The Optical Properties of Variations for Bl Lac Object PKS 0735+178
Source: Astrophysics and Space Science, Volume 249, Number 2, 1997 , pp. 269-277(9)
Abstract:The long-term variabilities of PKS 0735+178 in UBV bands have been shown and discussed by means of the methods of period analysis and correlation analysis. The results show that there is a strong variation period of 14.42 years in B band, the variations in optical UBV bands are closely correlated with no delay, and the spectral shape is associated with the brightness of the source.
Document Type: Regular Paper
Affiliations: 1: Young Astronomer Center, Beijing Astronomical Observatory, Beijing, China 2: Center for Astrophysics, Department of Physics, Guangzhou Normal University, Guangzhou 510400, China 3: Yunnan Observatory, Chinese Academy of Sciences, China
Publication date: 1997-01-01