Quantifying the (X/peanut)-shaped structure of the Milky Way – new constraints on the bar geometry

  title={Quantifying the (X/peanut)-shaped structure of the Milky Way – new constraints on the bar geometry},
  author={Bogdan C. Ciambur and Alister W. Graham and Joss Bland-Hawthorn},
  journal={Monthly Notices of the Royal Astronomical Society},
The nature, size and orientation of the dominant structural components in the Milky Way's inner ~4 kpc - specifically the bulge and bar - have been the subject of conflicting interpretations in the literature. We present a different approach to inferring the properties of the long bar which extends beyond the inner bulge, via the information encoded in the Galaxy's X/peanut (X/P)-shaped structure. We perform a quantitative analysis of the X/P feature seen in WISE wide-field imaging at 3.4 $\mu… 

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