Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...292l..51b&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 292, May 15, 1985, p. L51-L55.
Astronomy and Astrophysics
Astrophysics
43
Elliptical Galaxies, Galactic Structure, Interstellar Matter, Stellar Motions, Cosmic Dust
Scientific paper
Spectroscopic observations of NGC 5128 show that the stellar component possesses a velocity gradient along its major axis with a total velocity difference of 160 km/s. This velocity, together with a velocity dispersion of 140 km/s, places NGC 5128 among the fast rotating elliptical galaxies. It is found that the motion of the warped dust lane with respect to that of the stars is direct. Prograde motions are also found in the warp of the E4 Anon 0151-498, while observations of a warped dust lane with retrograde motion in the E3.5 NGC 5363 are reported. The conditions under which the warped configurations in these galaxies are transient or stationary are analyzed. The intrinsic shape of these systems is also discussed.
Bertola Francesco
Galletta Giuseppe
Zeilinger Werner W.
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