Thread: Ngc 2158
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Old 28-12-2008, 06:56 PM
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renormalised (Carl)
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You're pretty much spot on there, Trevor. Another difference is that OC's tend not to be gravitationally bound objects and split apart over time due to their passage through the spiral arms. GC's are gravitationally bound objects, but they can shed stars if those stars exceed the escape velocity of the cluster. GC's are also devoid of gas and dust for the most part whereas the OC's can have gas and dust present.
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