The Origin of the Bifurcation in the Sagittarius Stream

@article{Fellhauer2006TheOO,
  title={The Origin of the Bifurcation in the Sagittarius Stream},
  author={Michael Fellhauer and Vasily A Belokurov and N. Wyn Evans and Mark I. Wilkinson and Daniel B. Zucker and Gerry F. Gilmore and Michael J. Irwin and Daniel M. Bramich and Simon Vidrih and Rosemary F. G. Wyse and Timothy C. Beers and J. Brinkmann Cambridge and Jhu and Michigan State University and Apache Point Observatory},
  journal={The Astrophysical Journal},
  year={2006},
  volume={651},
  pages={167-173}
}
The latest Sloan Digital Sky Survey data reveal a prominent bifurcation in the distribution of debris of the Sagittarius dwarf spheroidal (Sgr) beginning at a right ascension of α ≈ 190°. Two branches of the stream (A and B) persist at roughly the same heliocentric distance over at least 50° of arc. There is also evidence for a more distant structure (C) well behind the A branch. This paper provides the first explanation for the bifurcation. It is caused by the projection of the young leading… 

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