Fig. 15.
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Evidence of very faint, extended outer loops around the edge-on spirals UGC08717 (top panels) and 2MASXJ12284541-0838329 (bottom panels) detected as a result of the accurate sky background subtraction described in Sect. 2.2. These examples illustrate the effect of the surface brightness cut-off of the data on the interpretation of the overall morphology of the streams.
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