| Gas is the dominant mass constituent of protoplanetary disks. Its structure and evolution profoundly impact every major step of planet formation: planetesimal formation, accretion of planetary atmospheres, and migration of planets. Yet, we do not have a basic understanding of how the gas disk evolves and what mechanism drives the global evolution. The “ALMA survey of Gas Evolution in PROtoplanetary disks”, AGE-PRO, is the first ALMA Large Program to constrain the evolution of the mass and size of gas disks at three evolutionary phases: the embedded disk phase, the middle-age, and the end of the disk lifetime. In this talk I will present the legacy dataset we have acquired in AGE-PRO, and preliminary results that compare model predictions of disk evolution with our AGE-PRO mass and size measurements of disks at different ages. |
