Further evidence for large intrinsic redshifts

被引:17
作者
Bell, MB [1 ]
机构
[1] Natl Res Council Canada, Herzberg Inst Astrophys, Ottawa, ON K1A 0R6, Canada
关键词
galaxies : distances and redshifts; galaxies : individual (NGC 1068);
D O I
10.1086/338272
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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 strongly suggest 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 x 10(6) yr and with very modest velocities [line-of-sight components similar to(1-2) x 10(4) km s(-1)]. From the age and rotation angle of successive events, the rotation period of the central object is calculated to be similar to10(7) yr, 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.
引用
收藏
页码:705 / 711
页数:7
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