论文标题
HR 6819的H-Alpha排放线变化
The H-alpha Emission Line Variations of HR 6819
论文作者
论文摘要
Rivinius等人最近提出了Star System HR 6819。作为恒星质量黑洞最近例子的位置。他们的光谱显示了两个组成部分的证据：40 d轨道中的B3 III星和固定的B射击线星。基于轨道质量功能和缺乏反射轨道运动的光谱成分的证据，Rivinius等人。建议HR 6819是一个由内部B3 III恒星加上黑洞二进制的三重系统。在这里，我们基于对其光谱中H-Alpha发射线的检查提出了一个替代模型。我们表明，发射线显示内部轨道中同伴的预期小反射运动，并显示了与轨道相有关的轮廓形状的变化。这表明HR 6819是一个二进制系统，该系统由巨大的恒星和一个低质量伴侣组成，是在传质二进制二进制中剥离的前大量供体恒星的残留物。
The star system HR 6819 was recently proposed by Rivinius et al. as the site of the nearest example of a stellar mass black hole. Their spectra show evidence of two components: a B3 III star in a 40 d orbit and a stationary B-emission line star. Based upon the orbital mass function and the lack of evidence of a spectral component with reflex orbital motion, Rivinius et al. suggested that HR 6819 is a triple system consisting of an inner B3 III star plus black hole binary orbited by a distant Be star. Here we present an alternative model based upon an examination of the H-alpha emission line in their spectra. We show that the emission line displays the small reflex motion expected for the companion in the inner orbit and shows variations in profile shape related to orbital phase. This indicates that HR 6819 is a binary system consisting of a massive Be star and a low mass companion that is the stripped down remnant of a former mass donor star in a mass transfer binary.
