Advertisement

Astrophysical Bulletin

, Volume 74, Issue 3, pp 270–276 | Cite as

Kinematics of Open Star Clusters Based on the Data of the New Version of the “Homogeneous Catalog of Open Cluster Parameters”

  • A. V. LoktinEmail author
  • M. E. PopovaEmail author
Article

Abstract

We investigate some aspects of Galactic disc kinematics based on the data on open clusters from the current version of “The Homogeneous Catalog of the Main Parameters of Open Star Clusters” and from Gaia DR2. Based on the radial velocity and proper motion data for the clusters we determine the angular velocity of the Sun in the Galaxy as Ω0 = 25.6 ± 1.2 km s-1 kpc-1. A new approximation of the Galactic rotation curve by a polynomial in inverse powers of galactocentric distances is constructed. We consider the influence of spiral density waves on the smoothed velocity field of the Galactic disc. The radial fR = 4.6 ± 0.7 km s-1 and tangential fϑ = 1.1 ± 0.4 km s-1 amplitudes of the velocity field distortion are estimated from the radial dependences of the residual spatial velocity components of the clusters.

Key words

Galaxy kinematics and dynamics-open clusters and associations general 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Notes

Funding

This work was supported in part by the Ministry of Education and Science (the basic part of the State assignment, RK no. AAAA-A17-117030310283-7) and by the Act no. 211 of the Government of the Russian Federation, agreement no. 02.A03.21.0006.

References

  1. 1.
    A. V. Loktin and M. E. Popova, Astrophysical Bulletin 72, 257 (2017).ADSCrossRefGoogle Scholar
  2. 2.
    Gaia Collaboration, A. G. A. Brown, A. Vallenari, et al., Astron. and Astrophys. 616, A1 (2018).CrossRefGoogle Scholar
  3. 3.
    M. É. Popova and A. V. Loktin, Astronomy Letters 31, 663 (2005).ADSCrossRefGoogle Scholar
  4. 4.
    G. Kordopatis, G. Gilmore, M. Steinmetz, et al., Astron. J. 146, 134 (2013).ADSCrossRefGoogle Scholar
  5. 5.
    T. Cantat-Gaudin, C. Jordi, A. Vallenari, et al., VizieR Online Data Catalog 361 (2018).Google Scholar
  6. 6.
    A. V. Loktin and G. V. Beshenov, Astronomy Reports 47, 6 (2003).ADSCrossRefGoogle Scholar
  7. 7.
    T. P. Gerasimenko, Astronomy Reports 48, 103 (2004).ADSCrossRefGoogle Scholar
  8. 8.
    M. E. Popova, Astronomische Nachrichten 334, 756 (2013).ADSCrossRefGoogle Scholar
  9. 9.
    Y. Sofue, Mass Distribution and Rotation Curve in the Galaxy (2013), p. 985.Google Scholar
  10. 10.
    A. V. Loktin and M. E. Popova, Astronomical and Astrophysical Transactions 27, 379 (2012).ADSGoogle Scholar
  11. 11.
    M. W. Feast and M. Shuttleworth, Monthly Notices Royal Astron. Soc. 130, 243 (1965).CrossRefGoogle Scholar
  12. 12.
    D. Russeil, A. Zavagno, P. Mège, et al., Astron. and Astrophys. 601, L5 (2017).ADSCrossRefGoogle Scholar
  13. 13.
    M. E. Popova and A. V. Loktin, Astronomy Letters 31, 171 (2005).ADSCrossRefGoogle Scholar
  14. 14.
    M. É. Popova, Astronomy Letters 32, 244 (2006).ADSCrossRefGoogle Scholar
  15. 15.
    Y. N. Mishurov and I. A. Zenina, Astron. and Astrophys. 341, 81 (1999).ADSGoogle Scholar
  16. 16.
    A. M. Mel’nik, A. K. Dambis, and A. S. Rastorguev, Astronomy Letters 27, 521 (2001).ADSCrossRefGoogle Scholar
  17. 17.
    M. V. Zabolotskikh, A. S. Rastorguev, and A. K. Dambis, Astronomy Letters 28, 454 (2002).ADSCrossRefGoogle Scholar
  18. 18.
    V. V. Bobylev, A. T. Bajkova, and A. S. Stepanishchev, Astronomy Letters 34, 515 (2008).ADSCrossRefGoogle Scholar
  19. 19.
    V. V. Bobylev and A. T. Bajkova, Monthly Notices Royal Astron. Soc. 441, 142 (2014).ADSCrossRefGoogle Scholar
  20. 20.
    M. E. Popova and A. V. Loktin, Astronomy Letters 34, 551 (2008).ADSCrossRefGoogle Scholar
  21. 21.
    V. V. Bobylev and A. T. Bajkova, Monthly Notices Royal Astron. Soc. 437, 1549 (2014).ADSCrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Kourovka astronomical observatoryUral Federal UniversityEkaterinburgRussia

Personalised recommendations