Physics Colloquium - Spring 2005 - High Redshift Galaxies in the Hubble Ultra Deep Field
Dept of Physics & Astronomy
University of Maine, Orono, Maine
and the Distinguished Lecturer Series
Present
Professor Debra Elmegreen
Maria Mitchell Professor of Astronomy
Chair, Physics & Astronomy Dept.
Vassar College
High Redshift Galaxies in the Hubble Ultra Deep Field
The Hubble Ultra Deep Field encompasses 10,000 galaxies. Several galaxy morphologies not seen in the local universe, such as linear chain galaxies and tadpoles, dominate at the faintest magnitudes. Photometric properties of nearly 900 galaxies are compared with models to estimate redshifts and star formation histories. Star formation rates are determined in Lyman Break galaxies as distant as redshift z=5. These results are considered in the context of hierarchical build-up models for galaxy formation.
Friday, April 29, 2005
3:10 pm
140 Bennett Hall
Refreshments will follow in Rm. 114, Bennett Hall
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