Asteroseismic inference on the spin-orbit misalignment and stellar parameters of HAT-P-7
Context. The measurement of obliquities-the angle between the orbital and stellar rotation-in star-planet systems is of great importance for understanding planet system formation and evolution. The bright and well-studied HAT-P-7 (Kepler-2) system is intriguing because several Rossiter-McLaughlin (RM) measurements found a high projected obliquity in this system, but it was not possible so far to determine whether the orbit is polar and/or retrograde. Aims. The goal of this study is to measure...[Show more]
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|Source:||Astronomy and Astrophysics|
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