SIMULTANEOUS B'V'R' MONITORING OF BL LACERTAE OBJECT S5 0716+714 AND DETECTION OF INTER-BAND TIME DELAY

Journal Article · Tue May 15 04:00:00 EDT 2012 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/143/5/108· OSTI ID:22034652

Jianghua, Wu; Xiangtao, He ^[1]; Boettcher, Markus ^[2]; Xu, Zhou; Jun, Ma

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1. Department of Astronomy, Beijing Normal University, Beijing 100875 (China)
2. Astrophysical Institute, Department of Physics and Astronomy, Ohio University, Athens, OH 45701 (United States)

We present the results of our optical monitoring of the BL Lac object S5 0716+714 over seven nights in 2006 December. The monitoring was carried out simultaneously at three optical wavelengths with a novel photometric system. The object did not show large-amplitude internight variations during this period. Intranight variations were observed on four nights and probably on one more. Strong bluer-when-brighter chromatism was detected on both intranight and internight timescales. The intranight variation amplitude decreases in the wavelength sequence of B', R', and V'. Cross-correlation analyses revealed that the variability at the B' and V' bands leads that at the R' band by about 30 minutes on one night.

• OSTI ID: 22034652
• Journal Information: Astronomical Journal (New York, N.Y. Online), Journal Name: Astronomical Journal (New York, N.Y. Online) Journal Issue: 5 Vol. 143; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
AMPLITUDES
ASTRONOMY
ASTROPHYSICS
BL LACERTAE OBJECTS
CORRELATIONS
DETECTION
GALAXIES
MONITORING
PHOTOMETRY
TIME DELAY
VARIATIONS
WAVELENGTHS