Confirmation of the New Evolutionary Status of UU Cas
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
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Confirmation of the New Evolutionary Status of UU Cas
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| Автор |
Gorda, S. Y.
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| Тематика |
CLOSE BINARY SYSTEMS
ECLIPSING VARIABLE STARS RADIAL VELOСITY SPECTROSCOPIC BINARY |
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| Описание |
Abstract: A new spectral study of the close binary system (CBS) UU Cas with massive components was carried out, based on spectra obtained on the echelle spectrometer of the 1.2-m telescope of Kourovka Astronomical Observatory of UFU from 2017 to 2022. The results of this study confirm the new evolutionary status of UU Cas, previously determined by the author based on spectrophotometry of this system in 2017 and confirmed in a number of works by other researchers, according to which the system is in the final stage of the mass exchange process, and not at its beginning, as previously thought. Its components are not very massive, and the value of their mass ratio is the opposite of what was previously determined from photometry results. The values of the half-amplitudes of the radial velocities K1 = 195.6 km/s, K2 = 106.5 km/s and the masses of both components M1 = 9.6(Formula Presented.) , M2 = 17.6(Formula Presented.)obtained on a much more extensive observational material, for the orbital inclination angle i = 74.5°, given recently in the literature, as well as the orbital radius A = 54(Formula Presented.) of this close binary system are comparable with the values previously found by the author. The article is based on a talk presented at the astrophysical memorial seminar “Novelties in Understanding the Evolution of Binary Stars,” dedicated to the 90th anniversary of Professor M.A. Svechnikov. © 2023, The Author(s).
Ministry of Education and Science of the Russian Federation, Minobrnauka: FEUZ-2023-0019 The work was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation, topic FEUZ-2023-0019. |
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| Дата |
2024-04-05T16:37:29Z
2024-04-05T16:37:29Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) |info:eu-repo/semantics/publishedVersion |
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| Идентификатор |
Gorda, S 2023, 'Confirmation of the New Evolutionary Status of UU Cas', Astronomy Reports, Том. 67, № 9, стр. 888-893. https://doi.org/10.1134/S1063772923090056
Gorda, S. (2023). Confirmation of the New Evolutionary Status of UU Cas. Astronomy Reports, 67(9), 888-893. https://doi.org/10.1134/S1063772923090056 1063-7729 Final All Open Access, Hybrid Gold https://www.scopus.com/inward/record.uri?eid=2-s2.0-85179370036&doi=10.1134%2fS1063772923090056&partnerID=40&md5=bfd3217285b7080b8b09e77704e60f5c https://link.springer.com/content/pdf/10.1134/S1063772923090056.pdf http://elar.urfu.ru/handle/10995/131042 10.1134/S1063772923090056 85179370036 001122207000012 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
Pleiades Publishing
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| Источник |
Astronomy Reports
Astronomy Reports |
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