中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 大样本恒星演化研究组
CCD photometric study of a contact binary HH Ursae Majoris

文献类型：期刊论文

作者Han QW(韩全旺)1,2,3; Li LF(李立芳)1,2; Kong XY(孔晓阳)1,2,3; Gong XB(龚小波)1,2,3; Zhao RJ(赵瑞娟)1,2,3
刊名NEW ASTRONOMY
出版日期2014-08
卷号31页码:26-31
关键词Stars: binaries: close Stars: individuals: HH Ursae Majoris Stars: magnetic fields: spots
ISSN号1384-1076
产权排序第一完成单位
通讯作者Han, QW (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
英文摘要New complete BV light curves of a poorly investigated contact binary HH Ursae Majoris (HH UMa) are presented. The light curves are analyzed by using the 2003 version of the Wilson-Devinney (W-D) code. Combining with the radial velocity published by the previous investigators, we obtain the photometric solution of the system. The solution indicates that HH UMa is a W-type W UMa system with a mass ratio of q = m(2)/m(1) = 3.344 and a contact degree of 31.9%. The system has a very low inclination of i = 53.035 degrees and a temperature difference of 247 K between two components. The asymmetry of the light curves can be explained by adding a hot spot located near the neck region of the more massive component. A period investigation based on all available data shows that the period increases at a rate of dP/dt = 2.84 x 10(-7) days yr(-1), which can be explained by mass transfer from the less massive component to the more massive one. We also give the absolute parameters of the system. (C) 2014 Elsevier B.V. All rights reserved.
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]LIGHT CURVES ; STAR LIGHT ; VELOCITY ; SYSTEMS ; LEONIS
收录类别SCI
原文出处http://www.sciencedirect.com/science/article/pii/S1384107614000232
语种英语
WOS记录号WOS:000335629700005
源URL[http://ir.ynao.ac.cn/handle/114a53/4575]  
专题云南天文台_大样本恒星演化研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, PR China
3.University of Chinese Academy of Sciences, Beijing 100049, PR China
推荐引用方式
GB/T 7714		 Han QW,Li LF,Kong XY,et al. CCD photometric study of a contact binary HH Ursae Majoris[J]. NEW ASTRONOMY,2014,31:26-31.
APA Han QW,Li LF,Kong XY,Gong XB,&Zhao RJ.(2014).CCD photometric study of a contact binary HH Ursae Majoris.NEW ASTRONOMY,31,26-31.
MLA Han QW,et al."CCD photometric study of a contact binary HH Ursae Majoris".NEW ASTRONOMY 31(2014):26-31.

入库方式： OAI收割

来源：云南天文台

浏览0
下载0
收藏0
其他版本

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。