Thorium in the spectrum of HR465

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TypeBook Chapter
Book titleNature
Pages311–; # of pages: 1
SubjectA Stars; Abundance; Chronology; Line Spectra; Stellar Spectra; Thorium, Nuclear Fusion; Rare Earth Elements; Spectral Line Width; Stellar Evolution; Uranium
AbstractThe presence of thorium in the peculiar A star HR 465 is confirmed. It is noted that a moderate spectral feature at 4019.12 A in HR 465 was previously attributed to Th II and that measurements of the wavelengths in the spectra of some 50 Ap and Am stars showed that only HR 465 exhibited that line. The thorium abundance in this star is estimated, and the Th/U ratio is examined. It is concluded that both thorium and uranium were produced by nucleosynthesis in HR 465 at some time more recently than the formation of the oldest globular clusters.
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Peer reviewedYes
NRC number14615
NPARC number21275036
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Record identifiere316fd2d-f80a-42fe-abdb-3f85933998cf
Record created2015-05-05
Record modified2016-05-09
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