Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aj....111.1065x&link_type=abstract
Astronomical Journal v.111, p.1065
Astronomy and Astrophysics
Astronomy
33
Hbl Lacertae Objects: General, X-Rays: Galaxies, Galaxies: Photometry
Scientific paper
The optical (BVRI) monitoring data covering 5 years for 12 x-ray-selected BL Lac objects are presented in this paper. The main results are: (1) If 0317+178 has shown a variability of 0.53 mag in R band on a time scale of about 1.93 days. (2) A variability of 0.58 mag within 5 min was recorded in the V band for H 0548-322. Our results would be valuable to understand the relation between XBLs and RBLs.
Joseph Wang C.-C.
Li Kwok Hung
Liu Keh-Fei
Wang Xiao-Mei
Xie G.-Zh.
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