9:00 AM - 9:15 AM
[PCG20-01] Early Planet Formation in Embedded Disks (eDisk): Program overview and first results
Keywords:Protoplanetary disks, Star and planet formation, Protostars, Atacama Large Millimeter/Submillimeter Array
The first-look results show that the continuum emission, mostly arising from disks around the sample protostars, have relatively few distinctive substructures, such as rings and spirals, in marked contrast to Class II disks. The drastic difference from Class II disks may suggest that substructures quickly develop in disks when the systems evolve from protostars to Class II sources or alternatively that high optical depth of the continuum emission could obscure the internal structures.
Kinematic information also obtained through CO isotopologue lines and other lines reveal the presence of Keplerian disks around protostars, providing us with crucial physical parameters, in particular, the dynamical mass of the central protostars. In this presentation, we describe the background of the eDisk program, the sample selection and their ALMA observations, and also highlight representative first-look results.