Prof. Timothy Beers (National Optical Astronomy Observatory)
"Carbon, The Universe, and Everything"
Abstract. I report on the connections between the so-called carbon-enhanced metal-poor (CEMP) stars and nucleosynthesis by the first generations of stars in the Universe. In a nutshell, a plausible story can now be told establishing that a subset of the CEMP stars (those without neutron-capture enhancements, the CEMP-no stars) exhibit the nucleosynthetic signature of the VERY first stars, providing tools for understanding the nature of these stars, born within a few hundred million years after the Big Bang. In addition, I comment on a possible resolution of the discrepancy between the abundance of Li on the Spite Plateau and the primordial value of Li expected from Big Bang Nucleosynthesis, which is also revealed by analysis of the CEMP-no stars. The need for, in particular, bright examples of CEMP-no stars (e.g., V <= 10.0) in order to obtain measurements of their light elements Be and B, is highlighted.
Held in the AAO Meeting Room (Room 7, 1st Floor, Building 2) at 11:00 AM on Wednesday, 21 May 2014back