The Detection of a 45° Tidal Stream Associated with the Globular Cluster NGC 5466
نویسندگان
چکیده
منابع مشابه
Tidal Stream Associated with the Globular Cluster NGC
We report on the detection in Sloan Digital Sky Survey data of a 45 • tidal stream of stars, extending from Bootes to Ursa Major, which we associate with the halo globular cluster NGC 5466. Using an optimal contrast, matched filter technique, we find a long, almost linear stellar stream with an average width of 1.4 •. The stream is an order of magnitude more tenuous than the stream associated w...
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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, z space. The tails are clearly visible, once extra-galactic contaminants and field stars have been eliminated. They extend ∼ 4 • on the sky, corresponding t...
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Through time-series CCD photometry of the globular cluster NGC 5466, we have detected nine SX Phoenicis stars including three new ones. All the SX Phoenicis stars are located in the blue straggler region in the color-magnitude diagram of NGC 5466. Five of them show clearly double-radial mode features, the periods of which are well consistent with the theoretical ratio of the first overtone mode...
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We present a wide field CCD photometric study of Galactic globular cluster NGC 7492. The derived V R color-magnitude diagram extends down to about 3.5 mag below the cluster main sequence turn-off. The field covers 42 × 42 about 3 times larger than the known tidal radius of this cluster. The sample of cluster member candidates obtained by CMD-mask process has been used to construct luminosity an...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2006
ISSN: 0004-637X,1538-4357
DOI: 10.1086/501439