The optical variability of two X-ray-selected and nine radio-selected BL Lac objects

Details The optical variability of two X-ray-selected and nine radio-selected BL Lac objects The optical variability of two X-ray-selected and nine radio-selected BL Lac objects

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96...24x&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 96, July 1988, p. 24-29.

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47

Charge Coupled Devices, Galactic Nuclei, Radio Astronomy, Variable Stars, X Ray Astronomy, Cassegrain Optics, Computational Astrophysics, Telescopes

Scientific paper

RVB photometric observations of 11 BL Lac objects and one QSO are reported. Data obtained using a CCD detector system at the Cassegrain focus of the 102-cm telescope at Yunnan Observatory during the period November 1986 - April 1987 are presented in extensive tables and graphs and briefly characterized. No variability on short characteristic time scale (CTS) is detected in OJ 287, 3C 66A, or the QSO (3C 273), while variation of B amplitude 0.8 and CTS 103 min is found in ON +231. The variation of IE 0317+186 is found to have amplitude 0.8 mag in V and 0.52 mag in R, with CTS of 4.5 h.

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