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arXiv 2006.00837astro-ph.SR
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HIP 18856二元系统的研究

Research of the HIP 18856 binary system

P. Efremova, A. Mitrofanova, V. Dyachenko, A. Beskakotov, A. Maksimov, D. Rastegaev, Yu. Balega, S. Komarinsky

摘要:

本文介绍了HIP 18856双星的研究结果及其轨道的构造。2007-2019年在SAO RAS的BTA获得的新观测数据。早些时候Cvetkovi 'c等人(2016)为这个系统构建了轨道。然而,它是基于6次测量,覆盖了轨道的一小部分。本研究使用了依巴谷(ESA 1997)天体测量卫星的位置参数、已发表的散斑干涉数据(Mason等人,1999; Balega等人,2006,2007; Horch等人,2012,2017)和新数据。基于新的轨道参数,计算了质量和,得到了各组分的物理参数,并与Cvetkovi 'c et al.(2016)的研究数据进行了比较。结果表明,新的轨道解与新的观测数据拟合较好。另外,根据Worley和Heintz(1983年)进行的定性分级,新轨道被归类为“可靠”,这意味着数据覆盖一半以上的轨道,并有足够数量的测量残差。

英文摘要:

The results of the study of the binary HIP 18856 and construction of its orbit are presented. New observational data obtained at the BTA of SAO RAS in 2007-2019. Earlier Cvetkovi'c et al. (2016) constructed orbit for this system. However, it is based on 6 measurements, which cover a small part of the orbit. The positional parameters of the Hipparcos (ESA 1997) astrometric satellite, published speckle interferometric data (Mason et al. 1999; Balega et al. 2006, 2007; Horch et al. 2012, 2017) and new ones were used in this study. Based on the new orbital parameters, the mass sum was calculated, and the physical parameters of the components were found. The obtained orbital and fundamental parameters were compared with the data from the study by Cvetkovi'c et al. (2016). The comparison shows that the new orbital solution is better than the old one, since it fits new observational data accurately. Also based on the qualitative grade performed by Worley & Heintz (1983) new orbit was classified as "reliable", which means data covering more than half of the orbit with sufficient quantities of residuals of measurements.

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