| Research on the HIP 18856 binary system |
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| 作者姓名： | Polina Efremova Arina Mitrofanova Vladimir Dyachenko Anatoly Beskakotov Alexander Maksimov Denis Rastegaev Yury BalegaSergey Komarinsky |
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| 作者单位： | Kazan Federal University;Special Astrophysical Observatory of the Russian Academy of Sciences |
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| 基金项目： | funded by RFBR,project number 20–32–70120;Funding for the DPAC has been provided by national institutions,in particular the institutions participating in the Gaia Multilateral Agreement。 |
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| 摘 要： | The results of a study on the binary HIP 18856 and construction of its orbit are presented.New observational data were obtained at the BTA of SAO RAS in 2007-2019.Earlier,Cvetkovic et al.constructed the orbit for this system.However,it is based on six measurements,which cover a small part of the orbit.The positional parameters of the ESA astrometric satellite Hipparcos published speckle interferometric data(Mason et al.,Balega et al.,Horch et al.)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 Cvetkovic et al..The comparison shows that the new orbital solution is better than the old one,since it fits new observational data accurately.Also based on a qualitative evaluation performed by Worley&Heintz,the new orbit was classified as"reliable",which means data cover more than half of the orbit with sufficient quantities of residuals of measurements.
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| 关 键 词： | techniques:high angular resolution speckle interferometry stars:low-mass fundamental parameters stars:binaries:spectroscopic stars:individual:HIP 18856 |
Research on the HIP 18856 binary system |
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| Polina Efremova,Arina Mitrofanova,Vladimir Dyachenko,Anatoly Beskakotov,Alexander Maksimov,Denis Rastegaev,Yury BalegaSergey Komarinsky.Research on the HIP 18856 binary system[J].Research in Astronomy and Astrophysics,2021(3):69-72. |
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| Abstract: | The results of a study on the binary HIP 18856 and construction of its orbit are presented.New observational data were obtained at the BTA of SAO RAS in 2007-2019.Earlier,Cvetkovic et al.constructed the orbit for this system.However,it is based on six measurements,which cover a small part of the orbit.The positional parameters of the ESA astrometric satellite Hipparcos published speckle interferometric data(Mason et al.,Balega et al.,Horch et al.) 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 Cvetkovic et al..The comparison shows that the new orbital solution is better than the old one,since it fits new observational data accurately.Also based on a qualitative evaluation performed by Worley Heintz,the new orbit was classified as "reliable",which means data cover more than half of the orbit with sufficient quantities of residuals of measurements. |
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