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The Detection of Low Eu Abundances in Extremely Metal-poor Stars and the Origin of r -Process Elements

  • Ishimaru Y
  • Wanajo S
  • Aoki W
  • et al.
The Astrophysical Journal (2004) 600(1) L47-L50
DOI: 10.1086/381496
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Abstract

We report abundance analyses of three extremely metal-poor stars with [Fe/H] ≤ 3 using the Subaru High Dispersion Spectrograph. All are found to have subsolar values of [Eu/Fe]. Comparison with our chemical evolution model of the Galactic halo implies the dominant source of Eu to be the low-mass end of the supernova mass range. Future studies of stars with low Eu abundances will be important to determine the r-process site.

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APA

Ishimaru, Y., Wanajo, S., Aoki, W., & Ryan, S. G. (2004). The Detection of Low Eu Abundances in Extremely Metal-poor Stars and the Origin of r -Process Elements. The Astrophysical Journal, 600(1), L47–L50. https://doi.org/10.1086/381496

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