When Cold Radial Migration is Hot: Constraints from Resonant Overlap

• Published in: The Astrophysical journal Vol. 882; no. 2; pp. 111 - 123
• Main Authors: Daniel, Kathryne J., Schaffner, David A., McCluskey, Fiona, Kawaguchi, Codie Fiedler, Loebman, Sarah
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 10.09.2019; IOP Publishing
• Subjects: Angular momentum; Approximation; Astrophysics; chaos; Cold; Computer simulation; Constraints; Corotation; Cylinders; Diffusion rate; Galactic rotation; galaxies: evolution; galaxies: kinematics and dynamics; galaxies: spiral; Galaxy: disk; Galaxy: evolution; Heating; Kinematics; Mathematical analysis; Milky Way; Populations; Random walk; Stars

It is widely accepted that stars in a spiral disk, like the Milky Way's, can radially migrate on the order of a scale length over the disk's lifetime. With the exception of cold torquing, also known as "churning," processes that contribute to the radial migration of stars are nec...