Binary stars in globular clusters: detection of a binary sequence in NGC 2808?

F. R. Ferraro, E. Carretta, F. Fusi Pecci +1

A CCD V,V-I colour-magnitude diagram (CMD) of the Galactic globular cluster NGC 2808 has been obtained with the ESO-NTT, reaching down to V ~ 24. The highly populated Main Sequence…