WASP-47: A Hot Jupiter System with Two Additional Planets Discovered by K2

  title={WASP-47: A Hot Jupiter System with Two Additional Planets Discovered by K2},
  author={Juliette Becker and Andrew M. Vanderburg and Fred C. Adams and S. Rappaport and Hans Martin Schwengeler},
  journal={arXiv: Earth and Planetary Astrophysics},
Using new data from the K2 mission, we show that WASP-47, a previously known hot Jupiter host, also hosts two additional transiting planets: a Neptune-sized outer planet and a super-Earth inner companion. We measure planetary properties from the K2 light curve and detect transit timing variations, confirming the planetary nature of the outer planet. We performed a large number of numerical simulations to study the dynamical stability of the system and to find the theoretically expected transit… Expand

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