Speaker
Dr
Jinmi Yoon
(University of Notre Dame)
Description
The study of extremely metal-poor (EMP; [Fe/H] < -3.0) and ultra metal-
poor (UMP; [Fe/H] < -4.0) stars is crucial for better understanding
first-star nucleosynthesis and constraining the initial mass function in the early
Universe. However, UMP stars discovered in the past 25
years only number about 25 stars. A few recent theoretical studies have
pointed out that there is likely to exist large numbers of EMP and UMP
stars in the periphery of the Galactic halo, at distances exceeding
30-50 kpc. We present a project begun to expedite discovering hundreds
to thousands of EMP and UMP stars in the outermost halo in the next few
years, which will revolutionize studies of chemical evolution in the
Galaxy.
Primary author
Dr
Jinmi Yoon
(University of Notre Dame)
Co-authors
Prof.
Timothy Beers
(University of Notre Dame)
Dr
Vinicius Placco
(University of Notre Dame)
Prof.
Young Sun Lee
(Chungnam National University)