A Distant Extended Spiral Arm in the Fourth Quadrant of the Milky Way

@article{McClureGriffiths2004ADE,
  title={A Distant Extended Spiral Arm in the Fourth Quadrant of the Milky Way},
  author={N. McClure-Griffiths and J. Dickey and B. Gaensler and A. J. G. ATNF-CSIRO and U. Minnesota and H. CfA and U. O. Sydney},
  journal={The Astrophysical Journal},
  year={2004},
  volume={607}
}
  • N. McClure-Griffiths, J. Dickey, +4 authors U. O. Sydney
  • Published 2004
  • Physics
  • The Astrophysical Journal
  • Using data from the Southern Galactic Plane Survey, we present a possible distant spiral arm in the fourth quadrant of the Milky Way. The very distinct and cohesive feature can be traced for over 70° as the most extreme positive velocity feature in the longitude-velocity diagram. The feature is at a Galactic radius between 18 and 24 kpc and appears to be the last major structure before the end of the H I disk. We compare the feature with a Galactic spiral model and show that it is well… CONTINUE READING
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