The Unified Scheme of BL Lac Objects and the K-Band Hubble Diagram

Details The Unified Scheme of BL Lac Objects and the K-Band Hubble Diagram The Unified Scheme of BL Lac Objects and the K-Band Hubble Diagram

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ap%26ss.253..275f&link_type=abstract

Astrophysics and Space Science, Volume 253, Issue 2, pp.275-284

Astronomy and Astrophysics

Astrophysics

5

Scientific paper

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 al. (1993) and Owen, Ledlow and Keel (1996).

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