Optical observations of BL Lacertae from 1997 to 1999
文献类型：期刊论文
| 作者 | Fan, JH; Qian, BC; Tao, J
|
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2001-04-01 |
| 卷号 | 369期号:3页码:758-762 |
| 关键词 | galaxies : active BL Lacertae objects : individual : BL Lac (PKS 2200+420) galaxies : photometry |
| 英文摘要 | We present the optical (V, R, and I) photometry for BL Lacertae, which was observed from 1997 through 1999, with the 1.56-m telescope at the Shanghai astronomical observatory (SHAO). After the 1997 outburst. it dimmed to a ion state and then brightened again. During the period JD 2450701 to JD 2450701.5, variations of 0.80 mag, 0.27 mag, and 0.21 mag over a time scale of 100 min were found for V, R, and I bands, suggesting that the variations were decreasing with wavelength. The correlation between V, R, and I is also analyzed using the DCF (Discrete Correlation Function) method. This shows that the variability in the V, R, and I bands are correlated with no time delay longer than 0.2 day. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; RADIO VARIABILITY ; RAPID VARIABILITY ; OBJECTS ; BLAZARS ; OUTBURST ; QUASARS ; GHZ ; PKS-0537-441 ; PHOTOMETRY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000168457800006 |
| 源URL | [http://119.78.226.72/handle/331011/28282]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Guangzhou Univ, Ctr Astrophys, Guangzhou 510400, Peoples R China 2.Chinese Acad Sci, Peking Univ, Joint Beijing Astrophys Ctr, CAS PKU BAC, Beijing, Peoples R China 3.Yunnan Univ, Dept Phys, Kunming, Peoples R China 4.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, JH,Qian, BC,Tao, J. Optical observations of BL Lacertae from 1997 to 1999[J]. ASTRONOMY & ASTROPHYSICS,2001,369(3):758-762. |
| APA | Fan, JH,Qian, BC,&Tao, J.(2001).Optical observations of BL Lacertae from 1997 to 1999.ASTRONOMY & ASTROPHYSICS,369(3),758-762. |
| MLA | Fan, JH,et al."Optical observations of BL Lacertae from 1997 to 1999".ASTRONOMY & ASTROPHYSICS 369.3(2001):758-762. |
入库方式： OAI收割
来源：上海天文台
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