Documents The blue stragglers formed via mass transfer in old open clusters B. Tian, L. Deng, Z. Han, and X.B....

Slide 1The blue stragglers formed via mass transfer in old open clusters B. Tian, L. Deng, Z. Han, and X.B. Zhang astro-ph:0604290 Slide 2 What’s ‘Blue straggler’?…