已分辨的光谱双星：轨道元素和视差

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Astrophysics and Space Science Pub Date : 2025-01-08 DOI:10.1007/s10509-024-04393-5

Dugasa Belay Zeleke, Arseniy M. Sachkov, Oleg Y. Malkov, Seblu Humne Negu, Solomon Belay Tessema, Alyona D. Grinenko

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引用次数: 0

摘要

本文研究了可分辨光谱双星系统的轨道元素和恒星参数。结果表明，分辨光谱双星是恒星距离信息的重要（有时是不可缺少的）来源。我们编制了一份完整的已分辨光谱双星表，并对其中的173颗恒星进行了统计分析。因此，我们构造了轨道元和分量质量的分布。特别是，轨道视差在某半长轴（\(a >\) 26-27 AU）和亮度(V ＆gt；9-10弹)射程。此外，远距离双星（\(d > \approx \) 1 kpc）的三角视差似乎高估了距离。我们还表明，已分辨的光谱双星证实了扎恩的圆化理论。

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Resolved spectroscopic binaries: orbital elements and parallaxes

In this paper, we investigated the orbital elements and stellar parameters of resolved spectroscopic binary systems. It is shown that resolved spectroscopic binary stars are an important (and sometimes indispensable) source of information on the distances to stars. We have compiled a comprehensive catalog of resolved spectroscopic binaries and conducted statistical analysis on 173 stars from this catalog. As a result, we have constructed distributions for orbital elements and component masses. In particular, it is shown that orbital parallaxes are preferable to trigonometric parallaxes in a certain semi-major axis (\(a >\) 26-27 AU) and brightness (V > 9-10 mag) range. Also, trigonometric parallaxes of distant (\(d > \approx \)1 kpc) binaries seem to be overestimating the distance. We have shown also that the resolved spectroscopic binaries confirm the Zahn’s circularization theory.

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来源期刊

Astrophysics and Space Science 地学天文-天文与天体物理

CiteScore

3.40

自引率

5.30%

发文量

106

审稿时长

2-4 weeks

期刊介绍： Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered. The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing. Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.