Statistics – Computation
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258..476p&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 3, p. 476-482.
Statistics
Computation
4
Celestial Mechanics, Globular Clusters, Pulsars, Stellar Evolution, Stellar Motions, Stellar Systems, Capture Effect, Computational Astrophysics, Diffusion Coefficient, Star Distribution, Stellar Physics
Scientific paper
We investigate a new interaction of globular clusters with galactic field stars: the deceleration (by dynamical friction) of high-velocity field stars diffusing through individual globular clusters. This frictional interaction contributes to cluster heating and, in conjunction with disk shocking and other mechanisms, helps to regulate the evolution of globular clusters. Moreover, penetrating field stars of low relative velocity can even be captured by globular clusters. Our calculated rate of capture suggests that there is a modest population of stars having an origin external to the clusters in which they now reside. Intriguing candidates for this 'immigrant' population include some blue stragglers and short-period pulsars.
Peng Wei
Weisheit Jon C.
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