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

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

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..268..337i&link_type=abstract

Light Elements in the Universe, Proceedings of the International Astronomical Union, IAU Symposium, Volume 268, p. 337-338

Astronomy and Astrophysics

Astronomy

Stars: Abundances, Individual (Bd+44°493), Population Ii

Scientific paper

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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