The Fate of Planets

Details The Fate of Planets The Fate of Planets

2011-01-10

arxiv.org/abs/1101.1773v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Invited review "Planetary Systems beyond the Main Sequence" conference Part of PlanetsbeyondMS/2010 proceedings http://arxiv

Scientific paper

As a star evolves off the Main Sequence, it endures major structural changes that are capable of determining the fate of the planets orbiting it. Throughout its evolution along the Red Giant Branch, the star increases its radius by two orders of magnitude. Later, during the Asymptotic Giant Branch, it loses most of its initial mass. Finally, during the Planetary Nebulae phase, it emits intense radiation before ultimately beginning its fade as a white dwarf. We show how the several competing processes (stellar mass-loss, gravitational and frictional drag, tidal forces, planet accretion and evaporation) affect the survival of planets around evolved stars.

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