The Virgo High-Resolution CO Survey: II. Rotation Curves and Dynamical Mass Distributions

@article{Sofue2003TheVH,
  title={The Virgo High-Resolution CO Survey: II. Rotation Curves and Dynamical Mass Distributions},
  author={Yoshiaki Sofue and Jin Koda and Hiroyuki Nakanishi and Sachiko Onodera},
  journal={Publications of the Astronomical Society of Japan},
  year={2003},
  volume={55},
  pages={59-74}
}
Based on a high-resolution CO survey of Virgo spirals with the Nobeyama Millimeter-wave Array, we determined the dynamical centers using velocity fields, and derived position–velocity diagrams (PVDs) along the major axes of the galaxies across their dynamical centers. We applied a new iteration method to derive rotation curves (RCs), which reproduce the observed PVDs. The obtained high-accuracy RCs generally show a steep rise in the central ∼100 to 200pc regions, followed by flat rotation in… Expand

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