8-12 juin, 2014


Comprehensive Galaxy Morphology and Classification from the Near to the Far Universe

Ronald Buta (University of Alabama)

For almost a century, galaxy morphology and classification have been considered an essential step in understanding how galaxies formed and have evolved over time. Galaxy morphology is rich in details that are clues to the internal and external physical processes that have molded their shapes. It is non-trivial to determine exactly what a given morphology actually implies about the history of a galaxy, because we only see what is basically a snapshot of any galaxy. Only by examining the collective morphology of galaxies, the full range of types both near and far, in conjunction with physical data can we hope to piece together the general evolutionary paths of different classes of galaxies. The large amount of high quality imaging available at this time makes it possible to take galaxy morphology to realms it has not been taken before. In my presentation, I want to describe how galaxy classification and morphology are being used today to learn about galactic star formation history, the development and evolution of structures such as bars, rings, and lenses, and how a comprehensive approach to classification can be used to try and bridge the gap between nearby and extremely distant galaxies.
(doit être confirmé par le SOC)