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arXiv 1609.00487astro-ph.SR
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具有不一致动力学质量的一组选定视觉双星的新距离

New distances for a selected set of visual binaries with inconsistent dynamical masses

V. S. Tamazian, O. Y. Malkov, J. A. Docobo, D. A. Chulkov, P. P. Campo

摘要:

我们已经选择了一组17个视觉双星,表现出很大的不一致性之间的系统质量通过开普勒第三定律相比,通过标准的质量-光度和质谱关系计算。仔细检查轨道数据和数据表表明,目前有9个双星的轨道(WDS 00155-1608、WDS 00174+0853、WDS 05017+2050、WDS 06410+0954、WDS 16212-2536、WDS 17336-3706、WDS 19217-1557、WDS 20312+1116、和WDS 21118+5959)不需要改进,相反,我们为它们推荐不同的视差(距离)值。另一方面,我们认为有八个轨道(WDS 02366+1227、WDS 02434-6643、WDS 03244-1539、WDS 08507+1800、WDS 09128-6055、WDS 11532-1540、WDS 17375+2419和WDS 22408-0333)需要改进。由于本文中提到的各种原因,除非有更好的轨道解和/或更精确的解,否则它们的距离很可能需要修正。为了获得一致的质量值,仍然建议对8个改进轨道中的5个轨道使用动力学视差。对于WDS 02434-6643、WDS 09128-6055和WDS 11532-1540,改进本身产生合理的质量和,同时保持π Hip在1-2σ范围内。新的距离估计为16颗恒星(主要是基于获得的动态的视差)和个人的意见,所有对象的介绍和讨论。

英文摘要:

We have selected a set of 17 visual binaries that demonstrate great inconsistency between the systemic mass obtained through Kepler's Third Law as compared to that calculated through standard mass-luminosity and mass-spectrum relationships. A careful inspection of orbital data and parallaxes showed that the current orbits of nine binaries (WDS 00155-1608, WDS 00174+0853, WDS 05017+2050, WDS 06410+0954, WDS 16212-2536, WDS 17336-3706, WDS 19217-1557, WDS 20312+1116, and WDS 21118+5959) do not need to be improved, instead we recommend different parallax (distance) value for them. On the other hand, we considered that eight orbits (WDS 02366+1227, WDS 02434-6643, WDS 03244-1539, WDS 08507+1800, WDS 09128-6055, WDS 11532-1540, WDS 17375+2419, and WDS 22408-0333) had to be improved. Due to various reasons mentioned in this paper, their distances should most likely be corrected unless better orbital solutions and/or more precise parallaxes are reported. To obtain consistent mass values, the use of the dynamical parallax is still recommended for 5 out of the 8 improved orbits. For WDS 02434-6643, WDS 09128-6055, and WDS 11532-1540, the improvement itself yields reasonable mass sums while maintaining π_{Hip} within a 1-2σ margin. New distance estimates for 16 stars (mainly based on the obtained dynamical parallaxes) and individual comments for all objects are presented and discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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