Dynamical modeling of the Galaxy and stellar migration in the disk

Details Dynamical modeling of the Galaxy and stellar migration in the disk Dynamical modeling of the Galaxy and stellar migration in the disk

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010sf2a.conf...37f&link_type=abstract

SF2A-2010: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: S. Boissier, M. Heydari-

Astronomy and Astrophysics

Astrophysics

1

Galaxy: Kinematics And Dynamics, Galaxy: Evolution

Scientific paper

We exhibit the local and global effects of the non-axisymmetry of the Milky Way potential. In addition to creating moving groups in the Solar neighborhood, we show that spiral structure interacting with a central bar is an effective mechanism for mixing the whole stellar disk radially. This spiral-bar resonance overlap mechanism accounts for the absence of age-metallicity relation in the solar neighborhood, can create extended disks in both Milky Way-mass and low-mass galaxies, and could also be responsible for the formation of a thick disk component early-on in the Galaxy evolution.

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