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首页> 外文期刊>The Astrophysical journal >RUNAWAY MASSIVE BINARIES AND CLUSTER EJECTION SCENARIOS
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RUNAWAY MASSIVE BINARIES AND CLUSTER EJECTION SCENARIOS

机译：RUNAWAY大规模二进制数和集群弹出场景

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The production of runaway massive binaries offers key insights into the evolution of close binary stars and open clusters. The stars HD 14633 and HD 15137 are rare examples of such runaway systems, and in this work we investigate the mechanism by which they were ejected from their parent open cluster, NGC 654. We discuss observational characteristics that can be used to distinguish supernova ejected systems from those ejected by dynamical interactions, and we present the results of a new radio pulsar search of these systems, as well as estimates of their predicted X-ray flux assuming that each binary contains a compact object. Since neither pulsars nor X-ray emission are observed in these systems, we cannot conclude that these binaries contain compact companions. We also consider whether they may have been ejected by dynamical interactions in the dense environment where they formed, and our simulations of four-body interactions suggest that a dynamical origin is possible but unlikely. We recommend further X-ray observations that will conclusively identify whether HD 14633 or HD 15137 contain neutron stars.
机译：失控的大质量双星的产生提供了对紧密双星和开放星团演化的关键见解。 HD 14633和HD 15137恒星是此类失控系统的罕见例子，在这项工作中，我们研究了将其从其父系开放星团NGC 654中弹出的机制。我们讨论了可用于区分超新星弹出系统的观测特征。从动力学相互作用弹出的那些中，我们给出了这些系统的新无线电脉冲星搜索的结果，以及假设每个二进制文件包含一个紧凑物体的情况下对它们预测的X射线通量的估计。由于在这些系统中均未观察到脉冲星或X射线发射，因此我们不能得出结论，这些二进制文件包含紧凑的伴星。我们还考虑了它们是否可能在形成它们的稠密环境中被动力学相互作用弹出，我们对四体相互作用的模拟表明，动力学起源是可能的，但不太可能。我们建议进行进一步的X射线观察，以最终确定HD 14633或HD 15137是否包含中子星。

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