论文标题
用VLT/X-Shooter Spectra分类3个积聚二进制文件
Classification of 3 accreting binaries with VLT/X-Shooter spectra
论文作者
论文摘要
自推出以来，国际伽马射线天体物理学实验室（Integrood）卫星已经发现了数百个X射线源，其中许多源缺乏适当的分类。这项任务还导致发现了新类别的高质量X射线二进制文件（HMXB）。我们在欧洲南部天文台非常大的望远镜（ESO）上使用X射手仪器的光谱，以更好地了解3个积聚二进制文件的性质（IGR J10101-5654，IGR J11435-6109和IGR J112489-6243）。我们主要关注X射击光谱的线条和连续体。我们使用图像群来限制源的性质，并通过Spitzer和红外线探索者（Wise）（Wise）进行的测量以及盖亚的视差距离进行了补充。我们确定了每个二进制系统的性质：具有光谱型B0.5VE的伴侣星的BEHMXB系统，具有IGR J10101-5654和IGR J11435-6109的特殊碳排放，以及带有EGREVED K Star（K0IV-K2IV）的CV系统，用于IGR J112489-62489-6243。在IGR J11435-6109的情况下，我们还估计了法定磁盘和中子星轨道的一些几何参数。
Since its launch, the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) satellite has discovered hundreds of X-ray sources, many of which lack proper classification. This mission also led to the discovery of new categories of high mass X-ray binaries (HMXB). We use the spectra of the X-Shooter instrument at the Very Large Telescope (VLT) of the European Southern Observatory (ESO) to better understand the nature of 3 accreting binaries (IGR J10101-5654, IGR J11435-6109 and IGR J12489-6243) discovered by INTEGRAL. We mainly focused on the lines and continuum from the X-Shooter spectra. We used atlases to constrain the nature of the sources and also complemented the spectra with measurements taken by Spitzer and the Wide-field Infrared Survey Explorer (WISE) in infrared, and parallaxes from Gaia for the distances. We determined the nature of each binary system: a BeHMXB system with a companion star of spectral type B0.5Ve with peculiar carbon emission for IGR J10101-5654 and IGR J11435-6109, and a CV system with an evolved K star (K0IV-K2IV) for IGR J12489-6243. We also estimated some geometrical parameters of the decretion disk and neutron star's orbit in the case of IGR J11435-6109.
