Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-11-06
Astronomy and Astrophysics
Astrophysics
11 pages with 7 figures, to be published in ApJ
Scientific paper
10.1086/338272
An examination of the positions and redshifts of the compact, QSO-like objects reported near the Seyfert 2 galaxy NGC 1068 has revealed many relationships that suggest strongly that the objects have been ejected from the galaxy. Although some of the same relations have been found for the compact objects near NGC 3516, the higher number of sources near NGC 1068 has resulted in a detailed physical model. The results indicate that the objects have been expelled in at least four similarly structured ejection events from a point near the center of NGC 1068 within the last 6 million years, with very modest velocities between 10,000 and 20,000 km/s. From the age and rotation angle of successive events, the rotation period of the central object is calculated to be approximately 10 million yrs, in good agreement with the nuclear rotation period obtained from kinematic studies of NGC 1068. The large redshifts of the objects cannot be explained by their modest ejection velocities and require an additional, large intrinsic component.
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