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Dynamical explorations of nuclear structures in barred galaxies

Published online by Cambridge University Press:  12 April 2016

J. Anosova  and
G. F. Benedict
J. Anosova
Affiliation:
University of Texas at Austin, Austin, TX 78712, USA
G. F. Benedict
Affiliation:
University of Texas at Austin, Austin, TX 78712, USA

Abstract

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We construct models of a galaxy in order to provide a possible identification of the dynamical processes that lead to the formation of structure observed in galactic nuclei. We assume that the center of our model contains a very massive double black hole, surrounded by relatively low-mass particles - star clusters, gas, and dust complexes. Our previous work (Anosova et al. 1994, 1995) snowed that the dynamical evolution of such a model produces many structures similar to those observed in the nuclei of galaxies, including rings and various types of flows and jets. In such models the ’gravitational slingshot’ effect frequently occurs.

We consider a number of such models with different initial parameters. Comparison of our models with the observed structure of NGC 4314 shows good agreement at one stage of the evolution for certain combinations of initial parameters. The model predicts the velocity field observed in NGC 4314.

Type
Part 3. Numerical Simulations
Information
International Astronomical Union Colloquium , Volume 174: Small Galaxy Groups , 2000 , pp. 261 - 272
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Aarseth, S., Zare, K., 1974, Celest. Mech., 10, 185 Google Scholar
Agekian, T., Anosova, J., 1967. Sov. Astron. J., 44, 1267 Google Scholar
Agekian, T., Anosova, J., 1991. Sov. Astron. J., 68, 1099 Google Scholar
Anosova, J., 1986, Astrophys. Space Sci., 124, 217 Google Scholar
Anosova, J., 1991. Celest. Mech. &Dynam. Astron., 51, 1 Google Scholar
Anosova, J. and Zavalov, . 1989, Sov. Astron. J., 66, 152 Google Scholar
Anosova, J. and Anandarao, B. 1994, Astrophys. Space Sci., 220, 83 Google Scholar
Anosova, J. and Tanikawa, K. 1995, Astrophys. Space Sci., 234, 191 Google Scholar
Basu, D., Valtonen, M.J., Valtonen, H. and Mikkola, S. 1993, Astron. Astroph. 272, 417 Google Scholar
Benedict, G.F. et al. 1992, AJ, 103, 757 Google Scholar
Benedict, G.F. et al. 1993, AJ, 105, 1369 Google Scholar
Benedict, G.F., Smith, B.J., Kenney, J.D.P., 1996a, AJ, 111, 1861 Google Scholar
Benedict, et al. 1996b, BAAS, 28, 1187 Google Scholar
Binney, J., Tremaine, S. 1987, Galactic Dynamics, Princeton, Princ. Univ. Press Google Scholar
Combes, F., 1993, In: “Physics of Galaxies: Nature or Nurture”. Ed. Balkowski, C., pl37 Google Scholar
Lin, D.N.C. and Saslaw, W.C., 1977, ApJ, 217, 958 Google Scholar
Lin, D.N.C. and Lynden-Bell, D., 1982, MNRAS, 198, 707 Google Scholar
Murai, T. and Fujimoto, M., 1980, Publ. Astron. Soc. Japan, 32, 581 Google Scholar
Sellwood, J.A. 1987, ARA&A, 25, 151 Google Scholar
Sellwood, J.A. 1993, Rep. Prog. Phys., 56, 173 Google Scholar
Toomre, A. and Toomre, J. 1972, ApJ, 178, 623 Google Scholar
Valtonen, M.J. and Byrd, G.G., 1979, ApJ, 230, 655 Google Scholar
Valtonen, M.J. and Byrd, G.G., 1986, ApJ, 303, 523 CrossRefGoogle Scholar
Valtonen, M.J. et al., 1984a, A&A, 143, 182 Google Scholar
Valtonen, M.J. et al., 1984b, ApSS, 107, 209 Google Scholar
Valtonen, M.J. et al., 1985, A&A, 143, 182 Google Scholar
Valtonen, M.J., 1988, Vistas Astron., 32, 23 Google Scholar
Yoshiaki, T., Keiichi, W. 1996, ApJ, 469, 581 Google Scholar