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The Impact of Stellar Migration on Disk Outskirts

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arxiv 1706.01996 v1 pith:FZIBLM24 submitted 2017-06-06 astro-ph.GA

The Impact of Stellar Migration on Disk Outskirts

classification astro-ph.GA
keywords disksoutergalaxiesmigrationtypebeenchurningprofiles
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Stellar migration, whether due to trapping by transient spirals (churning), or to scattering by non-axisymmetric perturbations, has been proposed to explain the presence of stars in outer disks. After a review of the basic theory, we present compelling, but not yet conclusive, evidence that churning has been important in the outer disks of galaxies with type II (down-bending) profiles, while scattering has produced the outer disks of type III (up-bending) galaxies. In contrast, field galaxies with type I (pure exponential) profiles appear to not have experienced substantial migration. We conclude by suggesting work that would improve our understanding of the origin of outer disks.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Witnessing the rapid growth of disk galaxies over cosmic time using JWST and HST

    astro-ph.GA 2026-05 unverdicted novelty 7.0

    At z=1, disk galaxies exhibit U-shaped stellar age profiles with turnover at the edge, indicating inside-out growth with approximately 300% mass increase in outer regions since z=0.