrum of GJ 1214b
• The TRAPPIST survey of southern transiting planets. I. Thirty eclipses of the ultra-short period planet WASP-43 b
• Changing Phases of Alien Worlds: Probing Atmospheres of Kepler Planets with High-Precision Photometry
• Calculations of the Far-Wing Line Profiles of Sodium and Potassium in the Atmospheres of Substellar-Mass Objects
• The Deep Blue Color of HD189733b: Albedo Measurements with Hubble Space Telescope/Space Telescope Imaging Spectrograph at Visible Wavelengths
• Spitzer Phase Curve Constraints for WASP-43b at 3.6 and 4.5 microns
• WASP-43b: The closest-orbiting hot Jupiter
• Understanding Trends Associated with Clouds in Irradiated Exoplanets
• The high albedo of the hot Jupiter Kepler-7b
• A comprehensive study of Kepler phase curves and secondary eclipses -- temperatures and albedos of confirmed Kepler giant planets
• Spitzer 3.6 micron and 4.5 micron full-orbit lightcurves of WASP-18
• A Gemini ground-based transmission spectrum of WASP-29b: a featureless spectrum from 515 to 720nm
• The thermal emission of the young and massive planet CoRoT-2b at 4.5 and 8 microns
• GENESIS: New Self-Consistent Models of Exoplanetary Spectra
• Spitzer observations of the thermal emission from WASP-43b
• Climate of an Ultra hot Jupiter: Spectroscopic phase curve of WASP-18b with HST/WFC3
• Vibrational transition moments of CH${}_4$ from first principles
• Polluted White Dwarfs: Constraints on the Origin and Geology of Exoplanetary Material
• The optical transmission spectrum of the hot Jupiter HAT-P-32b: clouds explain the absence of broad spectral features?
• Physical properties of the 0.94-day period transiting planetary system WASP-18
• TESS full orbital phase curve of the WASP-18b system
• Optical Albedo Theory of Strongly-Irradiated Giant Planets: The Case of HD 209458b
• Studying atmosphere-dominated hot Jupiter Kepler phase curves: Evidence that inhomogeneous atmospheric reflection is common
• Evidence for a Dayside Thermal Inversion and High Metallicity for the Hot Jupiter WASP-18b
• Chemistry in an Evolving Protoplanetary Disk: Effects on Terrestrial Planet Composition
• New Avenues for Thermal Inversions in hot Jupiters
• WASP-35b, WASP-48b and WASP-51b: Two new planets and an independent discovery of HAT-P-30b
• Ground-based detection of thermal emission from the exoplanet WASP-19b
• Reliable inference of exoplanet light curve parameters using deterministic and stochastic systematics models
• Optical phase curve of the ultra-hot Jupiter WASP-121b
• Detection of visible light from the darkest world
• HAT-P-30b: A transiting hot Jupiter on a highly oblique orbit
• Exploring the atmospheric dynamics of the extreme ultra-hot Jupiter KELT-9b using TESS photometry
• A transition between the hot and the ultra-hot Jupiter atmospheres
• Systematic Phase Curve Study of Known Transiting Systems from Year 1 of the TESS Mission
• The Very Low Albedo of WASP-12b From Spectral Eclipse Observations with $\text{Hubble}$
• H-band thermal emission from the 19-hour period planet WASP-19b
• Broad-band transmission spectrum and K-band thermal emission of WASP-43b as observed from the ground
• Secondary eclipse observations for seven hot-Jupiters from the Anglo-Australian Telescope
• Precise photometric transit follow-up observations of five close-in exoplanets : update on their physical properties
• CHEOPS geometric albedo of the hot Jupiter HD 209458b
• Revisiting the Energy Budget of WASP-43b: Enhanced day-night heat transport
• WASP-50b: a hot Jupiter transiting a moderately active solar-type star
• Ruling out the orbital decay of the WASP-43b
• WASP-36b: A new transiting planet around a metal-poor G-dwarf, and an investigation into analyses based on a single transit light curve
• Low albedos of hot to ultra-hot Jupiters in the optical to near-infrared transition regime
• Closed-formed ab initio solutions of geometric albedos and reflected light phase curves of exoplanets
• The stellar obliquity, planet mass, and very low albedo of Qatar-2 from K2 Photometry
• Assessing Spectra and Thermal Inversions due to TiO in Hot Jupiter Atmospheres
• Discovery of the secondary eclipse of HAT-P-11 b
• An extremely high photometric precision in ground-based observations of two transits in the WASP-50 planetary system
• H- and Dissociation in Ultra-hot Jupiters: A Retrieval Case Study of WASP-18b
• Spatially Resolved Modeling of Optical Albedos for a Sample of Six Hot Jupiters
• The TESS Phase Curve of KELT-1b Suggests a High Dayside Albedo
• The Dark World: A Tale of WASP-43b in Reflected Light with HST WFC3/UVIS
• Multi-band transit follow up observations of five hot-Jupiters with critical noise treatments: Improved physical properties

Cited by in corpus (9)

• A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b
• The phase curve and the geometric albedo of WASP-43b measured with CHEOPS, TESS and HST WFC3/UVIS
• BOWIE-ALIGN: A JWST comparative survey of aligned vs misaligned hot Jupiters to test the dependence of atmospheric composition on migration history
• Characterizing WASP-43b's interior structure: unveiling tidal decay and apsidal motion
• Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties
• Dark skies of the slightly eccentric WASP-18 b from its optical-to-infrared dayside emission
• SILVIA: Ultra-precision formation flying demonstration for space-based interferometry
• The Similar Seven: A set of very-alike exoplanets to test correlations between system parameters and atmospheric properties
• The dark days are overcast: Iron-bearing clouds on HD 209458 b and WASP-43 b can explain low dayside albedos