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Astronomy Letters

, Volume 45, Issue 6, pp 331–340 | Cite as

Galactic Rotation Based on OB Stars from the Gaia DR2 Catalogue

  • V. V. BobylevEmail author
  • A. T. Bajkova
Article

Abstract

We have studied a sample containing ~6000 OB stars with proper motions and trigonometric parallaxes from the Gaia DR2 catalogue. The following parameters of the angular velocity of Galactic rotation have been found: Ω0 = 29.70 ± 0.11 km s-1 kpc-1, Ω'0 = -4.035 ± 0.031 km s-1 kpc-2, and Ω 0 = 0.620 ± 0.014 km s-1 kpc-3. The circular rotation velocity of the solar neighborhood around the Galactic center is V0 = 238 ± 5 km s-1 for the adopted Galactocentric distance of the Sun R0 = 8.0 ± 0.15 kpc. The amplitudes of the tangential and radial velocity perturbations produced by the spiral density wave are fθ = 4.4 ± 1.4 kms-1 and fR = 5.1 ± 1.2 kms-1, respectively; the perturbation wavelengths are λθ = 1.9 ± 0.5 kpc and λR = 2.1 ± 0.5 kpc for the adopted four-armed spiral pattern. The Sun's phase in the spiral density wave is χ = -178° ± 12°.

Keywords

OB stars Galactic rotation spiral density wave 

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Notes

Acknowledgements

We are grateful to the referee for useful remarks that contributed to an improvement of the paper.

