Driving a Gaseous Nuclear Spiral Inside the Inner LindBlad Resonance
Authors: Englmaier, P.; Shlosman, I.
Source: Astrophysics and Space Science, Volume 276, Numbers 2-4, 2001 , pp. 707-714(8)
Abstract: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.
Document Type: Regular Paper
Affiliations: Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055, U.S.A.
Publication date: 2001