[O/Fe] versus [Fe/H] for CD-62°1346 (black circle), disk stars (blue circles), CEMP-s stars (red circles), and CEMP-no stars (green triangles). Abundance data for the disk stars are taken from Edvardsson et al. (1993) and Nissen et al. (2002). Abundance data for CEMP-no stars are taken from Cayrel et al. (2004) and from Masseron et al. (2010) and abundance data for CEMP-s stars are taken from Masseron et al. (2010).