Improved Measurement of the Rossiter-McLaughlin Effect in the Exoplanetary System HD 17156

Abstract

We present an improved measurement of the Rossiter-McLaughlin effect for the exoplanetary system HD 17156, based on radial-velocity data gathered with the Subaru 8.2m telescope throughout the planetary transit of UT 2008 November 7. The data allow for a precise and independent determination of the projected spin-orbit angle of this system: $\lambda =10.0^{\circ }\pm 5.1^{\circ }$. This result supersedes the previous claim of $\lambda =62^{\circ }\pm 25^{\circ }$ by Narita et al., which was based on lower-precision data with poor statistics. Thus the stellar spin and planetary orbital axes of the HD 17156 system are likely to be well-aligned, despite the planet's large orbital eccentricity suggesting a history of strong dynamical interactions.

16 pages, 3 figures, 3 tables, PASJ accepted

References in corpus (16)

• Dynamical Outcomes of Planet-Planet Scattering
• The effect of red noise on planetary transit detection
• Formation of Hot Planets by a combination of planet scattering, tidal circularization, and Kozai mechanism
• Prospects for the Characterization and Confirmation of Transiting Exoplanets via the Rossiter-McLaughlin Effect
• On the tidal evolution of Hot Jupiters on inclined orbits
• The Transit Light Curve (TLC) Project. I. Four Consecutive Transits of the Exoplanet XO-1b
• Misaligned spin-orbit in the XO-3 planetary system?
• Hot Jupiters in binary star systems
• Photometric and spectroscopic detection of the primary transit of the 111-day-period planet HD 80606 b
• On the Spin-Orbit Misalignment of the XO-3 Exoplanetary System
• Five Intermediate-Period Planets from the N2K Sample
• HD 17156b: A Transiting Planet with a 21.2 Day Period and an Eccentric Orbit
• Spin-Orbit Alignment for the Eccentric Exoplanet HD 147506b
• The Transit Light Curve (TLC) Project. II. Two Transits of the Exoplanet OGLE-TR-111b
• Refined parameters and spectroscopic transit of the super-massive planet HD147506b
• The Spin-Orbit Alignment of the HD17156 Transiting Eccentric Planetary System

Cited by in corpus (37)

• Hot Stars with Hot Jupiters Have High Obliquities
• Obliquities of Hot Jupiter host stars: Evidence for tidal interactions and primordial misalignments
• Homogeneous studies of transiting extrasolar planets. IV. Thirty systems with space-based light curves
• Evidence of Possible Spin-Orbit Misalignment Along the Line of Sight in Transiting Exoplanet Systems
• Tidal Evolution of Close-in Planets
• Hot Jupiters from Coplanar High-eccentricity Migration
• Stellar obliquities in exoplanetary systems
• Improved Modeling of the Rossiter-McLaughlin Effect for Transiting Exoplanets
• Formation and Stellar Spin-Orbit Misalignment of Hot Jupiters from Lidov-Kozai Oscillations in Stellar Binaries
• First Evidence of a Retrograde Orbit of Transiting Exoplanet HAT-P-7b
• Calibration of Equilibrium Tide Theory for Extrasolar Planet Systems II
• Observation of the full 12-hour-long transit of the exoplanet HD80606b. Warm-Spitzer photometry and SOPHIE spectroscopy
• Discovery and Rossiter-McLaughlin Effect of Exoplanet Kepler-8b
• Determination of Three-dimensional Spin-orbit Angle with Joint Analysis of Asteroseismology, Transit Lightcurve, and the Rossiter-McLaughlin Effect: Cases of HAT-P-7 and Kepler-25
• A Possible Tilted Orbit of the Super-Neptune HAT-P-11b
• Analytic Description of the Rossiter-McLaughlin Effect for Transiting Exoplanets: Cross-Correlation Method and Comparison with Simulated Data
• HATS-1b: The First Transiting Planet Discovered by the HATSouth Survey
• Determining Eccentricities of Transiting Planets: A Divide in the Mass-Period Plane
• Asteroseismology of the Transiting Exoplanet Host HD 17156 with HST FGS
• Coordinated X-ray and Optical observations of Star-Planet Interaction in HD 17156
• Discrepancies between isochrone fitting and gyrochronology for exoplanet host stars?
• The spin-orbit angles of the transiting exoplanets WASP-1b, WASP-24b, WASP-38b and HAT-P-8b from Rossiter-McLaughlin observations
• The Time Dependence of hot Jupiters' Orbital Inclinations
• HAT-P-15b: A 10.9-day Extrasolar Planet Transiting a Solar-type Star
• Precise Estimates of the Physical Parameters for the Exoplanet System HD-17156 Enabled by HST FGS Transit and Asteroseismic Observations
• DREAM II. The spin-orbit angle distribution of close-in exoplanets under the lens of tides
• The Rossiter-McLaughlin Effect of the Transiting Exoplanet XO-4b
• The Aligned Orbit of the Eccentric Warm Jupiter K2-232b
• Further Observations of the Tilted Planet XO-3: A New Determination of Spin-Orbit Misalignment, and Limits on Differential Rotation
• Spin-Orbit Alignment of the TrES-4 Transiting Planetary System and Possible Additional Radial Velocity Variation
• Estimating the masses of extra-solar planets
• Spin-orbit alignments for Three Transiting Hot Jupiters: WASP-103b, WASP-87b, & WASP-66b
• The well-aligned orbit of WASP-84b: evidence for disc migration
• Confirmation and characterisation of three giant planets detected by TESS from the FIES/NOT and Tull/McDonald spectrographs
• The DEdicated MONitor of EXotransits (DEMONEX): Seven Transits of XO-4b
• Searching for Trojan Asteroids in the HD 209458 System: Space-based MOST Photometry and Dynamical Modeling
• Revised Properties and Dynamical History for the HD 17156 System