Magnetic activity of the spotted dwarf AP149 in the alpha Persei open cluster

doi:10.1088/1674-4527/10/3/007

YNAO OpenIR > 恒星物理研究组

	Magnetic activity of the spotted dwarf AP149 in the alpha Persei open cluster
	Fang XS(房祥松)1,2 ; Gu SH(顾盛宏)1 ; Cheung, SL 3; Hui, HK 3; Kwok, CT 3; Leung, KC 4; Fang, XS (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2010-03
卷号	10 期号:3 页码:253-265
DOI	10.1088/1674-4527/10/3/007
产权排序	第1完成单位
收录类别	SCI
关键词	Stars: Activity Stars: Late-type Stars: Spots Stars: Individual: Ap149
摘要	The simultaneous photometric and spectroscopic observations of the spotted G dwarf AP149 in the young open cluster alpha Persei are analyzed here. We reconstruct the observed light curves with a two-starspot model by means of a light curve modeling technique, and find that the active regions shift oppositely along longitude on a time scale of one day. Combining with the observational data obtained by other groups, we discuss the evolution of spotted regions in the photosphere, and find that its starspots evolve not only on a short time scale but also on a long time scale. The pure chromospheric emissions for Ca IIHK and H(beta) lines are derived by using the spectral subtraction technique. The variation of Ca IIHK lines' excess emission is spatially correlated to the starspot regions. There is no clear rotational modulation for the H(beta) line's excess emission, probably due to the contamination of prominence emission.
项目资助者	National Natural Science Foundation of China [10373023, 10773027] ; Sik Sik Yuen of Hong Kong, China
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	1674-4527
URL	查看原文
归档日期	2010-05-20
WOS记录号	WOS:000275962900007
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	RS-CANUM-VENATICORUM ; CHROMOSPHERIC H-ALPHA ; LATE-TYPE STARS ; LOW-MASS STARS ; ROTATION PERIODS ; CLOSE BINARIES ; MAIN-SEQUENCE ; SYSTEMS ; ENVIRONMENTS ; SPECTROSCOPY
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/5203
专题	恒星物理研究组
通讯作者	Fang, XS (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3.Ho Koon Nature Education cum Astronomical Centre, Sik Sik Yuen, Hong Kong, China 4.Hong Kong Astronomical Society, Hong Kong, China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Fang XS,Gu SH,Cheung, SL,et al. Magnetic activity of the spotted dwarf AP149 in the alpha Persei open cluster[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2010,10(3):253-265.
APA	Fang XS.,Gu SH.,Cheung, SL.,Hui, HK.,Kwok, CT.,...&Fang, XS .(2010).Magnetic activity of the spotted dwarf AP149 in the alpha Persei open cluster.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,10(3),253-265.
MLA	Fang XS,et al."Magnetic activity of the spotted dwarf AP149 in the alpha Persei open cluster".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 10.3(2010):253-265.

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