Speaker
Viktória Fröhlich
(HUN-REN Konkoly Observatory, Eötvös Loránd University)
Description
The role of massive stellar death in the production of free-floating planets remains poorly explored. We model type II supernovae as a rogue planet formation channel through 2.5 million simulations of planetary and stellar companions exposed to homologous mass loss with typical SN II ejecta velocities of 1000–10,000 km/s. Nearly all companions are destabilized, yielding rogue planets with velocities of 1–275 km/s (peak ≈18 km/s), largely independent of mass. Survival for pulsar planets requires eccentric primordial orbits combined with a near-apocenter timing of the explosion. Type II supernovae thus can represent an efficient, previously underappreciated pathway for rogue planet formation.
Primary author
Dr
Zsolt Regály
(HUN-REN Konkoly Observatory)
Co-authors
Dr
József Vinkó
(HUN-REN Konkoly Observatory, University of Szeged)
Viktória Fröhlich
(HUN-REN Konkoly Observatory, Eötvös Loránd University)
