Chemical composition of ices in protoplanetary disks

Astrochemical modeling of protoplanetary disks allows predicting chemical composition of gas and ice around young stellar objects. The circumstellar matter is an initial material that makes up a future planetary system. Cometary ices are supposed to trace the chemical composition to the composition of ices in the protoplanetary disk. In this study, chemical composition of ices in protoplanetary disks is investigated for an ensemble of models with different parameters, like disk mass and size. We describe the disk regions where the abundances of major ices are similar to those observed in comets in the Solar System. The dependence of the position of this region on disk parameters is investigated.