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Stellar Dynamics and the 3D Structure of Bars

Published online by Cambridge University Press:  12 April 2016

D. Pfenniger
D. Pfenniger*
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland

Abstract

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Recent observational constraints restrict the strict applicability of stellar dynamics in spirals to a few rotation periods. However, stellar dynamics concepts such as periodic orbits are invaluable for understanding the various dynamical processes occurring during much more periods. A distinction of two instability types in stellar systems is pointed out, the first one being well illustrated by the bar instability, and the second one by the bar bending instability. In bars the third dimension brings essential dynamical effects which modify the views about the history of bulges and the spiral secular evolution. Bars may grow, bend, thicken, and dissolve into spheroidal bulges, and spirals may evolve along the Hubble sequence in the sense Sd→Sa. This leads to a much more dynamical picture of isolated galaxies than imagined before.

Type
Part V. Theory of Barred Galaxies I.
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 273 - 285
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

Arnold, V.I. 1989, Mathematical Methods of Classical Mechanics, Springer Verlag CrossRefGoogle Scholar
Binney, J. & Tremarne, S. 1987, Galactic Dynamics, Princeton: Princeton University Press Google Scholar
Combes, F. & Sanders, R.H. 1981, A&A, 96, 164 Google Scholar
Combes, F., Debbasch, F., Friedli, D., & Pfenniger, D. 1990, A&A, 233, 82 Google Scholar
Friedli, D. & Pfenniger, D. 1990, in Bulges of Galaxies, ESO Conf. and Workshop Proc, Jarvis, B.J., Tendrup, D.M., 265 Google Scholar
Friedli, D. & Pfenniger, D. 1991, in Dynamics of Galaxies and Molecular Clouds Distribution, Casoli, F. & Combes, F., Dordrecht: Kluwer, 362 Google Scholar
Hasan, H. & Norman, C.A. 1990, ApJ, 361, 69 CrossRefGoogle Scholar
Hasan, H., Pfenniger, D., & Norman, C.A. 1993, ApJ, 409, 91 CrossRefGoogle Scholar
Hohl, F. 1971, ApJ, 168, 343 Google Scholar
Kennicutt, R.C. 1989, ApJ, 344, 685 Google Scholar
Kormendy, J. 1982, in Morphology and Dynamics of Galaxies, Martinet, L. & Mayor, M., Sauverny: Geneva Obs., 113 Google Scholar
Leitherer, C. & Heckman, T. 1995, ApJS, 96, 9 CrossRefGoogle Scholar
Lewis, J.R. & Freeman, K.C. 1989, AJ, 97, 139 CrossRefGoogle Scholar
Merritt, D. & Sellwood, J.A. 1994, ApJ, 425, 551 CrossRefGoogle Scholar
Miller, R.H. & Smith, B.F. 1979, ApJ, 227, 785 Google Scholar
Pfenniger, D. 1984, A&A, 134, 373 Google Scholar
Pfenniger, D. 1985, A&A, 150, 112 Google Scholar
Pfenniger, D. 1987, A&A, 180, 79 Google Scholar
Pfenniger, D. 1990, A&A, 230, 55 Google Scholar
Pfenniger, D. 1991, in Dynamics of Disk Galaxies, Sundelius, B., Göteborg: Chalmers Univ. Press, 191 Google Scholar
Pfenniger, D. 1992, in Physics of Nearby Galaxies, Thuan, T.X., Balkowski, C., & Thanh Van, J.T., Ed. Frontières, , 527 Google Scholar
Pfenniger, D. 1993, in Galactic Bulges, Dejonghe, H. & Habing, H.J., Dordrecht: Kluwer, 387 Google Scholar
Pfenniger, D. & Norman, C. 1990, ApJ, 363, 391 Google Scholar
Pfenniger, D. & Friedli, D. 1991, A&A, 252, 75(PF91)Google Scholar
Pfenniger, D., Combes, F., & Martinet, L. 1994, A&A, 285, 79 Google Scholar
Quirk, W.J. 1972, ApJ, 176, L9 Google Scholar
Raha, N., Sellwood, J.A., James, R.A., & Kahn, F.D. 1991, Nature, 352, 411 Google Scholar
Rich, R.M. 1992, in Physics of Nearby Galaxies, Thuan, T.X., Balkowski, C., & >Thanh Van, J.T., Ed. Frontières, , 153 Google Scholar
Sellwood, J.A. & Wilkinson, A. 1993, Rep. Progr. Phys., 56, 173 Google Scholar
Toomre, A. & Kalnajs, A.J. 1991, in Dynamics of Disk Galaxies, Sundelius, B., Göteborg: Chalmers Univ. Press, 341 Google Scholar