On the trapping of stars by a newborn stellar supercluster - Astrophysics > Cosmology and Nongalactic AstrophysicsReportar como inadecuado




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Abstract: Numerical experiments conducted by Fellhauer et al. MNRAS, 372, 338, 2006suggest that a supercluster may capture up to about 40 per cent of its massfrom the galaxy where it belongs. Nevertheless, in those experiments thecluster was created making appear its mass out of nothing, rather than frommass already present in the galaxy. Here we use a thought experiment, plus afew simple computations, to show that the difference between the dynamicaleffects of these two scenarios i.e., mass creation vs. mass concentration isactually very important. We also present the results of new numericalexperiments, simulating the formation of the cluster through massconcentration, that show that trapping depends critically on the process ofcluster formation and that the amounts of gained mass are substantially smallerthan those obtained from mass creation.



Autor: D. D. Carpintero, J. C. Muzzio

Fuente: https://arxiv.org/



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