• DOI:10.1088/0004-637X/772/2/80
Corpus ID: 7836597

The Stellar Obliquity and the Long-period Planet in the HAT-P-17 Exoplanetary System

@article{Fulton2013TheSO,
  title={The Stellar Obliquity and the Long-period Planet in the HAT-P-17 Exoplanetary System},
  author={B. Fulton and A. Howard and J. Winn and S. Albrecht and G. Marcy and J. Crepp and G. Bakos and J. Johnson and J. Hartman and H. Isaacson and H. Knutson and M. Zhao},
  journal={The Astrophysical Journal},
  year={2013},
  volume={772},
  pages={80}
}

B. Fulton, A. Howard, +9 authors M. Zhao

Published 2013

Physics

The Astrophysical Journal

We present the measured projected obliquity – the sky-projected angle between the stellar spin axis and orbital angular momentum – of the inner planet of the HAT-P-17 multi-planet system. We measure the sky-projected obliquity of the star to be � = 19 +1416 degrees by modeling the RossiterMcLaughlin (RM) effect in Keck/HIRES radial velocities (RVs). The anomalous RV time series shows an asymmetry relative to the midtransit time, ordinarily suggesting a nonzero obliquity – but in this case at… CONTINUE READING

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