Extended Data Fig. 8: Simulation of a stellar binary history for 8 UMi leading up to a stellar merger.
From: A close-in giant planet escapes engulfment by its star
This fiducial model is simulated using β = 0.6, q = 0.7, and Pinit = 2 d, with the stellar merger occuring at the onset of unstable mass transfer at t ≈ 8.6 Gyr. (a) Binary separation (purple solid line) and orbital period (green dashed line) versus time for the simulated binary model. (b) Primary total and core masses versus time. (c) Secondary total/core mass versus time.
