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New Look at the Structure of the Nearest Circumstellar Environment of the Weak-Line T Tauri Star V718 Perстатья
- Авторы: Grinin V.P., Safonov B.S., Efimova N.V., Barsunova O.Yu, Strachov I.A., Borman G.A., Shugarov S.Yu
- Журнал: Astronomy Reports
- Том: 68
- Номер: 10
- Год издания: 2024
- Издательство: Pleiades Publishing, Inc.
- Местоположение издательства: New York, USA
- Первая страница: 995
- Последняя страница: 1002
- DOI: 10.1134/S1063772924700860
- Аннотация: In this paper, we have analyzed the properties of the photometric and spectral variability of youngstar V718 Per, a member of the cluster IC 348, in terms of its possible binarity. The most realistic is the modelwhere the main component of the V718 Per A system—with an effective temperature of 5200 K—is periodi-cally shielded by two extended dust structures consisting of large particles and moving around the star in res-onance with two planets. Their orbital periods are 4.7 years and 213 days. Their ratio with high accuracy isequal to 1 : 8, and the ratio of the large semi-axes is 1 : 4. The masses of the planets have not exceeded 6 M_JupAt the moments of total eclipses V718 Per A, the radiation of the system has been dominated by a colder com-ponent with an effective temperature 4150+\-100 of K, which has explained the reddening of the star observedin the brightness minima, as well as its spectral changes during brightness weakening. Speckle interferometricobservations performed using the 2.5-m telescope of the Sternberg Astronomical Institute have made it pos-sible to estimate the upper limit of the angular distance between the components of the system: ≤0.1 , whichis equivalent to a projection distance of ≤30 AU. The unique feature of this system has been that the planes ofthe planetary orbits practically coincide with the line of sight. Such an orientation of the system has been mostfavorable for measuring fluctuations in the radial velocity of a star caused by the orbital motion of planets, aswell as for observing planetary transits along the disk of the main component of the system
- Добавил в систему: Шугаров Сергей Юрьевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Гринин2024.pdf | 1,1 МБ | 16 января 2025 [s_shugarov] | |
| 2. | Полный текст | Grinin_2024.pdf | 502,3 КБ | 16 января 2025 [s_shugarov] |