The Detection of a 45° Tidal Stream Associated with the Globular Cluster NGC 5466 | Zendy

Carl J. Grillmair | Zendy; R. A. Johnson | Zendy

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The Detection of a 45° Tidal Stream Associated with the Globular Cluster NGC 5466

Author(s) -

Carl J. Grillmair,

R. A. Johnson

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/501439

Subject(s) - globular cluster , sky , physics , proper motion , halo , astrophysics , stars , magnitude (astronomy) , cluster (spacecraft) , open cluster , astronomy , galaxy , computer science , programming language

We report on the detection in Sloan Digital Sky Survey data of a 45 degreetidal stream of stars, extending from Bootes to Ursa Major, which we associatewith the halo globular cluster NGC 5466. Using an optimal contrast, matchedfilter technique, we find a long, almost linear stellar stream with an averagewidth of 1.4 degrees. The stream is an order of magnitude more tenuous than thestream associated with Palomar 5. The stream's orientation on the sky isconsistent to a greater or lesser extent with existing proper motionmeasurements for the cluster.Comment: 11 pages, 2 figures, published in ApJ Letter

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