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Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz

IMPACT FACTOR 2018: 0.350

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Volume 24, Issue 2


Galactic Spiral Pattern beyond the Optical Size Induced by the Triaxial Dark Halo

M. Butenko
  • Volgograd State University, Prospekt Universitetskij 100, Volgograd, 400062, Russian Federation
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ A. Khoperskov / S. Khoperskov
  • Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, Milano, I-20133, Italy
  • Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya st. 48, Moscow, 119017, Russian Federation
  • Sternberg Astronomical Institute of Moscow M. V. Lomonosov State University, Universitetskii pr. 13, Moscow, 119992, Russian Federation
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2017-02-18 | DOI: https://doi.org/10.1515/astro-2017-0210


We suggest a possible mechanism for the formation of non-tidal gaseous structures in galactic outskirts. According to recent observations, extended spiral structures are detected beyond the optical radii Ropt in numerous disk galaxies. Such features can be clearly seen in deep HI and UV images (e.g., NGC 3198, NGC 3359, NGC 2841, NGC 3198). We argue, based on our gas-dynamical simulations, that such outer spirals could form as a result of the interaction of the galactic disk with the triaxial host dark matter halo.

Keywords: galaxies: kinematics and dynamics; galaxies: spiral; galaxies: structure


  • Abadi M. G., Navarro J. F., Fardal M. et al. 2010, MNRAS, 407, 435Google Scholar

  • Allgood B., Flores R. A., Primack J. R. et al. 2006, MNRAS, 367, 1781Google Scholar

  • Bertin G., Amorisco N. C. 2010, A&A, 512, A17Google Scholar

  • Bigiel F., Leroy A., Walter F. et al. 2010, AJ, 140, 1194Google Scholar

  • Binney J., Tremaine S. 1987, Galactic Dynamics, Princeton Univ. Press, Princeton, New JerseyGoogle Scholar

  • Boomsma R., Oosterloo T. A., Fraternali F. et al. 2008, A&A, 490, 555Google Scholar

  • Di Cintio A., Brook C. B., Dutton A. A. et al. 2014, MNRAS, 441, 2986Google Scholar

  • Hollenbach D., McKee C. F. 1989, ApJ, 342, 306Google Scholar

  • Khoperskov A. V., Eremin M. A., Khoperskov S. A. et al. 2012, Astronomy Reports, 56, 16Google Scholar

  • Khoperskov A. V., Khoperskov S. A., Zasov A. V. et al. 2013, MNRAS, 431, 1230Google Scholar

  • Khoperskov A. V., Tyurina N. V. 2003, Astronomy Reports, 47, 443Google Scholar

  • Khoperskov S. A., Vasiliev E. O., Khoperskov A. V., Lubimov V. N. 2014, Journal of Physics, Conf. Series, 510, 012011Google Scholar

  • Koribalski B. S., López-Sánchez Á. R. 2009, MNRAS, 400, 1749Google Scholar

  • Radburn-Smith D. J., Roškar R., Debattista V. P. et al. 2012, ApJ, 753, 138Google Scholar

  • Thilker D. A., Bianchi L., Meurer G. et al. 2007, ApJS, 173, 538Google Scholar

  • Valenzuela O., Hernandez-Toledo H., Cano M. et al. 2014, AJ, 147, 27Google Scholar

About the article

Received: 2015-03-25

Accepted: 2015-04-20

Published Online: 2017-02-18

Published in Print: 2015-06-01

Citation Information: Open Astronomy, Volume 24, Issue 2, Pages 119–125, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0210.

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© 2015 M. Butenko et al., published by De Gruyter Open. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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