Lifetimes of protoplanetary disks in multiple star systems

MARÍA PAULA RONCO; OCTAVIO MIGUEL GUILERA; JORGE CUADRA

Palm Cove

Congreso; Great Barriers in Planet Formation; 2019

Dust Busters Project

Thedissipation of a protoplanetary disk is one of the key processesaffecting planet formation, and it is widely accepted that happens ona timescale of a few million years, for disks around single stars.Manyexoplanets have been recently discovered orbiting binary and evenmultiple star systems. For such cases, the environments where theyformed are much more complex than for a disk around a single star. Akey ingredient to understand these planets? formation is how longdo these disks take to dissipate and how that timescale affectsplanet formation.Herewe present preliminary results on the evolution of circumbinaryprotoplanetary disks affected by a third stellar companion. For sucha disk, the tidal torques due to the inner binary, the truncation ofthe disk due to the external companion, and the photo evaporation canall significantly alter the disk lifetimes and thus, the process ofplanet formation. To study this scenario we made use of 1D models andanalize the disks evolution taking into account a wide range of diskparameters. One of the main goals of this study is to betterunderstand the longevity of protoplanetary disks in multiple systems,such as HD98800.p { margin-bottom: 0.25cm; line-height: 115% }