|Authors||Giovanni Carraro (1), Fabio Bresolin (2), Sandro Villanova (3), Francesca Matteucci (4), Ferdinando Patat (5), Martino Romaniello (5)|
|Accepted by||Astronomical Journal|
|Links||Berkeley 29 / Saurer 1|
Based on these data, we first revise the fundamental parameters of the clusters, and then discuss them in the context of the Galactic disk radial abundance gradients. Both clusters seem to significantly deviate from the general trend, suggesting that the outer part of the Galactic disk underwent a completely different evolution compared to the inner disk. In particular Berkeley 29 is clearly associated with the Monoceros stream, while Saurer 1 exhibits very different properties. The abundance ratios suggest that the chemical evolution of the outer disk was dominated by the Galactic halo.