The S(c) spectrum machine to visualize the motion in galaxies

Details The S(c) spectrum machine to visualize the motion in galaxies The S(c) spectrum machine to visualize the motion in galaxies

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007an....328..556c&link_type=abstract

Astronomische Nachrichten, Vol.328, Issue 6, p.556

Astronomy and Astrophysics

Astronomy

4

Galaxies: Kinematics And Dynamics

Scientific paper

The behavior of the orbits in a galaxy model composed of an harmonic core and a strong bar potential is studied. Numerical calculations show that a large number of orbits display chaotic motion. These orbits are low angular momentun orbits. The percentage of chaotic orbits increases as the angular velocity of the system increases or the strength of the harmonic term decreases. A new dynamical parameter, the S(c) spectrum, is introduced and used to detect the island motion and the evolution of the sticky regions. Comparison to previously obtained results reveals the leading role of the new spectrum.

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