References

  1. 1.
    T. Antoja, A. Helmi, M. Romero-Gomez, D. Katz, C. Babusiaux, R. Drimmel, D. W. Evans, F. Figueras, et al., Nature (London, U.K.) 561, 360 (2018).ADSCrossRefGoogle Scholar
  2. 2.
    F. Arenou, X. Luri, C. Babusiaux, C. Fabricius, A. Helmi, T. Muraveva, A. C. Robin, F. Spoto, et al. (Gaia Collab.), Astron. Astrophys. 616, 17 (2018).CrossRefGoogle Scholar
  3. 3.
    A. T. Bajkova and V. V. Bobylev, Astron. Lett. 38, 549 (2012).ADSCrossRefGoogle Scholar
  4. 4.
    V. V. Bobylev, Astron. Lett. 45, 10 (2019).ADSCrossRefGoogle Scholar
  5. 5.
    V. V. Bobylev and A. T. Bajkova, Mon. Not. R. Astron. Soc. 437, 1549 (2014).ADSCrossRefGoogle Scholar
  6. 6.
    V. V. Bobylev and A. T. Bajkova, Mon. Not. R. Astron. Soc. 447, L50 (2015).ADSCrossRefGoogle Scholar
  7. 7.
    V. V. Bobylev and A. T. Bajkova, Astron. Lett. 44, 184 (2018a).ADSCrossRefGoogle Scholar
  8. 8.
    V. V. Bobylev and A. T. Bajkova, Astron. Lett. 44, 675 (2018b).ADSGoogle Scholar
  9. 9.
    V. V. Bobylev and A. T. Bajkova, Astron. Lett. 45, 109 (2019).ADSCrossRefGoogle Scholar
  10. 10.
    A. G. A. Brown, A. Vallenari, T. Prusti, J. de Bruijne, F. Mignard, R. Drimmel, et al. (Gaia Collab.), Astron. Astrophys. 595, 2 (2016).Google Scholar
  11. 11.
    A. G. A. Brown, A. Vallenari, T. Prusti, J. de Bruijne, C. Babusiaux, C. A. L. Bailer-Jones, M. Biermann, D. W. Evans, et al. (Gaia Collab.), Astron. Astrophys. 616, 1 (2018).Google Scholar
  12. 12.
    W. B. Burton, Astron. Astrophys. 10, 76 (1971).ADSGoogle Scholar
  13. 13.
    J. Byl and M. W. Ovenden, Astrophys. J. 225, 496 (1978).ADSCrossRefGoogle Scholar
  14. 14.
    T. Camarillo, M. Varun, M. Tyler, and R. Bharat, Publ. Astron. Soc. Pacif. 130, 4101 (2018).CrossRefGoogle Scholar
  15. 15.
    T. Cantat-Gaudin, C. Jordi, A. Vallenari, A. Bra-gaglia, L. Balaguer-Nuñez, C. Soubiran, et al., Astron. Astrophys. 618, 93 (2018).CrossRefGoogle Scholar
  16. 16.
    A. K. Dambis, L. N. Berdnikov, Yu. N. Efremov, A. Yu. Knyazev, A. S. Rastorguev, E. V Glushkova, V. V. Kravtsov, D. G. Turner, D. J. Majaess, and R. Sefako, Astron. Lett. 41, 489 (2015).ADSCrossRefGoogle Scholar
  17. 17.
    E. Franciosini, G. G. Sacco, R. D. Jeffries, Dami-ani, V. Roccatagliata, D. Fedele, and S. Randich, Astron. Astrophys. 616, 12 (2018).ADSCrossRefGoogle Scholar
  18. 18.
    Y. M. Georgelin and Y. P. Georgelin, Astron. Astrophys. 49, 57 (1976).ADSGoogle Scholar
  19. 19.
    R. de Grijs and G. Bono, Astrophys. J. Suppl. Ser. 232, 22 (2017).ADSCrossRefGoogle Scholar
  20. 20.
    A. Helmi, F. van Leeuwen, P. J. McMillan, D. Mas-sari, T. Antoja, A. C. Robin, L. Lindegren, U. Bas-tian, et al. (Gaia Collab.), Astron. Astrophys. 616, 12 (2018).Google Scholar
  21. 21.
    M. Kounkel, K. Covey, G. Suárez, C. Román-Zúñiga, J. Hernandez, K. Stassun, K. O. Jaehnig, E. D. Feigelson, et al., Astron. J. 156, 84 (2018).ADSCrossRefGoogle Scholar
  22. 22.
    C. C. Lin and F. H. Shu, Astrophys. J. 140, 646 (1964).ADSMathSciNetCrossRefGoogle Scholar
  23. 23.
    L. Lindegren, J. Hernandez, A. Bombrun, S. Klioner, U. Bastian, M. Ramos-Lerate, A. de Torres, H. Stei-delmuller, et al. (Gaia Collab.), Astron. Astrophys. 616, 2 (2018).CrossRefGoogle Scholar
  24. 24.
    A. V. Loktin and M. E. Popova, Astrophys. Bull. 74 (2019, in press).Google Scholar
  25. 25.
    J. Maiz-Apellaniz, Astron. J. 121, 2737 (2001).ADSCrossRefGoogle Scholar
  26. 26.
    T. Muraveva, H. E. Delgado, G. Clementini, L. M. Sarro, and Garofalo, Mon. Not. R. Astron. Soc. 481, 1195 (2018).ADSCrossRefGoogle Scholar
  27. 27.
    M. H. Pinsonneault, Y. P. Elsworth, J. Tayar, A. Serenelli, D. Stello, J. Zinn, S. Mathur, R. Garcia, et al., Astrophys. J. Suppl. Ser. 239, 32 (2018).ADSCrossRefGoogle Scholar
  28. 28.
    A. S. Rastorguev, M. V. Zabolotskikh, A. K. Dambis, N. D. Utkin, V. V. Bobylev, and A. T. Bajkova, Astro-phys. Bull. 72, 122 (2017).ADSCrossRefGoogle Scholar
  29. 29.
    A. G. Riess, S. Casertano, W. Yuan, L. Macri, B. Buc-ciarelli, M. G. Lattanzi, J. W. MacKenty, J. B. Bowers, et al., Astrophys. J. 861, 126 (2018).ADSCrossRefGoogle Scholar
  30. 30.
    V. Roccatagliata, G. G. Sacco, E. Franciosini, and S. Randich, Astron. Astrophys. 617, L4 (2018).ADSCrossRefGoogle Scholar
  31. 31.
    D. Russeil, Astron. Astrophys. 397, 133 (2003).ADSCrossRefGoogle Scholar
  32. 32.
    C. Soubiran, T. Cantat-Gaudin, Romero-Gomez, L. Casamiquela, C. Jordi, A. Vallenari, T. Antoja, L. Balaguer-Núñez, et al., Astron. Astrophys. 619, 155 (2018).CrossRefGoogle Scholar
  33. 33.
    K. G. Stassun and G. Torres, Astrophys. J. 862, 61 (2018).ADSCrossRefGoogle Scholar
  34. 34.
    J. P. Vallée, Astrophys. Space Sci. 362, 79 (2017a).ADSCrossRefGoogle Scholar
  35. 35.
    J. P. Vallée, New Astron. Rev. 79, 49 (2017b).ADSCrossRefGoogle Scholar
  36. 36.
    Y. Xu, S. B. Bian, M. J. Reid, J. J. Li, B. Zhang, Q. Z. Yan, T. M. Dame, K. M. Menten, et al., Astron. Astrophys. 616, L15 (2018).ADSCrossRefGoogle Scholar
  37. 37.
    L. N. Yalyalieva, A. A. Chemel', E. V. Glushkova, A. K. Dambis, and A. D. Klinichev, Astrophys. Bull. 73, 335 (2018).ADSCrossRefGoogle Scholar
  38. 38.
    M. V. Zabolotskikh, A. S. Rastorguev, and A. K. Dambis, Astron. Lett. 28, 454 (2002).ADSCrossRefGoogle Scholar
  39. 39.
    E. Zari, H. Hashemi, A. G. A. Brown, K. Jardine, and P. T. de Zeeuw, Astron. Astrophys. 620, 172 (2018).ADSCrossRefGoogle Scholar
  40. 40.
    J. C. Zinn, M. H. Pinsonneault, D. Huber, and D. Stello, arXiv: 1805.02650 (2018).Google Scholar

Copyright information

© Pleiades Publishing, Inc. 2019

Authors and Affiliations

  1. 1.Pulkovo Astronomical ObservatoryRussian Academy of SciencesSt. PetersburgRussia

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