THE WELL-ALIGNED ORBIT OF WASP-84b: EVIDENCE FOR DISK MIGRATION OF A HOT JUPITER

@article{Anderson2015THEWO,
  title={THE WELL-ALIGNED ORBIT OF WASP-84b: EVIDENCE FOR DISK MIGRATION OF A HOT JUPITER},
  author={D. Anderson and A. Triaud and O. Turner and D. Brown and B. J. Clark and B. Smalley and A. Cameron and A. Doyle and M. Gillon and C. Hellier and C. Lovis and P. Maxted and D. Pollacco and D. Queloz and A. Smith},
  journal={The Astrophysical Journal},
  year={2015},
  volume={800}
}
We report the sky-projected orbital obliquity (spin–orbit angle) of WASP-84 b, a 0.69MJup planet in an 8.52 day orbit around a G9V/K0V star, to be λ = �0.3 ± 1.7°. We obtain a true obliquity of ψ = 17.3 ± 7.7° from a measurement of the inclination of the stellar spin axis with respect to the sky plane. Due to the young age and the weak tidal forcing of the system, we suggest that the orbit of WASP-84b is unlikely to have both realigned and circularized from the misaligned and/or eccentric orbit… Expand

Figures and Tables from this paper

Three hot-Jupiters on the upper edge of the mass–radius distribution: WASP-177, WASP-181, and WASP-183

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