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Uspekhi Fizicheskikh Nauk, 1974, Volume 112, Number 2, Pages 275–308
DOI: https://doi.org/10.3367/UFNr.0112.197402c.0275
(Mi ufn10136)
 

This article is cited in 30 scientific papers (total in 30 papers)

REVIEWS OF TOPICAL PROBLEMS

The structure of spiral galaxies

L. S. Marochnik, A. A. Suchkov

Rostov-on-Don State University
Abstract: Chapter I (the Introduction) formulates the problem of the spiral structure. A survey of recent observational data on the structure of spiral galaxies is given in Chap. II. Data are submitted on the physical composition of the spiral arms, the distribution of the stellar and gaseous constituents of the galaxies, and the physical state of the interstellar medium. Chapter III deals with the wave theory of spiral structure. In the contemporary conception, the spiral arms are waves propagating in the galaxy at frequencies determined by some exciting mechanism (a generator), with their wave number determined by the dispersion properties of the galaxy. In this approach, the speed of rotation of the spiral pattern, which equals the frequency divided by the number of arms, does not depend on the distance to the center of the galaxy; this eliminates the problem of the twisting of the spiral arms by differential rotation. The conclusions of the wave theory are discussed, and a dispersion equation is given for the spiral structure of a galaxy. The problem of generation and maintenance of the sprial pattern is discussed. Numerical galaxy-modeling experiments are examined in Chap. IV. These experiments point to the formation of spiral structures of wave nature in disciform systems of gravitating particles. Critical remarks concerning the numerical experiments are offered. The Conclusion (Chap. V) discusses arguments for and against the wave theory. It is noted that this theory explains many of the observed facts and that many of its predictions have also been confirmed by observations.
English version:
Physics–Uspekhi, 1974, Volume 17, Issue 1, Pages 85–102
DOI: https://doi.org/10.1070/PU1974v017n01ABEH004318
Document Type: Article
UDC: 523.11
PACS: 10.1070/PU1974v017n01ABEH004318
Language: Russian
Citation: L. S. Marochnik, A. A. Suchkov, “The structure of spiral galaxies”, UFN, 112:2 (1974), 275–308; Phys. Usp., 17:1 (1974), 85–102
Citation in format AMSBIB
\Bibitem{MarSuc74}
\by L.~S.~Marochnik, A.~A.~Suchkov
\paper The structure of spiral galaxies
\jour UFN
\yr 1974
\vol 112
\issue 2
\pages 275--308
\mathnet{http://mi.mathnet.ru/ufn10136}
\crossref{https://doi.org/10.3367/UFNr.0112.197402c.0275}
\transl
\jour Phys. Usp.
\yr 1974
\vol 17
\issue 1
\pages 85--102
\crossref{https://doi.org/10.1070/PU1974v017n01ABEH004318}
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  • https://www.mathnet.ru/eng/ufn/v112/i2/p275
  • This publication is cited in the following 30 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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