Blue straggler stars in the unusual globular cluster NGC 6388
We have used multiband high-resolution HST WFPC2 and ACS observations combined with wide-field ground-based observations to study the blue straggler star (BSS) population in the Galactic globular cluster NGC 63 88. As in several other clusters we have studied, the BSS distribution is found to be bimodal: highly peaked in the cluster center, rapidly decreasing at intermediate radii, and rising again at larger radii. In other clusters the sparsely populated intermediateradius region (or "zone of...[Show more]
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|Source:||Astrophysical Journal, The|
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