A study of the distribution in the HR diagram of stars in several old-disk population aggregates and in several halo-population aggregates indicates that the blue straggler phenomenon is ubiquitous. In all the cases considered, several stars are found to lie far from the locus defined by a semiempirical isochrone that best fits the distribution of the bulk of the stars in the aggregate. The results support the starburst interpretation of blue stragglers in young-disk aggregates.
No takes yet. Share an insight, caveat, or question.
Eggen et al. (1989) studied this question.