Disk of the Seyfert galaxy NGC 4151
Spectroscopic observations of the ''bar'' in NGC 4151 show its continuous spectrum to have a large ultraviolet excess and no detectable stellar absorption features. The lambda3727 O ii line in emission leads to line-of-sight velocities for the ends of the bar of 35--55 km s$sup -1$ relative to the nucleus. Analysis of H$alpha$, U, and deep IIIa-J plates indicates that the major axis of this galaxy is in P.A. 26$sup 0$ +- 3/sup $sup 0$/.5 and its angle of inclination to the plane of the sky is 21$sup 0$ +- 5$sup 0$. The most probable interpretation of the observations suggest that both large circular velocities (300--500 km s$sup -1$) and radial streaming out into disk (100--300 km s$sup - 1$) occur near the nucleus, with outward radial streaming of 60--100 km s$sup -1$ occurring out to a distance of 4 kpc in the bar. (AIP)
- Research Organization:
- Department of Astronomy and Astrophysics, Michigan State University, East Lansing
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-33-010176
- OSTI ID:
- 4122669
- Journal Information:
- Astrophys. J., v. 200, no. 3, pp. 567-573, Journal Name: Astrophys. J., v. 200, no. 3, pp. 567-573; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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