YNAO OpenIR  > 丽江天文观测站(南方基地)
MAGNETIC ACTIVITY AND ORBITAL PERIOD VARIATION OF THE SHORT-PERIOD ECLIPSING BINARY DV Psc
Pi, QF1,2; Zhang, LY1,2; Li, ZM3; Zhang XL(张西亮)2,4; Zhang, LY (reprint author), Guizhou Univ, Coll Sci, Dept Phys, Guiyang 550025, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2014-03
卷号147期号:3
DOI10.1088/0004-6256/147/3/50
产权排序第4完成单位
收录类别SCI
关键词Binaries: Eclipsing Stars: Chromospheres Stars: Flare Stars: Late-type Starspots
摘要We present six new BVRcIc CCD light curves of a short-period RS CVn binary DV Psc obtained in 2010-2012. The light curve distortions change on both short and long timescales, which is explained by two starspots on the primary component. Moreover, five new flare events were detected and the flare ratio of DV Psc is about 0.082 flares per hour. There is a possible relation between the phases (longitude) of the flares and starspots for all of the available data of late-type binaries, which implies a correlation of the stellar activity of the spots and flares. The cyclic oscillation, with a period of 4.9 +/- 0.4 yr, may result from the magnetic activity cycle, identified by the variability of Max. I-Max. II. Until now, there were no spectroscopic studies of chromospheric activity indicators of the H-beta and H-gamma lines for DV Psc. Our observations of these indicators show that DV Psc is active, with excess emissions. The updated O - C diagram with an observing time span of about 15 yr shows an upward parabola, which indicates a secular increase in the orbital period of DV Psc. The orbital period secularly increases at a rate of dP/dt = 2.0x10(-7) days yr(-1), which might be explained by the angular momentum exchanges or mass transfer from the secondary to primary component.
项目资助者NSFC [10978010, 11263001, U1231102, 11203005, 11203070] ; Open Project Program of the Key Laboratory of Optical Astronomy ; NAOC ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
WOS记录号WOS:000331125600005
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]RS-CANUM-VENATICORUM ; CHROMOSPHERIC ACTIVITY ; CLOSE BINARIES ; RT ANDROMEDAE ; II-PEGASI ; H-ALPHA ; STAR ; EMISSION ; MODULATION ; SYSTEMS
引用统计
被引频次:10[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/114a53/5448
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Zhang, LY (reprint author), Guizhou Univ, Coll Sci, Dept Phys, Guiyang 550025, Peoples R China.
作者单位1.College of Science/Department of Physics & NAOC-GZU-Sponsored Center for Astronomy Research, Guizhou University, Guiyang 550025, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.Institute for Astronomy and History of Science and Technology, Dali University, Dali 671003, China
4.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
推荐引用方式
GB/T 7714
Pi, QF,Zhang, LY,Li, ZM,et al. MAGNETIC ACTIVITY AND ORBITAL PERIOD VARIATION OF THE SHORT-PERIOD ECLIPSING BINARY DV Psc[J]. ASTRONOMICAL JOURNAL,2014,147(3).
APA Pi, QF,Zhang, LY,Li, ZM,Zhang XL,&Zhang, LY .(2014).MAGNETIC ACTIVITY AND ORBITAL PERIOD VARIATION OF THE SHORT-PERIOD ECLIPSING BINARY DV Psc.ASTRONOMICAL JOURNAL,147(3).
MLA Pi, QF,et al."MAGNETIC ACTIVITY AND ORBITAL PERIOD VARIATION OF THE SHORT-PERIOD ECLIPSING BINARY DV Psc".ASTRONOMICAL JOURNAL 147.3(2014).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
MAGNETIC ACTIVITY AN(2703KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Pi, QF]的文章
[Zhang, LY]的文章
[Li, ZM]的文章
百度学术
百度学术中相似的文章
[Pi, QF]的文章
[Zhang, LY]的文章
[Li, ZM]的文章
必应学术
必应学术中相似的文章
[Pi, QF]的文章
[Zhang, LY]的文章
[Li, ZM]的文章
相关权益政策
暂无数据
收藏/分享
文件名: MAGNETIC ACTIVITY AND ORBITAL PERIOD VARIATION OF THE SHORT-PERIOD ECLIPSING BINARY DV Psc.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。