A clear age-velocity dispersion correlation in Andromeda's stellar disk

12 Feb 2015Claire E. DormanPuragra GuhathakurtaAnil C. SethDaniel R. WeiszEric F. BellJulianne J. DalcantonKaroline M. GilbertKatherine M. HamrenAlexia R. LewisEvan D. SkillmanElisa TolobaBenjamin F. Williams

The stellar kinematics of galactic disks are key to constraining disk formation and evolution processes. In this paper, for the first time, we measure the stellar age-velocity dispersion correlation in the inner 20 kpc (3.5 disk scale lengths) of M31 and show that it is dramatically different from that in the Milky Way... (read more)

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