NAOC Open IR
Optical monitoring and intra-day variabilities of BL Lac Objects OJ 287
Yuan, Yu-Hai1,2,3; Fan, Jun-Hui1,2,3; Wu, Hong4; Hao, Jing-Meng1,2,3; Huang, Wei-Rong1,2,3; Liu, Xiao-Lan1,2,3; Huang, Hong-Ren1,2,3
2021-08-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:6Pages:13
AbstractUsing the 1.26 m National Astronomical Observatory-Guangzhou University Infrared/Optical Telescope (NGT), we monitor one BL Lac object, OJ 287. For this source, we obtain 15 094 gri observations (4900 at g band, 5184 at r band and 5010 at i band) in 155 nights from 2014 December 13 to 2019 March 15. Based on the upper observations, we obtain the following results. (1) The total variation amplitude is similar to 2.3 mag. (2) There are intra-day variabilities (IDVs). The IDV timescales (Delta T) are in the range from 7.69 min (Delta m = 0.06 +/- 0.02 mag) to 371.09 min (Delta m = 0.26 +/- 0.04 mag). (3) There are strong correlations between Delta T and Delta m, Delta m = (2.91 +/- 0.66) x 10(-4)Delta T + (0.08 +/- 0.009), with r = 0.52, p = 5.33 x 10(-5). (4) There are intra-day periods in this source, with the period P approximate to 94 min on 2017 December 10. When we supplement the observations from the literature, we can obtain that the long-term period is about 12.02 +/- 0.41 yr. (5) The spectral properties of OJ 287 show the bluer-when-brighter behavior, whatever state the source is at.
Keywordquasars individual (OJ 287) photometry
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Program of Guangzhou ; Science and Technology Program of Guangzhou ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Program of Guangzhou ; Science and Technology Program of Guangzhou ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Program of Guangzhou ; Science and Technology Program of Guangzhou ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Program of Guangzhou ; Science and Technology Program of Guangzhou
DOI10.1088/1674-4527/21/6/138
WOS KeywordLACERTAE OBJECTS ; SPECTRAL VARIABILITY ; LIGHT-CURVE ; BINARY ; COLOR ; PERIODICITY ; OJ-287 ; OJ287 ; FLUX ; MICROVARIABILITY
Language英语
Funding ProjectNational Natural Science Foundation of China[U1831119] ; National Natural Science Foundation of China[U1531245] ; National Natural Science Foundation of China[U1431112] ; National Natural Science Foundation of China[11733006] ; National Natural Science Foundation of China[11503004] ; National Natural Science Foundation of China[11403006] ; Science and Technology Program of Guangzhou[201707010401]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Program of Guangzhou ; Science and Technology Program of Guangzhou ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Program of Guangzhou ; Science and Technology Program of Guangzhou ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Program of Guangzhou ; Science and Technology Program of Guangzhou ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Program of Guangzhou ; Science and Technology Program of Guangzhou
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000684231400001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75953
Collection中国科学院国家天文台
Corresponding AuthorYuan, Yu-Hai
Affiliation1.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Peoples R China
2.Astron Sci & Technol Res Lab Dept Educ Guangdong, Guangzhou 510006, Peoples R China
3.Key Lab Astron Observat & Technol Guangzhou, Guangzhou 510006, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Yuan, Yu-Hai,Fan, Jun-Hui,Wu, Hong,et al. Optical monitoring and intra-day variabilities of BL Lac Objects OJ 287[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(6):13.
APA Yuan, Yu-Hai.,Fan, Jun-Hui.,Wu, Hong.,Hao, Jing-Meng.,Huang, Wei-Rong.,...&Huang, Hong-Ren.(2021).Optical monitoring and intra-day variabilities of BL Lac Objects OJ 287.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(6),13.
MLA Yuan, Yu-Hai,et al."Optical monitoring and intra-day variabilities of BL Lac Objects OJ 287".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.6(2021):13.
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