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SUMMARY:Implications of Radial Migration for Disk Galaxies - Rok Roskar (Z
 urich)
DTSTART:20110223T134500Z
DTEND:20110223T141500Z
UID:TALK29016@talks.cam.ac.uk
CONTACT:Dan Stark
DESCRIPTION:Recent theoretical work suggests that it may be common for sta
 rs\nin the disks of spiral galaxies to migrate radially across significant
 \ndistances in the disk. Such migrations are a result of spiral\ncorotatio
 n resonance scattering and move the guiding centers of\nthe stars while pr
 eserving the circularities of their orbits.\nMigration can therefore effic
 iently mix stars in all parts of\nthe disk. In the extreme\, radial migrat
 ion allows the evolution\nof the innermost regions to contribute significa
 ntly to the\noutermost parts of the disk. I will discuss the results from\
 nidealized N-body/SPH simulations of disk formation and evolution\,\nempha
 sizing the observational consequences of stellar migration\non the solar n
 eighborhood\, the thick and thin disks of the Galaxy\,\nas well as externa
 l disks.
LOCATION:Sackler Lecture Theatre\, IoA
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