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astro-ph.GA2024
Why is the Galactic disk so cool?
Chris Hamilton, Shaunak Modak, Scott Tremaine
The bulk of old stars in the Galactic disk have migrated radially by up to several kpc in their lifetimes, yet the disk has remained relatively cool, i.e., the ratio of radial heat…
astro-ph.GA2024
Eccentricity dynamics of wide binaries -- II. The effect of stellar encounters and constraints on formation channels
Chris Hamilton, Shaunak Modak
GAIA wide stellar binaries (separations AU) are observed to have a superthermal eccentricity distribution function (DF), well-fit by with $…