Stochastic Star Formation, Magnetic Fields and the Fine Structure of Spiral Arms

  • J. V. Feitzinger
  • J. Spicker


Spiral arms are not smooth features. The assumption of regularity of spiral arm structures is much more introduced by theoretical concepts and the need for simplification than by observational facts. Star forming activity disturbs and changes any regular spatial structure and the radial and vertical velocity fields. The intermediate scale dynamics (1–2 kpc) organizes locally well defined deviations in velocity space and in the spatial locations of star forming sites. These deviations, i.e. the fine structure of spiral arms, are the result of the interaction of stellar dynamical forces, star forming activity and magnetic fields. The interstellar medium is reshuffeled and stirred by these influences. Here we present some building blocks on the route towards a unifying picture concerning the z-structure of spiral arms and magnetic field configurations.


Molecular Cloud Rotation Curve Galactic Plane Magnetic Field Configuration Dark Cloud 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Feitzinger, J.V., Stüwe, J.A., 1986, Ap. J. 305, 534ADSCrossRefGoogle Scholar
  2. 2.
    Feitzinger, J.V., Stüwe, J.A., 1986, Vistas in Astronomy, in pressGoogle Scholar
  3. 3.
    Ellis, R.S., Axon, D.J., 1978, Ap. Spc. Sci. 54, 425ADSCrossRefGoogle Scholar
  4. 4.
    Feitzinger, J.V., Spicker, J., 1985, Mon. Not. Roy. Astr. Soc. 214, 539ADSGoogle Scholar
  5. 5.
    Spicker, J., Feitzinger, J.V., 1986, Astron. Astrophys. 163, 43ADSGoogle Scholar
  6. 6.
    Feitzinger, J.V., Spicker, J., 1986, Pub. Astr. Soc. Japan 38, 485ADSGoogle Scholar
  7. 7.
    Spicker, J., Feitzinger, J.V., 1984, in Plasma Astrophysics, eds. T.D. Guyenne and J.J. Hunt, ESA SP 207 ( European Space Agency, Paris ), p. 225Google Scholar
  8. 8.
    Sawa, T., Fujimoto, M., 1986, Pub. Astr. Soc. Japan 38, 133ADSGoogle Scholar
  9. 9.
    Sofue, Y., Fujimoto, M., Wielebinski, R., 1986, Ann. Rev. Astron. Astrophys. 23 Google Scholar
  10. 10.
    Chiang, W.H., Elmegreen, B.G., 1982, Bull. Am. Astr. Soc. 14, 655ADSGoogle Scholar
  11. 11.
    Fujimoto, M., Sawa, T., 1986, Pub. Astr. Soc. Japan, in pressGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • J. V. Feitzinger
    • 1
  • J. Spicker
    • 1
  1. 1.Astronomisches InstitutRuhr-Universität BochumBochumFed. Rep. of Germany

Personalised recommendations