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Optical variability of PHL 1811 and 3C 273

Published online by Cambridge University Press:  24 March 2015

J. H. Fan ,
O. Kurtanidze ,
Y. Liu ,
Y. H. Yuan ,
J. M. Hao ,
W. Cai ,
H. B. Xiao  and
Z. Y. Pei
J. H. Fan
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected] Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
O. Kurtanidze
Affiliation:
Abastumani Observatory, Mt. Kanobili, 0301 Abastumani, Georgia
Y. Liu
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected] Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
Y. H. Yuan
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected] Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
J. M. Hao
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected] Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
W. Cai
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected] Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
H. B. Xiao
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected] Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
Z. Y. Pei
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected] Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
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Abstract

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In this work, we reported the optical photometry monitoring results for two brightest nearby quasars, PHL 1811 and 3C 273 using the ST-6 camera at Abastumani Observatory, Georgia. For PHL 1811, we found 3 microvariability events with time scale of ΔT = 6.0 min. For 3C273, we found that the largest variations are ΔV = 0.369 ± 0.028 mag, ΔR = 0.495 ± 0.076 mag, and ΔI = 0.355 ± 0.009 mag. When periodicity analysis methods are adopted to the available data, a period of p = 5.80 ± 1.12 years is obtained for PHL 1811, and p = 21.10 ± 0.14, 10.00 ± 0.14, 7.30 ± 0.09, 13.20 ± 0.09, 2.10 ± 0.06, and 0.68 ± 0.05 years are obtained for 3C 273.

Keywords

quasars: individual (PHL 1811, 3C273): photometry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S313: Extragalactic jets from every angle , September 2014 , pp. 79 - 80
Copyright
Copyright © International Astronomical Union 2015 

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