Peculiarities in the optical variability of the galaxy NGC 4151
Journal Article
·
· Sov. Astron. Lett. (Engl. Transl.); (United States)
OSTI ID:5080229
Photographic and photoelectric observations of the optical variability of the nucleus of the Seyfert galaxy NGC 4151 are analyzed. The presence of a quasiperiodic 126/sup d/ component is confirmed. The 126/sup d/ period varies in cycles of roughly-equal20 yr. If these fluctuations represent orbital motion about a central body (such as a supermassive black hole), its mass would be roughly-equal10/sup 8/ M/sub sun/ and the orbital velocity would be roughly-equal10/sup 4/ km/sec.
- Research Organization:
- Southern Station, Shternberg Astronomical Institute, Nauchnyi, Crimea
- OSTI ID:
- 5080229
- Journal Information:
- Sov. Astron. Lett. (Engl. Transl.); (United States), Vol. 7:6
- Country of Publication:
- United States
- Language:
- English
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