Herwig, Falk; VandenBerg, Don A.; Navarro, Julio F.; Ferguson, Jason; Paxton, Bill
(IOP Publishing, 2012-10-01)
We have investigated the color-magnitude diagram of omega Centauri and find that the blue main sequence (bMS) can be reproduced only by models that have a helium abundance in the range Y = 0.35-0.40. To explain the faint ...