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A High Stellar Obliquity in the WASP-7 Exoplanetary System
Simon Albrecht, Joshua N. Winn, R. Paul Butler +5
We measure a tilt of 86+-6 deg between the sky projections of the rotation axis of the WASP-7 star, and the orbital axis of its close-in giant planet. This measurement is based on…
Spin-Orbit Alignment for the Circumbinary Planet Host Kepler-16A
Joshua N. Winn, Simon Albrecht, John Asher Johnson +31
Kepler-16 is an eccentric low-mass eclipsing binary with a circumbinary transiting planet. Here we investigate the angular momentum of the primary star, based on Kepler photometry…
The long history of the Rossiter-McLaughlin effect and its recent applications
Simon Albrecht
In this paper I will review the Rossiter-McLaughlin (RM) effect; its history, how it manifests itself during stellar eclipses and planetary transits, and the increasingly important…
Improved Modeling of the Rossiter-McLaughlin Effect for Transiting Exoplanets
Teruyuki Hirano, Yasushi Suto, Joshua N. Winn +4
We present an improved formula for the anomalous radial velocity of the star during planetary transits due to the Rossiter-McLaughlin (RM) effect. The improvement comes from a more…
Two Upper Limits on the Rossiter-McLaughlin Effect, with Differing Implications: WASP-1 has a High Obliquity and WASP-2 is Indeterminate
Simon Albrecht, Joshua N. Winn, John Asher Johnson +9
We present precise radial-velocity measurements of WASP-1 and WASP-2 throughout transits of their giant planets. Our goal was to detect the Rossiter-McLaughlin (RM) effect, the ano…