Rotation Curve of the Milky Way from Classical Cepheids

  title={Rotation Curve of the Milky Way from Classical Cepheids},
  author={Przemek Mr{\'o}z and Andrzej Udalski and Dorota M. Skowron and Jan Skowron and Igor Soszyński and Paweł Pietrukowicz and Michał K. Szymański and Radosław Poleski and Szymon Kozłowski and Krzysztof Ulaczyk},
  journal={The Astrophysical Journal},
Flat rotation curves of spiral galaxies are considered as an evidence for dark matter, but the rotation curve of the Milky Way is difficult to measure. Various objects were used to track the rotation curve in the outer parts of the Galaxy, but most studies rely on incomplete kinematical information and inaccurate distances. Here, we use a sample of 773 Classical Cepheids with precise distances based on mid-infrared period-luminosity relations coupled with proper motions and radial velocities… 

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