1. [Untitled]
- Author
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JH Fan, A Okudaira, Xie GZ(谢光中), and R.G. Lin
- Subjects
Physics ,Superluminal motion ,Active galactic nucleus ,Infrared ,Radio galaxy ,Astrophysics::High Energy Astrophysical Phenomena ,Astronomy ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Redshift ,Space and Planetary Science ,K band ,Blazar ,Astrophysics::Galaxy Astrophysics ,BL Lac object - Abstract
In this paper, the variations of BL Lac objects in the infrared band are given. The relation between infrared magnitude-K and redshift is discussed for BL Lac objects, FRI, and FRII(G) radio galaxies. The results show that the faintest optical and infrared magnitudes are correlated, the BL Lac objects with large infrared variation have large optical variation, and the unified scheme of BL Lac objects should include FRI and FRII(G) radio galaxies, which support the results of Xie et at. (1993) and Owen, Ledlow and Keel (1996).
- Published
- 1997
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