The Rossiter-McLaughlin effect of CoRoT-3b and HD 189733b

2009/07/15 by Amaury H. M. J. Triaud, A. H. M. J. Triaud, Didier Queloz +29 · 10 citations
Mathematics · Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Exoplanet #Mathematics #Monte Carlo method #Orbit (dynamics) #Physics #Planetary system #Radial velocity #Solar and Space Plasma Dynamics #Stars #Statistics #Stellar, planetary, and galactic studies #astro-ph.EP

paper · pdf · doi:10.1051/0004-6361/200911897

7 pages, 4 figures, accepted in A&A for publication

openalex publication_date 2009/07/15 · arxiv created 2009/07/17 · arxiv updated 2015/05/13 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05

Abstract

We present radial-velocity sequences acquired during three transits of the exoplanet HD 189733b and one transit of CoRoT-3b. We applied a combined Markov-chain Monte-Carlo analysis of spectroscopic and photometric data on these stars, to determine a full set of system parameters including the projected spin-orbit misalignment angle of HD 189733b to an unprecedented precision via the Rossiter-McLaughlin effect: . This small but non-zero inclination of the planetary orbit is important to understand the origin of the system. On CoRoT-3b, results seem to point towards a non-zero inclination as well with , but this remains marginal. Systematic effects due to non-Gaussian cross-correlation functions appear to be the main cause of significant residuals that prevent an accurate determination of the projected stellar rotation velocity for both stars.

Citations

• High resolution spectroscopy for Cepheids distancedetermination
• A Jupiter-mass companion to a solar-type star
• The Rossiter‐McLaughlin Effect and Analytic Radial Velocity Curves for Transiting Extrasolar Planetary Systems
• Measurement of the Spin-Orbit Alignment in the Exoplanetary System HD 189733
• Photometric and spectroscopic detection of the primarytransit of the 111-day-period planet HD 80 606 b
• Improved parameters for the transiting planet HD 17156b: a high-density giant planet with a very eccentric orbit
• Structure and evolution of super-Earth to super-Jupiter exoplanets
• The HARPS search for southern extra-solar planets. XIII. A planetary system with 3 Super-Earths (4.2, 6.9, & 9.2 Earth masses)

Cited by

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• SPATIALLY RESOLVED EASTWARD WINDS AND ROTATION OF HD 189733b
• An Eccentric Brown Dwarf Eclipsing an M dwarf
• The center-to-limb variation across the Fraunhofer lines of HD 189733
• The spin-orbit alignment of the transiting exoplanet WASP-3b from Rossiter-McLaughlin observations
• SPIN–ORBIT ALIGNMENT FOR THREE TRANSITING HOT JUPITERS: WASP-103b, WASP-87b, and WASP-66b†
• Applications of a Gaussian Process Framework for Modelling of High-Resolution Exoplanet Spectra
• The Implications of 3D Thermal Structure on 1D Atmospheric Retrieval
• THE CLIMATE OF HD 189733b FROM FOURTEEN TRANSITS AND ECLIPSES MEASURED BYSPITZER
• Hot Jupiters and the evolution of stellar angular momentum