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Study details the physics of proto-stellar disk formation

Study details the physics of proto-stellar disk formation

Science
Sept. 6 (UPI) -- In studying the movements of a trio of protostars in the Perseus molecular cloud, astronomers have gained new insights into the physical conditions that enable the formation of proto-stellar disks. The basic roadmap for the formation of stellar and planetary systems is well established. Over time, gas and dust in interstellar space coalesce. Eventually, the dense cloud of material collapses under its own gravity. A stellar core forms and, thanks to the conservation of angular momentum, a proto-stellar disk forms. After roughly 100,000 years or more, the star gets dense enough to ignite nuclear fusion. Shortly afterwards, planets form from the proto-stellar disk. But questions remain. The details of how angular momentum enables proto-stellar disk formation remains poorly ...