Rotation in star and planet forming regions

speaker: Nagayoshi Ohashi

One of the remarkable properties of stars is the ubiquity of spinning motion, which can be found in any astrophysical objects in our Galaxy. The rotation period of the Sun is about one month and those of other stars vary a lot. In case of neutron stars they are as small as milli-seconds. Rotation is also commonly observed in dense cores, and it plays essential roles in star and planet formation, i.e., rotation is crucial to form protoplanetary disks around young stellar objects (YSOs) and also to drive outflows/jets. Nevertheless, rotation in dense cores has been studied less systematically than infall and outflow motions to date
In my presentation, I will review previous key works studying rotation in dense cores and try to summarize the latest understanding of how angular momentum transfers from outer parts to inner parts of dense cores based on my personal view. As a related topic, I will also discuss the latest observational results of embedded disks with an emphasis on the eDisk ALMA large program.