* Astronomy

Hubble Revisits a Globular Cluster's Age

IC 4499 is a somewhat special case. Its mass lies somewhere between low-mass globulars, which show a single generation build-up, and the more complex and massive globulars which can contain more than one generation of stars. By studying objects like IC 4499 astronomers can therefore explore how mass affects a cluster's contents. Astronomers found no sign of multiple generations of stars in IC 4499 - supporting the idea that less massive clusters in general only consist of a single stellar generation.
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