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A very low upper limit for a Be abundance of a carbon-enhanced metal-poor star

  • Hiroko Ito (a1) (a2), Wako Aoki (a1) (a2), Satoshi Honda (a3), Timothy C. Beers (a4) and Nozomu Tominaga (a5)...

Abstract

We performed a 1D LTE chemical abundance analysis of an extremely metal-poor star BD+44°493 ([Fe/H]= −3.7), and set a very low upper limit for its Be abundance: A(Be) < −2.0. It may indicate that the decreasing trend of Be abundances with lower [Fe/H] still holds at [Fe/H] < −3.5, and demonstrate that high C and O abundances do not necessarily imply high Be abundances. However, since the star is a subgiant with Teff ~ 5500K, Be may be depleted.

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References

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Keywords

A very low upper limit for a Be abundance of a carbon-enhanced metal-poor star

  • Hiroko Ito (a1) (a2), Wako Aoki (a1) (a2), Satoshi Honda (a3), Timothy C. Beers (a4) and Nozomu Tominaga (a5)...

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