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Hi Mike
I had a quick peek at this yesterday, and managed to find the following information via a Google search.
The stars in globular clusters are generally older, redder and less massive than our Sun.
Globular clusters normally consist of Population II stars, which have a low metallic content compared to Population I stars such as the Sun. (To astronomers, metals includes all elements heavier than helium, such as lithium and carbon.)
In globular clusters a few stars known as blue stragglers are observed, apparently continuing the main sequence in the direction of brighter, bluer stars. The origins of these stars is still unclear, but most models suggest that these stars are the result of mass transfer in multiple star systems.
Cheers
Dennis
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