The Morphological Evolution of the spiral galaxies

Do the spiral galaxies still evolve? Abundance gradient is a powerful tracer of the galactic evolution. It the past, it as been demonstrated that large scale flow of gaz induce by bar can flatten the gradient. In some case, some bars are so young that the mix process did not had the time the reach all the disk. At the opposite, the flat abundance gradient of early type-spiral betray the existance of a bar, which has now disapear.

 

Date: 
26/06/2000 - 14:00
Speaker: 
Yvan Dutil
Filiation: 
Universidad Politécnica de Cataluña


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