Title: A new way to locate corotation resonances in spiral galaxies
Abstract: view Abstract Citations (100) References (43) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A New Way to Locate Corotation Resonances in Spiral Galaxies Canzian, Blaise Abstract Kinematical information over the entire disk of a spiral galaxy can be used in a new way to locate the position of the corotation resonance. The spiral residual velocity field has a global appearance that is distinctly different inside and outside the corotation resonance radius. Inside the corotation radius, the spiral velocity field shows a single spiral feature (that is, a single approaching-receding "spiral arm" pair). Outside the corotation radius, there are three spiral features (approaching-receding arm pairs). The corotation radius is located where this morphological change occurs. The effect is a consequence of geometric phase. It should apply generally, regardless of the functional form of the velocity perturbation due to a spiral arm, if the spiral structure is wave-based. Publication: The Astrophysical Journal Pub Date: September 1993 DOI: 10.1086/173095 Bibcode: 1993ApJ...414..487C Keywords: Corotation; Galactic Rotation; Galactic Structure; Spiral Galaxies; Astronomical Models; Barred Galaxies; Density Wave Model; H I Regions; Velocity Distribution; Astrophysics; GALAXIES: KINEMATICS AND DYNAMICS; GALAXIES: STRUCTURE full text sources ADS | data products SIMBAD (26) NED (25)