Statistical detection of a tidal stream associated with the globular cluster M68 using Gaia data

  title={Statistical detection of a tidal stream associated with the globular cluster M68 using Gaia data},
  author={C. G. Palau and Jordi Miralda-Escud'e},
  journal={Monthly Notices of the Royal Astronomical Society},
A method to search for tidal streams and to fit their orbits based on maximum likelihood is presented and applied to the Gaia data. Tests of the method are performed showing how a simulated stream produced by tidal stripping of a star cluster is recovered when added to a simulation of the Gaia catalogue. The method can be applied to search for streams associated with known progenitors or to do blind searches in a general catalogue. As the first example, we apply the method to the globular… 
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