Dynamical traceback age of the $\beta$ Pictoris moving group

Understand

Context: The $\beta$ Pictoris moving group is one of the most well-known young associations in the solar neighbourhood and several members are known to host circumstellar discs, planets, and comets.

• Measuring its age with precision is basic to study several astrophysical processes such as planet formation and disc evolution which are strongly age dependent.
• Aims: We aim to determine a precise and accurate dynamical traceback age for the $\beta$ Pictoris moving group.
• Methods: Our sample combines the extremely precise Gaia DR2 astrometry with ground-based radial velocities measured in an homogeneous manner.