The case of NGC 1365

Details The case of NGC 1365 The case of NGC 1365

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991baicz..42..192k&link_type=abstract

Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 42, no. 3, June 1991, p. 192-199.

Astronomy and Astrophysics

Astronomy

1

Barred Galaxies, Galactic Rotation, Radial Velocity, Galactic Structure, Interstellar Matter

Scientific paper

Motions in the strong-bar galaxy NGC 1365 are analyzed with the radial velocities published by Joersaeter et al. (1984). Inside the bar the highly elliptical streamlines are aligned with the major axis. Further out the less elliptical streamlines are inclined to the major axis at 10-30 degrees. The residual velocity dispersion between 15 and 25 km/s is much less than that found earlier. Some large residuals near the bar end may be due to the chaotic orbits predicted by Pfenniger (1984). However, the conclusion suffers from many gaps in the data coverage of the galactic plane. Additional observations in some key regions of NGC 1365 are needed.

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