Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.8508s&link_type=abstract
American Astronomical Society Meeting 203, #85.08; Bulletin of the American Astronomical Society, Vol. 35, p.1344
Astronomy and Astrophysics
Astronomy
Scientific paper
We present elemental abundances (and/or) upper limits for the neutron-capture elements germanium (Z=32), osmium (76), and platinum (78) for a dozen low metallicity ([Fe/H] < --1.5) halo field giants. These abundances are compared with previously-determined results for lanthanum (57) and europium (63) for the same stars.
The abundances of Os and Pt are well correlated with those of La and Eu, but the Ge abundances do not scale with those of the heavier neutron-capture elements, and in fact appear to better track the Fe-peak abundances in these stars. Rapid neutron-capture synthesis (i.e. the r-process) is responsible for the creation of the heaviest (Z ≥ 56) neutron-capture elements in these low-metallicity stars. The nucleosynthesis puzzle now is to understand the formation of Ge and its neighbors in the Periodic Table.
This research has been supported by grants from the Hubble Space Telescope (STScI grant GO-08342), and the NSF grants AST-0307495, AST-0098508, AST-0098549, and AST-0307279.
Beers Timothy C.
Burles Scott
Cowan John J.
Primas Francesca
Sneden Chistopher
No associations
LandOfFree
Germanium, Osmium, and Platinum in Low Metallicity Halo Giants does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Germanium, Osmium, and Platinum in Low Metallicity Halo Giants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Germanium, Osmium, and Platinum in Low Metallicity Halo Giants will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1421694