Isolated massive stars in the Galactic center: The dynamic contribution from the Arches and Quintuplet star clusters

Isolated massive stars in the Galactic center: The dynamic contribution from the Arches and Quintuplet star clusters
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银河中心的孤立大质量恒星:拱门和五重星团的动态贡献

DOI:
10.1051/0004-6361/201323030
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发表时间:
2014
期刊:
arXiv: Solar and Stellar Astrophysics
影响因子:
--
通讯作者:
Harfst
Harfst
中科院分区:
--
文献类型:
--
作者:
Habibi;Stolte;Harfst

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最近,在银河系中心发现了100多颗沃尔夫-拉叶星和OB星。大约三分之一的这些来源在空间上与该地区任何已知的星星星团都没有联系。我们探测银河系中心的大规模集群的数值模型中的漂移源的分布,并将其与在该地区观察到的孤立的大规模源的分布进行比较。我们发现,恒星质量为100兆焦耳漂移远离每个集群的中心高达60 pc使用集群模型。我们最好的模型再现了约60%的已知孤立的大质量恒星,距离拱门星团中心80 pc。当我们只考虑距离Arches集群约20 pc的区域时,这个数字增加到70-80%。
Recently, more than 100 Wolf-Rayet and OB stars were identified in the Galactic center. About a third of these sources are not spatially associated with any of the known star clusters in this region. We probe the distribution of drifted sources in numerical models of the massive clusters in the Galactic center and compare it to the observed distribution of isolated massive sources in this region. We find that stars as massive as 100M⊙drift away from the center of each cluster by up to ~ 60 pc using the cluster models. Our best model reproduces ~ 60% of the known isolated massive stars out to 80 pc from the center of the Arches cluster. This number increases to 70–80% when we only consider the region that is ~ 20 pc from the Arches cluster.
银河系中质量最大的恒星之一可能是孤立形成的
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影响因子: 4.8
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