Does an old, red globular cluster have any hot, blue stars? Photos taken in two wavelength bands, with comments on stellar evolution in the cluster.
http://www.phy.ncku.edu.tw/~astrolab/mirrors/apod/ap961004.html
A technical article from the Los Alamos E-print archive that discusses the possibility that Omega Centauri could be the remains (nucleus) of a once larger satellite dwarf galaxy th...
http://arXiv.org/abs/astro-ph/9910278
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