GAS in Protoplanetary Systems (GASPS)

Abstract

The Herschel open time key programme GASPS is the first large survey of gas in 250 disks around young stars in the critical age range between 1 and 30 Myrs. It uses PACS line scans to detect atomic finestructure lines of [OI] and [CII], and molecular lines of CO, OH and H2O, altogether 450 hours of Herschel observing time. In a large modelling effort, a grid of 300000 thermo-chemical disk models with detailed con-tinuum and line transfer has been computed to interpret the results. In my talk, I will show how the first results fit into the models, and I will discuss how this new atomic and molecular inventory can be used to improve our understanding of disk evolution and planet formation. —