Orbital Orientations of Exoplanets: Hat-p-4b is Prograde and Hat-p-14b is Retrograde

Orbital Orientations of Exoplanets: Hat-p-4b is Prograde and Hat-p-14b is Retrograde

We present observations of the Rossiter-McLaughlin effect for two exoplanetary systems, revealing the orientations of their orbits relative to the rotation axes of their parent stars. HAT-P-4b is prograde, with a sky-projected spin-orbit angle of λ = -4.9 ± 11.9 deg. In contrast, HAT-P-14b is retrog...

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Bibliographic Details
Main Authors: Winn, Joshua Nathan (Contributor), Howard, Andrew W. (Author), Johnson, John Asher (Author), Marcy, Geoffrey W. (Author), Isaacson, Howard (Author), Shporer, Avi (Author), Bakos, Gaspar A. (Author), Hartman, Joel D. (Author), Holman, Matthew J. (Author), Albrecht, Simon H. (Contributor), Crepp, Justin R. (Author), Morton, Timothy D. (Author)
Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), MIT Kavli Institute for Astrophysics and Space Research (Contributor)
Format: Article
Language:English
Published: IOP Publishing, 2012-08-10T19:15:53Z.
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