Simultaneous optical g, r, i monitoring and IDV periodic analysis for quasar 3C 454.3
文献类型：期刊论文
| 作者 | Fan JunHui2; Yuan YuHai2; Wu Hong1 ; Wang Feng2; Tao Jun1; Gu MinFeng1
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2019 |
| 卷号 | 19期号:10 |
| 关键词 | SPECTRAL SLOPE VARIABILITY BL-LACERTAE OBJECTS INTRADAY VARIABILITY INFRARED OBSERVATIONS BLAZAR 3C-454.3 COMPLETE SAMPLE BLACK-HOLES X-RAY RADIO MICROVARIABILITY galaxies: quasars: individual (3C 454.3) |
| ISSN号 | 1674-4527 |
| 英文摘要 | With the 1.26m National Astronomical Observatory-Guangzhou University Infrared/Optical Telescope (NAGIOT) at Xinglong Station of National Astronomical Observatories, Chinese Academy of Sciences, we obtained 419 groups of simultaneous observations at g, r and i bands, for the first time, targeting quasar 3C 454.3 during 15 nights from 2016 October 23 to 2016 December 15. Based on our observations, we investigate the optical variabilities, the relation between brightness and color index, and the periodicity variability. The presented analyses demonstrate that: 1. The maximum variations at the g, r and i bands are Delta m(g)vertical bar max = 1.015 +/- 0.042 mag, Delta mr vertical bar max = 1.188 +/- 0.050 mag and Delta mi vertical bar max = 1.305 +/- 0.057 mag respectively. 2. During our 15 night monitoring program, intra-day variability was detected on one night (Nov. 2). Also, the brightness increased by A = 15.86% over 50.8min, then decreased by A = 22.42% over 40.1min. After a small bright state, its brightness increased again by 18.1% over 55 min at the g band. Similar phenomena happened at r and i bands. The intra-day variabilities at the three bands on 2016 November 2 indicate a period of 105 min, which implies a black hole mass of M BH = (0.3 similar to 1.85) x 109 M.. 3. There is an anti-correlation between color index and magnitude, suggesting the source becomes redder when it brightens. |
| 资助项目 | [National Natural Science Foundation of China] ; [Natural Science Foundation of Guangdong Province] ; [Science and Technology Program of Guangzhou] ; [supports for Astrophysics Key Subjects of Guangdong Province] ; [supports for Astrophysics Key Subjects of Guangzhou City] |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/57945]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.中国科学院国家天文台 2.广州大学 3.中国科学院广州地球化学研究所 |
| 推荐引用方式 GB/T 7714 | Fan JunHui,Yuan YuHai,Wu Hong,et al. Simultaneous optical g, r, i monitoring and IDV periodic analysis for quasar 3C 454.3[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(10). |
| APA | Fan JunHui,Yuan YuHai,Wu Hong,Wang Feng,Tao Jun,&Gu MinFeng.(2019).Simultaneous optical g, r, i monitoring and IDV periodic analysis for quasar 3C 454.3.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(10). |
| MLA | Fan JunHui,et al."Simultaneous optical g, r, i monitoring and IDV periodic analysis for quasar 3C 454.3".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.10(2019). |
入库方式： OAI收割
来源：国家天文台
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