Infrared Variation of BL Lacertae Object PKS 0735+178
Authors: Lin, R.G.; Fan, J.H.
Source: Astrophysics and Space Science, Volume 259, Number 1, 1998 , pp. 67-75(9)
Abstract:In this paper, the long-term ( about 20 years) near-infrared data have been compiled from the published literature for BL Lac object PKS 0735+178; The light curve in the infrared (JHK) bands have been presented; The maximum variations of Δ J=2m .47, Δ H=2m .30, and Δ K = 2m.40, and color indices of J- H=0.86 ± 0.11, J- K=1.71 ± 0.16, and H-K = 0.86 ± 0.12 have been obtained from the data. It is found that the spectrum changes with the brightness of the source in the infrared bands; The variations in the optical and infrared bands are found to be correlated suggesting that the emission mechanisms in the two bands are associated.
Document Type: Regular Paper
Affiliations: Center for Astrophysics, Guangzhou Normal University, Guangzhou 510400, China, E-mail: email@example.com
Publication date: January 1, 1998