A binary star fraction of 76 per cent and unusual orbit parameters for the blue stragglers of NGC 188.


Blue straggler stars lie on or near the main sequences of star clusters (all members of which formed around the same time), but typically are more luminous than the turn-off stars and therefore long ago should have evolved off the main sequence to become giants and white dwarfs. They are thought to derive from normal main-sequence stars that have undergone… (More)
DOI: 10.1038/nature08568


3 Figures and Tables

Blog articles referencing this paper