Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001asthe..94...55a&link_type=abstract
The Astronomical Herald (ISSN 0374-2466), Vol. 94, No. 2, p. 55 - 62 (2001)
Astronomy and Astrophysics
Astronomy
Metal-Deficient Stars: Nucleosynthesis, Galaxy: Chemical Evolution
Scientific paper
Recent studies in high resolution spectroscopy of very metal-deficient stars have revealed the details of nucleosynthesis for light-to-heavy mass elements, which has progressively enriched our understanding on the chemical evolution of the Universe and the Galaxy. We have discovered large excess of the s-process elements in one of these metal-deficient stars, and have succeeded in the detection of lead, for the first time, which is one of the heaviest stable elements discovered in this star. We have also made a great progress in the theoretical studies on the origin of the r-process and its role in cosmology as well as the evolution of the early Galaxy. In this article we present our recent progress in the studies of the neutron-capture processes (so-called s-process and r-process) and express our expectations in the High Dispersion Spectrograph for Subaru Telescope.
Ando Hiroyasu
Aoki Wako
Kajino Toshitaka
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