论文标题
明亮的光谱二进制物：ii。对轨道周期p <500天的五个系统的研究
Bright Spectroscopic Binaries: II. A study of five systems with orbital periods of P < 500 days
论文作者
论文摘要
我们提供了五个明亮光谱二进制系统（HD 18665，HD 27131，HD 171852，HD 215550，HD 217427）的详细分析，其轨道周期为P <500天。我们通过分析观察到的径向速度曲线来确定使用工具包RADVEL的完整轨道参数集。为了研究五个系统的性质，我们还分析了使用Tigre望远镜观察到的中间分辨率光谱（r = 20,000），并使用工具包ISPEC确定了主要恒星的恒星参数。使用Gaia早期数据发布3个差异，对使用3D防尘图的星际灭绝进行了校正以及降压校正，我们将恒星放置在Hertzsprung-Russell图中，并比较了用Eggleton代码计算出的恒星进化轨道的位置，以确定原始恒星的质量和年龄。它们都演变为巨型阶段。最后，我们能够确定次级恒星的质量，并估计二元系统的轨道倾斜I。
We present a detailed analysis of five bright spectroscopic binary systems (HD 18665, HD 27131, HD 171852, HD 215550, HD 217427) that have orbital periods of P < 500 days. We determined the complete set of orbital parameters using the toolkit RadVel by analyzing the observed radial velocity curves. To study the properties of the five systems, we also analyzed the intermediate resolution spectra (R = 20,000) observed with the TIGRE telescope and determined the stellar parameters of the primary stars using the toolkit iSpec. With Gaia Early Data Release 3 parallaxes, a correction for interstellar extinction using the 3D dust map, and bolometric corrections, we placed the stars in the Hertzsprung-Russell diagram and compared the positions with stellar evolution tracks calculated with the Eggleton code to determine the masses and ages of the primary stars. They have all evolved to the giant phase. Finally, we were able to determine the masses of the secondary stars and to estimate the orbital inclinations i of the binary systems.
