Compared to globular clusters, how is the gravitational binding within open clusters characterized?
Answer
Loosely bound by gravity
Open clusters are defined by the relative weakness of the gravitational attraction holding their constituent stars together. They are loosely bound groups, meaning the mutual gravitational influence exerted between individual stars is relatively slight compared to the dense, tightly packed globular clusters. This weak binding prevents them from forming compact, spherical shapes, resulting instead in a more scattered and diffuse arrangement of members. This low-density, weak coupling is a primary reason these clusters are susceptible to external forces and have short lifespans.
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