Cyclical Changes in the Extraeclipse Brightness and the Period of W UMa-TYPE Close Binary System AM Leo

Autor: S. Yu. Gorda

Publikováno v: Astronomy Reports. 64:922-935

The results of 14-year photometric monitoring of the contact close binary system (CBS) W UMa-type AM Leo are presented. Low-amplitude cyclic variations in brightness with a period of $$7.6 \pm 0.3$$ years, not associated with the phenomena of eclipse

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::084b83c10babd73a0dcf0c18cc692913
https://doi.org/10.1134/s1063772920110037

Modulated accretion in T Tauri star RY Tau -- stable MHD propeller or a planet at 0.2 AU?

Autor: Marina M. Romanova, S. Yu. Gorda, K. N. Grankin, P. P. Petrov, E. V. Babina, S. A. Artemenko

Planets are thought to form at the early stage of stellar evolution when the mass accretion is still ongoing. RY Tau is a T Tauri type star at the age of a few Myr, with accretion disc seen at high inclination, so that line of sight crosses both the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a26d03c04f72dff0521a99ab94b8a31

MASSIVE ECLIPSED VARIABLE UU CAS — IN THE LIGHT OF NEW DATA

Autor: S. Yu. Gorda, T. S. Polushina

Publikováno v: Proceedings of the 48-th International student's conferences "Physics of Space".

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::49cc1c5e16410e69775616f36cb4b6ab
https://doi.org/10.15826/b978-5-7996-2935-9.48

Dynamics of wind and the dusty environments in the accreting T Tauri stars RY Tauri and SU Aurigae

Autor: Gösta F. Gahm, K. N. Grankin, A. A. Djupvik, T. R. Irsmambetova, P. P. Petrov, V. I. Shenavrin, S. A. Artemenko, E. V. Babina, J. F. Gameiro, David Mkrtichian, R. M. G. de Albuquerque, M. Fernandez, S. Yu. Gorda

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname
Mon. Not. R. Astron. Soc.
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 483 (1), pp.132-146. ⟨10.1093/mnras/sty3066⟩

Classical T Tauri stars with ages of less than 10 Myr possess accretion discs. Magnetohydro-dynamic processes at the boundary between the disc and the stellar magnetosphere control the accretion and ejections gas flows. We carried out a long series o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4783d94db2f4d8950d4b0214ac7236d4
http://hdl.handle.net/10261/189369

Radial velocity curve of the spectroscopic binary HD 25639 (ADS 2984A)

Autor: S. Yu. Gorda

Publikováno v: Astronomy Letters. 42:693-702

We present the results of the reduction of our observations for the spectroscopic binary ADS 2984A (B0 II–B0 III), which along with its visual component ADS 2984B (SZ Cam) are the brightest members of the open star cluster NGC 1502. The spectroscop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b6d5890105dd968962a44e63d94297b
https://doi.org/10.1134/s1063773716100042