Numerical Modelling of the Tidal Tails of NGC 5466

Details Numerical Modelling of the Tidal Tails of NGC 5466 Numerical Modelling of the Tidal Tails of NGC 5466

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..246..189f&link_type=abstract

Dynamical Evolution of Dense Stellar Systems, Proceedings of the International Astronomical Union, IAU Symposium, Volume 246, p.

Astronomy and Astrophysics

Astronomy

Globular Cluster: Individual (Ngc 5466), Galaxy: Kinematics And Dynamics, Galaxy: Halo, Methods: N-Body Simulations

Scientific paper

The study of sub-structures in the stellar halo of the Milky Way has made a lot of progress in recent years, especially since surveys like the Sloan Digital Sky Survey became available. In this paper we focus on the newly discovered tidal tails of the Galactic globular cluster NGC 5466. By means of numerical simulations we reproduce the tidal tails, which are the longest tails associated with a globular cluster known (>45°) and hereby finding a possible progenitor of NGC 5466 and analyse its stability. We show that perigalactic passages are the dominant process in the slow dissolution of NGC 5466. Furthermore we use the position of the tails to verify the accuracy of the observationally determined proper motion. The proper motion has to be refined only slightly (within their stated error-margin) to match the location of the tidal tails.

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