Evidence for r-Process Elements in HR 8911

Details Evidence for r-Process Elements in HR 8911 Evidence for r-Process Elements in HR 8911

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ap%26ss..31..193g&link_type=abstract

Astrophysics and Space Science, Volume 31, Issue 1, pp.193-201

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

The results of a spectral analysis of some high-dispersion plates of the peculiar star HR 8911 (κ Piscium) are reported, and the observational evidence for somer-only elements in the atmosphere of this object is discussed. Many uranium lines were observed, so that the presence of this element may be considered certain. The presence of uranium and of some elements with mass number around theA˜195 peak gives strong evidence for anr-process mechanism which originated the elemental peculiarities in this object. The implications about the origin of peculiar stars are discussed on the ground of an explosive origin of ther-process elements observed in this star. Finally, the uncommon element holmium seems very likely to be present in the atmosphere of this peculiar star.

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