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A Photometric Monitoring of the M-type Eclipsing Binary CU Cnc
Jiang LQ(江林巧)1; Qian SB(钱声帮)1
会议录名称Astronomical Society of the Pacific (ASP) Conference Series - NINTH PACIFIC RIM CONFERENCE ON STELLAR ASTROPHYSICS
2012
卷号451
页码163-166
会议录编者/会议主办者Qian, SB; Leung, KC; Zhu, L; Kwok, S
产权排序第1完成单位
收录类别CPCI
会议名称9th Pacific Rim Conference on Stellar Astrophysics
会议日期2011-04-14
会议地点Lijiang, PEOPLES R CHINA
摘要

CU Cancri is an eclipsing binary which is composed of two M-type companions. We detected a large red flare of CU Cnc in the R-band with the 60-cm telescope in Yunnan Astronomical Observatory on October 28, 2009. The amplitude of the flare is about of 0.52 mag and the duration time is about 73 minutes. Another three flares in the same band were detected during 90.8-hours monitoring, which reveal a red flare rate of 0.044 flares per hour. CU Cnc also has other strong chromospheric and coronal emissions. These detections together with the emissions indicate that it has the strongest magnetic activity, and compared with other single red dwarfs of the same mass, CU Cnc is fainter (similar to 1.4 magnitude in V-band). This phenomenon may be plausibly explained by the coverage of the dark spots. That means the coverage of dark spots on red-dwarf eclipsing binaries may be seriously underestimated before.

语种英语
学科领域天文学 ; 天体物理学 ; 恒星与银河系
学科门类理学 ; 理学::天文学
文章类型Proceedings Paper
出版者ASTRONOMICAL SOC PACIFIC
出版地390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA
ISBN号978-1-58381-785-8
URL查看原文
归档日期2012-12-18
WOS记录号WOS:000304126300029
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]M-dwarfs ; Star
引用统计
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5960
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者Jiang LQ(江林巧)
作者单位1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China
2.Key laboratory of the structure and evolution of celestial objects, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China
3.Graduate University of the Chinese Academy of Sciences, 100049 Beijing, P. R. China
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Jiang LQ,Qian SB. A Photometric Monitoring of the M-type Eclipsing Binary CU Cnc[C]//Qian, SB; Leung, KC; Zhu, L; Kwok, S. 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA:ASTRONOMICAL SOC PACIFIC,2012:163-166.
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