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Paper detail

A Third Exoplanetary System with Misaligned Orbital and Stellar Spin Axes

We present evidence that the WASP-14 exoplanetary system has misaligned orbital and stellar-rotational axes, with an angle lambda = 33.1 +/- 7.4 deg between their sky projections. The evidence is based on spectroscopic observations of the Rossiter-McLaughlin effect as well as new photometric observations. WASP-14 is now the third system known to have a significant spin-orbit misalignment, and all three systems have "super-Jupiter" planets (M_P > 3 Mjup) and eccentric orbits. This finding suggests that the migration and subsequent orbital evolution of massive, eccentric exoplanets is somehow different from that of less massive close-in Jupiters, the majority of which have well-aligned orbits.

preprint2009arXivOpen access
John A. JohnsonJoshua N. WinnSimon AlbrechtAndrew W. HowardGeoffrey W. MarcyJ. Zachary Gazak
astro-ph.EPastro-ph.SR
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John A. JohnsonJoshua N. WinnSimon AlbrechtAndrew W. HowardGeoffrey W. MarcyJ. Zachary Gazak

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