The dynamical imprint of elliptical galaxy formation through mergers

02/23/2010 -
3:00pm to 4:00pm
Loren Hoffman
Speaker affiliation: 
Northwestern University

Since the violent relaxation in hierarchical merging is incomplete, the distribution functions of galaxies contain a wealth of information about their formation pathways.  Recent advances in integral field spectroscopy, multi-slit infrared spectroscopy, and dynamical modeling techniques have greatly improved our ability to harvest this information.  I will discuss how various formation processes may imprint themselves on the present-day orbital structure of galaxies, with an emphasis on mergers between dynamically cold systems.  The merger model predicts a physically intuitive structure that bears a tantalizing resemblance to dynamical models of some observed slowly rotating ellipticals.  Simulated merger remnants also show a sharp kinematic transition between ~1 and 3 effective radii, highlighting the importance of large-radius spectroscopic observations for constraining galaxy formation models.

PDF icon slides2.83 MB

Home | Links | Credits | Search | Terms of Use | Disclaimer | My Account 

Center for Computational Relativity and Gravitation, School of Mathematical Sciences,
Rochester Institute of Technology,
One Lomb Memorial Drive, Rochester, New York 14623, USA
Phone: (585) 475-7752
Fax: (585) 475-7340
Education - This is a contributing Drupal Theme
Design by WeebPal.