Abundances of Very Heavy Elements in the Early Galaxy. Ii.

Details Abundances of Very Heavy Elements in the Early Galaxy. Ii. Abundances of Very Heavy Elements in the Early Galaxy. Ii.

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.5856c&link_type=abstract

HST Proposal ID #5856

Physics

Hst Proposal Id #5856 Cool Stars

Scientific paper

We propose to search for spectral lines indicating the presence of the very heavy elements platinum, iridium, bismuth and osmium in a very old, metal-poor halo star, and to determine the relative abundances of these elements. These elements, synthesized in stellar interiors by r(apid) and s(low) neutron capture processes, have never before been detected in metal-poor stars because their only strong lines lie in the ultraviolet spectral region. The abundances of these r- and s-process nucleosynthesis products in halo stars will serve to provide important constraints both on the early history and chemical evolution of the Galaxy and, indirectly, on the age of the Galaxy and the universe.

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