Evolution of circumprimary and circumbinary protoplanetary disks: birthplaces of planets in binary star systems

MARÍA PAULA RONCO; OCTAVIO MIGUEL GUILERA; JORGE CUADRA; MARCELO MIGUEL MILLER BERTOLAMI

Antofagasta

Congreso; LARIM 2019: XVI Latin American Regional IAU Meeting; 2019

SOCHIAS

The dissipation of a protoplanetary disk is one of the key processes affecting planet formation, and it is widely accepted that happens on a timescale of a few million years, for disks around single stars.Many exoplanets, both S-type and P-type, have been recently discovered orbiting binary star systems. For such cases, the environments where they formed are much more complex than for a disk around a single star. A key ingredient to understand these planets? formation is how long dothese disks take to dissipate and how that timescale affects planet formation. The dust evolution in these disks, linked to the gas disk evolution, is also important since it will be responsible for the formation of the future planets. Here we present results on the evolution of gas and dust in circumprimary and circumbinary protoplanetary disks compared with disks around single stars. The truncation of the disk due to theexternal companion in circumprimary disks and the tidal torques due to the inner binary in circumbinary disks, combined with photoevaporation processes, significantly alter the disk lifetimes and thus, the process of planet formation. To study these scenarios we made use of1D+1D models that allow us to analize the disks evolution taking into account a wide range of disk parameters.