no code implementations • 8 Oct 2020 • Christopher E. O'Connor, Bin Liu, Dong Lai
By requiring that perturbations from the companion stars be able to overcome short-range forces and excite the planet's eccentricity to $e \simeq 1$, we obtain an absolute limit of $a_{1} \gtrsim 8 \, {\rm AU} \, (a_{3} / 1500 \, {\rm AU})^{6/7}$ for the planet's semi-major axis just before migration (where $a_{3}$ is the semi-major axis of the 'outer' orbit).
Earth and Planetary Astrophysics Solar and Stellar Astrophysics
