Starspot activity on the RS CVn-type binary II Pegasi during 1999-2001
文献类型：期刊论文
| 作者 | Gu SH(顾盛宏) ; Tan HS(谭徽松); Wang XB(王晓彬); Dan HG(单红光)
|
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2003-07 |
| 卷号 | 405期号:2页码:763-768 |
| 关键词 | stars : late-type stars : activity stars : imaging stars : starspots stars : individual : II Peg |
| ISSN号 | 0004-6361 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Gu, SH (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Joint Lab Opt Astron, Kunming, Peoples R China. |
| 英文摘要 | By means of Doppler imaging, new high-resolution spectroscopic observations of II Peg, carried out in three observing seasons from 1999 to 2001, were analyzed. The lines FeI6430.844 Angstrom and CaI6439.075 Ohm were chosen as map lines, and three surface maps of II Peg were obtained. The results demonstrate that the main features of these surface maps are high-latitude active regions around 60degrees and no polar cap is seen in the maps. The surface patterns of II Peg show large changes, the largest scale active regions appear in July-Aug. 1999 and then they become small and separated in Feb. 2000. The active longitude switches to another hemisphere in Nov.-Dec. 2001 from the one in Feb. 2000. Such spot evolution is not consistent with the activity cycle derived previously. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | STELLAR SURFACE-STRUCTURE ; ACTIVITY CYCLE ; AB DORADUS |
| 收录类别 | SCI |
| 原文出处 | http://www.aanda.org/articles/aa/abs/2003/26/aa3086/aa3086.html |
| 语种 | 英语 |
| WOS记录号 | WOS:000183615700040 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5163]  |
| 专题 | 云南天文台_恒星物理研究组 |
| 作者单位 | National Astronomical Observatories/Yunnan Observatory, Joint Laboratory for Optical Astronomy, Chinese Academy of Sciences, Kunming, PR China |
| 推荐引用方式 GB/T 7714 | Gu SH,Tan HS,Wang XB,et al. Starspot activity on the RS CVn-type binary II Pegasi during 1999-2001[J]. ASTRONOMY & ASTROPHYSICS,2003,405(2):763-768. |
| APA | Gu SH,Tan HS,Wang XB,&Dan HG.(2003).Starspot activity on the RS CVn-type binary II Pegasi during 1999-2001.ASTRONOMY & ASTROPHYSICS,405(2),763-768. |
| MLA | Gu SH,et al."Starspot activity on the RS CVn-type binary II Pegasi during 1999-2001".ASTRONOMY & ASTROPHYSICS 405.2(2003):763-768. |
入库方式： OAI收割
来源：云南天文台
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