For galactic stars, log(Be/H) vs. [O/H] following Boesgaard et al. (2011; blue filled circles). The upper limit of the abundance of Be in 2MASS J1808-5104 and BD + 44°493 are indicated with big red and blue open circles. Panel A: the oxygen abundance was simply computed with the 1D LTE hypothesis, as in Boesgaard et al. (2011). Panel B: this abundance has been corrected for 3D effects. The blue dashed line represents the mean relation and the red dashed line the two-slope solution with a change of the slope around [O/H] = − 1.5 dex as in Boesgaard et al. (2011). The positions of BD + 44°493 and 2MASS J1808-5104 in this diagram are hardly compatible with the mean relations.
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