Driving a Gaseous Nuclear Spiral Inside the Inner LindBlad Resonance

Details Driving a Gaseous Nuclear Spiral Inside the Inner LindBlad Resonance Driving a Gaseous Nuclear Spiral Inside the Inner LindBlad Resonance

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ap%26ss.276..707e&link_type=abstract

Astrophysics and Space Science, v. 276, Issue 2/4, p. 707-714 (2001).

Astronomy and Astrophysics

Astrophysics

Scientific paper

We model grand-design two-arm spiral structure, recently detected in a number of disc galaxies in the near infrared. We explain the observed continuity between the nuclear and kpc-scale spiral structures and the low arm-interarm contrast, using density-wave theory. We find that nuclear spiral arms form within a range of central mass concentrations and sound speeds in the gas and investigate the allowed parameter space.

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