Poster Presentation

ALMA Large Project: Early Planet Formation in Embedded Disks (eDisk)

Author(s): Nagayoshi Ohashi (ASIAA) and eDisk team

Presenter: Nagayoshi Ohashi (ASIAA)

Our ALMA Large Program to study early planet formation in embedded disks around protostars is approved for the Cycle 7. We plan to observe 17 protostars (7 Class 0 and 10 Class I) at a high spatial resolution of ~5 au (0.04") in the 1.3 mm continuum emission and CO 2-1 isotopologue lines, and investigate substructures and physical properties of embedded disks. The latest ALMA studies, such as DSHARP, have shown that substructures (rings/gaps, or spirals) are ubiquitous in protoplanetary disks around Class II sources. Such substructures may be a consequence of planet formation in the disks. It is therefore very important to see when substructures start to develop in disks. Our large protostellar sample allows us to explore for the first time how ubiquitous such substructures are in embedded disks. In my talk, I will summarize previous observations of embedded disks, and introduce our ALMA large program, including the progress of the project