A Third Exoplanetary System with Misaligned Orbital and Stellar Spin Axes
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Author(s)
Johnson, John Asher
Winn, Joshua Nathan
Albrecht, Simon H.
Howard, Andrew W.
Marcy, Geoffrey W.
Gazak, J. Zachary
Date Issued
September 2009
Journal
Publications of the Astronomical Society of the Pacific
Publisher
University of Chicago Press
Citation
Johnson, John Asher et al. “A Third Exoplanetary System with Misaligned Orbital and Stellar Spin Axes1.” Publications of the Astronomical Society of the Pacific 121.884 (2009): 1104–1111. Web. DOI:10.1086/644604.
Version
Author's final manuscript
Abstract
We presented evidence that the WASP-14 exoplanetary system has misaligned orbital and stellar-rotational axes, with an angle of 33.1 plus or minus 7.4 degrees between their sky projections. At the time of this publication, WASP-14 was the third system known to have a significant spin-orbit misalignment, and all three systems had super- Jupiter planets and eccentric orbits. Therefore we hypothesized 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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
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