The fractions of post-binary-interaction stars and evolved blue straggler stars on the red giant branch of globular clusters
The fractions of post-binary-interaction stars and evolved blue straggler stars on the red giant branch of globular clusters
复制标题
双星相互作用后恒星和演化后的蓝离散星在球状星团红巨星分支上的比例
DOI:
10.1088/1674-4527/21/9/223
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发表时间:
2021-05
影响因子:
1.8
通讯作者:
Dengkai Jiang
中科院分区:
文献类型:
--
作者:
D;an Wei;Bo Wang;Hai-Liang Chen;H. F. Wang;Xiao-Bo Gong;Dongdong Liu;Dengkai Jiang
The red giant branch (RGB) of globular clusters (GCs) is home to some exotic stars, which may provide clues on the formation of multiple stellar populations in GCs. It is well known that binary interactions are responsible for many exotic stars. Thus, it is important to understand what fraction of stars on the RGB of GCs is the result of binary interactions. In this paper, we performed a binary population synthesis study to track the number of post-binary-interaction (post-BI) stars that appear on the RGB, with particular emphasis on the evolved blue straggler stars (E-BSSs). Assuming an initial binary fraction of nearly 50%, we find that about half of the objects on the RGB (called giants) underwent the binary interactions, and that E-BSSs account for around 10% of the giants in our standard simulation. We also compare the properties of post-BI giants that evolved from different channels. We find that the initial orbital period and mass ratio distributions significantly affect the fraction of post-BI giants. Our results imply that the non-standard stars from binary interactions provide a non-negligible contribution to the RGB stars in GCs, which should be considered in future investigations of the origin of multiple stellar populations.
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DOI:
10.3847/1538-4357/abb1b7
发表时间:
2020-08
期刊:
The Astrophysical Journal
影响因子:
--
作者:
W.-X. Sun;Y. Huang;H.-F. Wang;C. Wang;M. Zhang;X.-Y. Li;B.-Q. Chen;H.-W. Zhang;D.-D. Wei;D.-K. Jiang;X.-W. Liu
通讯作者:
X.-W. Liu
DOI:
10.1046/j.1365-8711.2002.05752.x
发表时间:
2002-06
影响因子:
4.8
作者:
Zhanwen Han;P. Podsiadlowski;P. Maxted;T. Marsh;N. Ivanova
通讯作者:
Zhanwen Han;P. Podsiadlowski;P. Maxted;T. Marsh;N. Ivanova
影响因子:
6.5
作者:
D. Vanbeveren;N. Mennekens;J. Greve
通讯作者:
D. Vanbeveren;N. Mennekens;J. Greve
DOI:
10.1111/j.1365-2966.2008.13334.x
发表时间:
2008-04
影响因子:
4.8
作者:
Han, Zhanwen;Chen, Xuefei
通讯作者:
Chen, Xuefei
DOI:
10.1086/324233
发表时间:
2001-12
期刊:
The Astronomical Journal
影响因子:
--
作者:
B. Carney;D. Latham;J. B. Laird;C. Grant;J. Morse
通讯作者:
B. Carney;D. Latham;J. B. Laird;C. Grant;J. Morse