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The Discovery of Tidal Tails Around NGC 5466

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arxiv astro-ph/0511767 v1 pith:P7UF3VC2 submitted 2005-11-28 astro-ph

The Discovery of Tidal Tails Around NGC 5466

classification astro-ph
keywords tailsclusterarounddatadiscoverygalacticstarstidal
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report the discovery of tidal tails around the high-latitude Galactic globular cluster NGC 5466 in Sloan Digital Sky Survey (SDSS) data. Neural networks are used to reconstruct the probability distribution of cluster stars in u,g,r,i and z space. The tails are clearly visible, once extra-galactic contaminants and field stars have been eliminated. They extend roughly 4 degrees on the sky, corresponding to about 1 kpc in projected length. The orientation of the tails is in good agreement with the cluster's Galactic orbit, as judged from the proper motion data.

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