The ultimate fate of planetary systems

VAUCLAIR, S.; VAUCLAIR, G.; F. C. WACHLIN

Viena

Congreso; The Astrophysics of Planitary Habitability; 2016

What happens to the planetary systems at the end of the existence of their host-stars? More and more information and constraints are obtained from the study of white dwarfs, which show evidences of debris disks from infrared observations. Some ofthese white dwarfs present lines of heavy elements in their spectra, which are the signature of undergoing accretion of planetary matter. The observed abundance ratios ofthese elements are earth-like. We discuss how these observations may give constraintson planetary systems.