Nuclear Spirals in Nearby Galaxies

Details Nuclear Spirals in Nearby Galaxies Nuclear Spirals in Nearby Galaxies

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jkas...38..121a&link_type=abstract

Journal of the Korean Astronomical Society, vol. 38, no. 2, pp.121-124

Astronomy and Astrophysics

Astronomy

1

Galaxies: Evolution, Galaxies:Nuclei, Galaxies: Structure, Method, Numerical

Scientific paper

High resolution images of the nuclear regions of nearby galaxies show that nuclear spirals are preponderant in normal galaxies as well as in active galaxies. These nuclear spirals, especially the grand-design nuclear spirals are found to be formed by the gas flow driven by the bar. Hydrodynamical simulations exploring a wide range of parameter space show that the morphology of nuclear spirals depends not only on the inner dynamics but on the global dynamics resulting from the global mass distribution of galaxies. Thus, the nuclear morphology can be a diagnostic tool for the inner dynamics of galaxies when the global mass distribution is taken into account.

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