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Astronomy Colloquium - "Rare Elements from the First Stars to Today"

Event Type
Seminar/Symposium
Sponsor
Department of Astronomy
Location
Astronomy 134
Date
Apr 21, 2015   3:45 pm  
Speaker
Ian Roederer, University of Michigan
Contact
Rebecca Bare
E-Mail
rsbare@illinois.edu
Views
49
Originating Calendar
Astronomy Colloquium Speaker Calendar

Understanding the origin of the elements is one of the major challenges of modern astrophysics. Elements along the bottom two-thirds of the periodic table---including arsenic, selenium, barium, europium, lead, thorium, uranium, and others---are mainly produced by neutron-capture reactions. Some had not been detected previously in late-type stars, and the origins of all are not fully understood at present. My work focuses on abundances derived from high-resolution spectroscopic data of globular clusters and stars in the stellar halo. I will present recent observations of these elements that successfully muddy our understanding of when and how they were first introduced in the early Universe.

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