论文标题
从Lamost Time域调查中发现的四个$ k $ 2板的二进制文件可能紧凑的组件
Binaries with possible compact components discovered from the LAMOST Time-Domain Survey of four $K$2 plates
论文作者
论文摘要
来自大型天空区域多对象纤维光谱望远镜（LAMOST）的时域（TD）光谱数据可以提供准确且高的径向径向速度（RVS）。在这项工作中，我们使用四个$ k $ 2板的Lamost TD调查搜索带有RV监视方法紧凑型组件的二进制组件。发现了三个二元系统，包括看不见的白矮人或中子星。对于每个二进制系统，我们估计可见的恒星和轨道参数的恒星参数，最后计算出二进制质量函数以及看不见的星的最小质量。从三个来源的杆中等分辨率光谱中没有明显的双线特征。此外，我们没有发现所有这些来源的X射线对应物，而是其中两个来源的紫外线伴侣。光谱散开还显示出具有光吸收光谱的其他组件，支持这些系统包含紧凑的对象。
Time-domain (TD) spectroscopic data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) can provide accurate and high-cadence radial velocities (RVs). In this work, we search for binaries with compact components with RV monitoring method by using the LAMOST TD survey of four $K$2 plates. Three binary systems including an unseen white dwarf or neutron star are found. For each binary system, we estimate the stellar parameters of the visible star and orbital parameters, and finally calculate the binary mass function and the minimum mass of the unseen star. No obvious double-lined feature is seen from the LAMOST medium-resolution spectra of the three sources. In addition, we found no X-ray counterpart for all these sources but UV companions for two of them. Spectral disentangling also shows no additional component with optical absorption spectra, supporting that these systems contain compact objects.
