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
Determination method for binary fractions using the integrated spectrum

文献类型：期刊论文

作者Zhang FH(张奉辉)2,3,4; Li LF(李立芳)2,3,4; Han ZW(韩占文)2,3,4; Wang XG(王小刚)1,3,4
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2024-06-11
卷号531期号:3页码:3468-3478
关键词binaries: general Galaxy: evolution globular clusters: general galaxies: fundamental parameters galaxies:clusters
ISSN号0035-8711
DOI10.1093/mnras/stae1346
产权排序第1完成单位
文献子类Article
英文摘要We need to resolve the individual stars for binary-fraction determinations of stellar systems. Therefore, it is not possible to obtain the binary fractions for dense or distant stellar systems. We propose a method to determine the binary fraction of a dense or distant stellar system: this method is first to determine the binary-fraction variation for any two adjacent regions and then to add up those binary-fraction variations along the radial direction to obtain the binary fraction for a stellar system. The binary-fraction variation is derived using 10 binary-fraction-sensitive spectral absorption feature indices (SAFIs) and the binary-fraction variation calibrations in terms of these SAFIs. Using this method, we first present the binary-fraction variations for 21 Galactic globular clusters (GCs). By comparison, we find that they agree well with the binary fractions based on the main-sequence fiducial line method from previous studies. This verifies that the above-mentioned method is feasible. Next, we present the binary-fraction variations of 13 Galactic GCs. We give the relationships between the binary fraction and various parameters, and find that the binary fraction is negatively correlated with N-HB and N-RR, the binary fraction of some studies is not strongly correlated with NBS, and the number of GCs with large binary fraction is greater for the extreme blue horizontal branch population ratio. Finally, if we want to obtain a more accurate binary fraction, we suggest that spectroscopic and photometric observations are conducted at an appropriate area interval for a stellar system.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
WOS关键词SUBDWARF-B-STARS ; POPULATION SYNTHESIS ; STELLAR POPULATION ; GLOBULAR-CLUSTERS ; ORIGIN ; BULGE
资助项目Natural Science Foundation of China[11973081]; National Natural Science Foundation of China[CMS-CSST-2021-A08]; China Manned Space Project[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001244398000009
出版者OXFORD UNIV PRESS
资助机构Natural Science Foundation of China[11973081] ; National Natural Science Foundation of China[CMS-CSST-2021-A08] ; China Manned Space Project[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27407]  
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.University of Chinese Academy of Sciences, Beijing 100049, China
2.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, China;
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China;
4.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China;
推荐引用方式
GB/T 7714		 Zhang FH,Li LF,Han ZW,et al. Determination method for binary fractions using the integrated spectrum[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,531(3):3468-3478.
APA 张奉辉,李立芳,韩占文,&王小刚.(2024).Determination method for binary fractions using the integrated spectrum.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,531(3),3468-3478.
MLA 张奉辉,et al."Determination method for binary fractions using the integrated spectrum".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 531.3(2024):3468-3478.

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。