Kinematics of Tycho-2 red giant clump stars

@article{Bobylev2009KinematicsOT,
  title={Kinematics of Tycho-2 red giant clump stars},
  author={V. Bobylev and A. Stepanishchev and A. Bajkova and G. Gontcharov},
  journal={Astronomy Letters},
  year={2009},
  volume={35},
  pages={836-849}
}
  • V. Bobylev, A. Stepanishchev, +1 author G. Gontcharov
  • Published 2009
  • Physics
  • Astronomy Letters
  • Based on the Ogorodnikov-Milne model, we analyze the proper motions of 95 633 red giant clump (RGC) stars from the Tycho-2 Catalogue. The following Oort constants have been found: A = 15.9 ± 0.2 km s−1 kpc−1 and B = −12.0±0.2 km s−1 kpc−1. Using 3632 RGC stars with known proper motions, radial velocities, and photometric distances, we show that, apart from the star centroid velocity components relative to the Sun, only the model parameters that describe the stellar motions in the XY plane… CONTINUE READING

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