CCD PHOTOMETRY OF 12 BL-LACERTAE OBJECTS

Authors
XIE GZ ZHANG YH LI KH LIU FK WANG JC WANG XM
Citation
Gz. Xie et al., CCD PHOTOMETRY OF 12 BL-LACERTAE OBJECTS, The Astronomical journal, 111(3), 1996, pp. 1065-1072
Citations number
19
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astronomical journal → ACNP
ISSN journal
00046256
Volume
111
Issue
3
Year of publication
1996
Pages
1065 - 1072
Database
ISI
SICI code
0004-6256(1996)111:3<1065:CPO1BO>2.0.ZU;2-A
Abstract
The optical (BVRI) monitoring data covering 5 years for 12 x-ray-selec ted BL Lac objects are presented in this paper. The main results are: (1) IE 0317+178 has shown a variability of 0.53 mag in R band on a tim e 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 valua ble to understand the relation between XBLs and RBLs. (C) 1996 America n Astronomical Society.