3–7 Dec 2018
Kavli IPMU
Asia/Tokyo timezone

Neutron-capture Nucleosynthesis in Relics of the First Galaxies

4 Dec 2018, 15:35
30m
Lecture Hall (Kavli IPMU)

Lecture Hall

Kavli IPMU

5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 227-8583
s- and r-process nucleosynthesis s-/r-process

Speaker

Dr Alexander Ji (Carnegie Observatories )

Description

Ultra-faint dwarf galaxies are ideal systems to perform stellar
archaeology, as each galaxy provides multiple metal-poor stars sampling an
independent burst of star formation and chemical enrichment from the early
universe. In this talk, I will discuss the neutron-capture element
signature in ultra-faint dwarf galaxies, which chemically distinguish these
systems from most halo stars, globular clusters, and larger dwarf galaxies.
The stars in these tiny galaxies display highly stochastic neutron-capture
element enrichment, with a neutron-capture element floor of unknown origin.
I will also show some early evidence that r-process elements provide a
means to link ultra-faint dwarf galaxies to the Milky Way's old stellar
halo.

Affiliation

Carnegie Observatories

Talk/Poster Talk

Primary author

Dr Alexander Ji (Carnegie Observatories )

Presentation materials