MAGNETIC ACTIVITY ANALYSIS FOR A SAMPLE OF G-TYPE MAIN SEQUENCE KEPLER TARGETS
文献类型：期刊论文
| 作者 | Mehrabi, Ahmad1,2; He, Han3,4 ; Khosroshahi, Habib2
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2017-01-10 |
| 卷号 | 834期号:2 |
| 关键词 | stars: activity stars: magnetic field stars: rotation stars: solar-type |
| 英文摘要 | The variation of a stellar light curve owing to rotational modulation by magnetic features (starspots and faculae) on the star's surface can be used to investigate the magnetic properties of the host star. In this paper, we use the periodicity and magnitude of the light-curve variation as two proxies to study the stellar magnetic properties for a large sample of G-type main sequence Kepler targets, for which the rotation periods were recently determined. By analyzing the correlation between the two magnetic proxies, it is found that: (1) the two proxies are positively correlated for most of the stars in our sample, and the percentages of negative, zero, and positive correlations are 4.27%, 6.81%, and 88.91%, respectively; (2) negative correlation stars cannot have a large magnitude of light-curve variation; and (3) with the increase of rotation period, the relative number of positive correlation stars decreases and the negative correlation one increases. These results indicate that stars with shorter rotation period tend to have positive correlation between the two proxies, and a good portion of the positive correlation stars have a larger magnitude of light-curve variation (and hence more intense magnetic activities) than negative correlation stars. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SOLAR-TYPE STARS ; PHOTOMETRIC VARIABILITY ; STELLAR GRANULATION ; ROTATION PERIODS ; LIGHT CURVES ; MISSION ; FIELD ; SUN ; SUPERFLARES ; EVOLUTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000400149000002 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8858]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Bu Ali Sina Univ, Dept Phys, Hamadan 016016, Iran 2.Inst Res Fundamental Sci IPM, Sch Astron, Tehran 193955531, Iran 3.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China 4.Chinese Acad Sci, Key Lab Solar Act, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mehrabi, Ahmad,He, Han,Khosroshahi, Habib. MAGNETIC ACTIVITY ANALYSIS FOR A SAMPLE OF G-TYPE MAIN SEQUENCE KEPLER TARGETS[J]. ASTROPHYSICAL JOURNAL,2017,834(2). |
| APA | Mehrabi, Ahmad,He, Han,&Khosroshahi, Habib.(2017).MAGNETIC ACTIVITY ANALYSIS FOR A SAMPLE OF G-TYPE MAIN SEQUENCE KEPLER TARGETS.ASTROPHYSICAL JOURNAL,834(2). |
| MLA | Mehrabi, Ahmad,et al."MAGNETIC ACTIVITY ANALYSIS FOR A SAMPLE OF G-TYPE MAIN SEQUENCE KEPLER TARGETS".ASTROPHYSICAL JOURNAL 834.2(2017). |
入库方式： OAI收割
来源：国家天文台
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