The Transit Light Curve Project. VII. The Not-So-Bloated Exoplanet HAT-P-1b

Abstract

We present photometry of the G0 star HAT-P-1 during six transits of its close-in giant planet, and we refine the estimates of the system parameters. Relative to Jupiter's properties, HAT-P-1b is 1.20 +/- 0.05 times larger and its surface gravity is 2.7 +/- 0.2 times weaker. Although it remains the case that HAT-P-1b is among the least dense of the known sample of transiting exoplanets, its properties are in accord with previously published models of strongly irradiated, coreless, solar-composition giant planets. The times of the transits have a typical accuracy of 1 min and do not depart significantly from a constant period.

To appear in AJ [19pg, 3 figures]. New co-author added. Minor revisions to match published version

References in corpus (18)

• Improving Stellar and Planetary Parameters of Transiting Planet Systems: The Case of TrES-2
• WASP-1b and WASP-2b: Two new transiting exoplanets detected with SuperWASP and SOPHIE
• HAT-P-1b: A Large-Radius, Low-Density Exoplanet Transiting one Member of a Stellar Binary
• Using Stellar Limb-Darkening to Refine the Properties of HD 209458b
• The Transit Light Curve (TLC) Project. I. Four Consecutive Transits of the Exoplanet XO-1b
• A Spectrum of an Extrasolar Planet
• Heat transport in giant (exo)planets: a new perspective
• The Transit Light Curve Project. V. System Parameters and Stellar Rotation Period of HD 189733
• XO-2b: Transiting Hot Jupiter in a Metal-rich Common Proper Motion Binary
• A method for the direct determination of the surface gravities of transiting extrasolar planets
• High accuracy transit photometry of the planet OGLE-TR-113b with a new deconvolution-based method
• Tidal dissipation within hot Jupiters: a new appraisal
• The Transit Light Curve (TLC) Project. II. Two Transits of the Exoplanet OGLE-TR-111b
• The AGN and Gas Disk in the Low Surface Brightness Galaxy PGC045080
• The Transit Light Curve Project. VI. Three Transits of the Exoplanet TrES-2
• Direct Measurement of the Radius and Density of the Transiting Exoplanet HD 189733B with the CHARA Array
• The `666' collaboration on OGLE transits: I. Accurate radius of the planets OGLE-TR-10b and OGLE-TR-56b with VLT deconvolution photometry
• Photometric follow-up of the transiting planet WASP-1b

Cited by in corpus (33)

• Improved parameters for extrasolar transiting planets
• Homogeneous studies of transiting extrasolar planets. I. Light curve analyses
• The Transit Light Curve Project. IX. Evidence for a Smaller Radius of the Exoplanet XO-3b
• 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
• Transit timing effects due to an exomoon
• Multi-Wavelength Constraints on the Day-Night Circulation Patterns of HD 189733b
• Homogeneous studies of transiting extrasolar planets. II. Physical properties
• On Correlated-noise Analyses Applied To Exoplanet Light Curves
• Inflating and Deflating Hot Jupiters: Coupled Tidal and Thermal Evolution of Known Transiting Planets
• Properties of analytic transit light curve models
• A Smaller Radius for the Transiting Exoplanet WASP-10b
• TESS Transit Timing of Hundreds of Hot Jupiters
• Coupled Evolution with Tides of the Radius and Orbit of Transiting Giant Planets: General Results
• Measurement of the Spin-Orbit Angle of Exoplanet HAT-P-1b
• ExoClock Project III: 450 new exoplanet ephemerides from ground and space observations
• K2 and Spitzer phase curves of the rocky ultra-short-period planet K2-141 b hint at a tenuous rock vapor atmosphere
• ExoClock project II: A large-scale integrated study with 180 updated exoplanet ephemerides
• The Transit Light Curve Project. VIII. Six Occultations of the Exoplanet TrES-3
• Spi-OPS: Spitzer and CHEOPS confirm the near-polar orbit of MASCARA-1 b and reveal a hint of dayside reflection
• Theoretical Radii of Extrasolar Giant Planets: the Cases of TrES-4, XO-3b, and HAT-P-1b
• Using Stellar Densities to Evaluate Transiting Exoplanetary Candidates
• Homogeneous search for helium in the atmosphere of 11 gas giant exoplanets with SPIRou
• Physical properties of the WASP-44 planetary system from simultaneous multi-colour photometry
• Physical properties of the HAT-P-23 and WASP-48 planetary systems from multi-colour photometry
• TASTE V. A new ground-based investigation of orbital decay in the ultra-hot Jupiter WASP-12b
• Detection of Na and K in the atmosphere of the hot Jupiter HAT-P-1b with P200/DBSP
• Looking For Timing Variations in the Transits of 16 Exoplanets
• Scintillation-limited photometry with the 20-cm NGTS telescopes at Paranal Observatory
• Measuring accurate transit parameters
• Precise Photometry and Spectroscopy of Transits
• UV Absorption by Silicate Cloud Precursors in Ultra-hot Jupiter WASP-178b
• Precision Time-series Photometry in the Thermal Infrared with a 'Wall-Eyed' Pointing Mode at the Large Binocular Telescope