ON THE ROTATION SPEED OF THE MILKY WAY DETERMINED FROM H i EMISSION

@article{Reid2016ONTR,
  title={ON THE ROTATION SPEED OF THE MILKY WAY DETERMINED FROM H i EMISSION},
  author={Mark J. Reid and Thomas M. Dame},
  journal={The Astrophysical Journal},
  year={2016},
  volume={832}
}
  • M. ReidT. Dame
  • Published 12 August 2016
  • Physics
  • The Astrophysical Journal
The circular rotation speed of the Milky Way at the solar radius, Θ0, has been estimated to be 220 km s−1 by fitting the maximum velocity of H i emission as a function of Galactic longitude. This result is in tension with a recent estimate of Θ0 = 240 km s−1, based on Very Long Baseline Interferometry (VLBI) parallaxes and proper motions from the BeSSeL and VERA surveys for large numbers of high-mass star-forming regions across the Milky Way. We find that the rotation curve best fitted to the… 
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