The Origin of Kepler-419b: A Path to Tidal Migration Via Four-body Secular Interactions

  • Jackson J
  • Dawson R
  • Zalesky J
7Citations
Citations of this article
7Readers
Mendeley users who have this article in their library.

Abstract

We test the high-eccentricity tidal migration scenario for Kepler-419b, a member of the eccentric warm Jupiter class of planets whose origin is debated. Kepler-419 hosts two known planets (b,c). However, in its current configuration, planet c cannot excite the eccentricity of planet b enough to undergo high-eccentricity tidal migration. We investigate whether the presence of an undiscovered fourth body could explain the orbit of Kepler-419b. We explore the parameter space of this potential third giant planet using a suite of N -body simulations with a range of initial conditions. From the results of these simulations, coupled with observational constraints, we can rule out this mechanism for much of the parameter space of the initial object d conditions. However, for a small range of parameters (masses between 0.5 and 7 m Jup , semimajor axes between 4 and 7.5 au, eccentricities between 0.18 and 0.35, and mutual inclinations near 0°) an undiscovered object d could periodically excite the eccentricity of Kepler-419b without destabilizing the system over 1 Gyr while producing currently undetectable radial velocity and transit timing variation signals.

Cite

CITATION STYLE

APA

Jackson, J. M., Dawson, R. I., & Zalesky, J. (2019). The Origin of Kepler-419b: A Path to Tidal Migration Via Four-body Secular Interactions. The Astronomical Journal, 157(4), 166. https://doi.org/10.3847/1538-3881/ab09eb

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free