NUMERICAL MODELLING OF GAS DYNAMIC STRUCTURES IN SPIRAL GALAXIES

Автор(и)

  • A. Lugovskiy Keldysh Institute of Applied Mathematics, Russian Federation
  • E. Filistov Keldysh Institute of Applied Mathematics, Russian Federation

DOI:

https://doi.org/10.18524/1810-4215.2013.26.83193

Ключові слова:

numerical modeling, spiral galaxies, gas- dynamic structures, shock waves, contact discontinuities

Анотація

Observations show that in the global morphology of spiral galaxies appear and form multi-scale features that are embedded in a complex complete picture of the galaxy. The origin and nature of the observed heterogeneity of the global spiral pattern of galaxies are not firmly established at this time. Based on the numerical simulation a possible new mechanism of appearance and formation in the two-armed global spiral galaxies’ morphology of a number of gas-dynamic elements similar to each other in shape and independent in brightness is analyzed. Numerical simulation of unsteady gas-dynamic processes occurring under the influence of an external gravitational field is done. It is shown that as a result of the nonlinear supersonic interaction of occurring spiral formations with the flow of the matter features with hydrodynamic nature are appeared, with modeling results well matching with the observations.

Посилання

Chernin A.D.: 2002, AApTr, 21, 1.

Zwicky F.: 1957, Morphological Astronomy, Springer, Berlin.

Sandage A.: 1961, The Hubble Atlas of Galaxies, Carnegie Inst., Washington, DC.

Vorontsov-Vel'yaminov B.A.: 1978, Extragalactic Astronomy, Moscow: Nauka.

Elmegreen B.G., Elmegreen D.M.: 1984, Astrophys. J. Suppl., 54, 127.

Sandage A., Bedke J.: 1994, The Carnegie Atlas of Galaxies, Carnegie Inst., Washington, DC.

Block D.L., Bertin G., Stockman A. et al.: 1994, Astron. Astrophys., 288, 365.

Block D.L., Puerari I.: 1999, Astron. Astrophys., 342, 627. Block D.L.,

Puerari I., Takamiya M. et al.: 2001, Astron. Astrophys., 371, 393.

Zhang X., Buta R. J.: 2012, arXiv:1012.0277v2 [astroph.GA].

Block D.L., Wainscoat R.J.: 1991, Nature, 353, 48. Landau L.D., Lifshitz E.M.: 1979, Fluid Mechanics, Oxford: Pergamon Press.

Lugovskii A.Yu., Chechetkin V.M.: 2012, Astron. Rep., 56, 96.

Abakumov M.V., Mukhin S.I., Popov Yu.P., Chechetkin V.M.: 1996, Astron. Rep., 40, 366.

Морозов А.Г., Хоперсков А.В.: 2005, Физика дисков, Волгоград: Изд-во ВолГУ.

Toomre A.: 1964, Astrophys. J., 139, 1217.

Velikhov E.P., Lugovskii A.Yu., Mukhin S.I. et al.: 2007, Astron. Rep., 51, 154.

Lugovskii A.Yu., Mukhin S.I., Popov Yu.P., Chechetkin V.M.: 2008, Astron. Rep., 52, 811.

Filistov E.A.: 2012, Astron. Rep., 56, 9.

Khoperskov A.V., Khrapov S.S., Nedugova E.A.: 2003, Astron. Lett., 29, 246.

Chernin A.D.: 1999, Mont. Not. Roy. Astron. Soc., 308, 321. Chernin A.D.: 2000, MNLet, 318, 201.

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Опубліковано

2013-11-15

Номер

Том 26 № 2 (2013)

Розділ

Статті

Ліцензія

Авторське право (c) 2013 Odessa Astronomical Publications

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Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року