Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.318l...7c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 318, Issue 1, pp. L7-L10.
Astronomy and Astrophysics
Astronomy
3
Galaxies: Nuclei, Galaxies: Spiral
Scientific paper
This Letter reports the discovery of straight segments of nuclear spiral arms. Hubble Space Telescope images of Seyfert galaxies are used. The morphology of the straight features on scales of few hundred parsecs proves to be similar to the morphology of disc-wide polygonal spirals and rings. This suggests that the straight structures on both nuclear and disc scales may have a common physical nature.
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