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2011ApJ...738L..33T - Astrophys. J., 738, L33 (2011/September-2)

A possible signature of non-uniform be-α relationships for the galaxy.

TAN K. and ZHAO G.

Abstract (from CDS):

Most of the previous studies on beryllium abundances in metal-poor stars have taken different Galactic populations as a whole when investigating the production and evolution of Be. In this Letter, we report on the detection of systematic differences in [α/H]-A(Be) relationships between the low- and high-α stars which were identified by previous works. We remind that one should be more careful in investigating the Galactic evolution of Be with a sample comprising different Galactic populations, because such a mixed sample may lead to inaccurate Be-Fe/Be-O relationships.

Abstract Copyright:

Journal keyword(s): Galaxy: formation - Galaxy: halo - stars: abundances

Simbad objects: 44

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