不简单

IF 12.9 1区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Nature Astronomy Pub Date : 2024-06-20 DOI:10.1038/s41550-024-02312-w

Paul Woods

引用次数: 0

摘要

X射线双星（XRBs）是一种物质从供体恒星吸积到紧凑天体（白矮星/中子星/恒星质量黑洞）上的系统，因此它们是研究吸积物理学的绝佳实验室。虽然供体-受体对的物理特性很好，但人们对更广泛的系统知之甚少，包括这类系统是否有环状盘或伴星（行星、褐矮星或恒星）。Myriam Prasow-Émond 及其同事利用 Keck 的自适应光学系统和 NIRC2 仪器的涡旋日冕仪研究了 13 个高质 XRB 周围约 100-10,000 au 的区域，利用高对比度成像找到了几个候选环盘伴星。对一个有两个观测纪元的系统--γ Cas--进行了正动研究，发现在 380 au 投影距离处有一个伴星。对于其余的双星，利用银河系内的星域三维模型（TRILEGAL）来确定候选星是否可能与目标 XRB 存在引力束缚或前景/背景污染。共发现 8 个系统存在候选环伴星，因此每个 XRB 的多系统频率（MF）约为 0.6，伴星频率（CF）约为 0.8。不过，所有候选者都需要通过后续的正常运动分析来确认。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Astronomy Physics and Astronomy-Astronomy and Astrophysics

CiteScore

19.50

自引率

2.80%

发文量

252

期刊介绍： Nature Astronomy, the oldest science, has played a significant role in the history of Nature. Throughout the years, pioneering discoveries such as the first quasar, exoplanet, and understanding of spiral nebulae have been reported in the journal. With the introduction of Nature Astronomy, the field now receives expanded coverage, welcoming research in astronomy, astrophysics, and planetary science. The primary objective is to encourage closer collaboration among researchers in these related areas. Similar to other journals under the Nature brand, Nature Astronomy boasts a devoted team of professional editors, ensuring fairness and rigorous peer-review processes. The journal maintains high standards in copy-editing and production, ensuring timely publication and editorial independence. In addition to original research, Nature Astronomy publishes a wide range of content, including Comments, Reviews, News and Views, Features, and Correspondence. This diverse collection covers various disciplines within astronomy and includes contributions from a diverse range of voices.