Aguilera-Gómez, C., Chanamé, J., Pinsonneault, M. H. & Carlberg, J. K.
2016, ApJL, 833,24
https://ui.adsabs.harvard.edu/abs/2016ApJ…833L..24A/abstract
Two Li-rich giants had been found in the open cluster Trumpler 20. We present an explanation, where Li is normal in the vast majority of cluster stars and anomalously high in these two cases. We demonstrate that the Li upper limits in the red giants can be explained with a combination of main-sequence depletion and standard dredge-up and that they are close to the detected levels in other systems of similar age. The two Li rich giants could be explained by the engulfment of 16(+6-10) jupiter mass object.