Zobrazeno 1 - 10
of 249
pro vyhledávání: '"Shenavrin, V."'
Autor:
Maslennikova, N. A., Tatarnikov, A. M., Tatarnikova, A. A., Dodin, A. V., Shenavrin, V. I., Burlak, M. A., Zheltoukhov, S. G., Strakhov, I. A.
The results of photometric and spectral observations of T CrB obtained in a wide range of wavelengths in 2011-2023 are presented. We use the near-IR light curves to determine a new ephemeris $JD_{min} = 2455828.9 + 227.55 \times E$ for the times of l
Externí odkaz:
http://arxiv.org/abs/2308.10011
Autor:
Arkhipova, V. P., Ikonnikova, N. P., Shenavrin, V. I., Burlak, M. A., Tatarnikov, A. M., Tsvetkov, D. Yu., Belinskii, A. A., Pavlyuk, N. N., Shugarov, S. Yu.
We present the results of a new stage of the long-term photometric study of FG Sge which is a quickly evolving central star of the planetary nebula Hen 1-5. Our new observations carried out on the SAI MSU telescopes in the optical ($BVR_CI_C$) and in
Externí odkaz:
http://arxiv.org/abs/2206.02493
Autor:
Pollock, A. M. T., Corcoran, M. F., Stevens, I. R., Russell, C. M. P., Hamaguchi, K., Williams, P. M., Moffat, A. F. J., Weigelt, G., Shenavrin, V., Richardson, N. D., Espinoza, D., Drake, S. A.
WR 140 is a long-period, highly eccentric Wolf-Rayet star binary system with exceptionally well-determined orbital and stellar parameters. Bright, variable X-ray emission is generated in shocks produced by the collision of the winds of the WC7pd+O5.5
Externí odkaz:
http://arxiv.org/abs/2109.10350
Autor:
Skopal, A., Shugarov, S. Yu., Munari, U., Masetti, N., Marchesini, E., Komzik, R. M., Kundra, E., Shagatova, N., Tarasova, T. N., Buil, C., Boussin, C., Shenavrin, V. I., Hambsch, F. -J., Dallaporta, S., Frigo, A., Garde, O., Zubareva, A., Dubovský, P. A., Kroll, P.
Publikováno v:
A&A 636, A77 (2020)
The star V426 Sge (HBHA~1704-05), originally classified as an emission-line object and a semi-regular variable, brightened at the beginning of August 2018, showing signatures of a symbiotic star outburst. We aim to confirm the nature of V426 Sge as a
Externí odkaz:
http://arxiv.org/abs/2003.10135
Autor:
Arkhipova, V. P., Burlak, M. A., Ikonnikova, N. P., Komissarova, G. V., Esipov, V. F., Shenavrin, V. I.
We present the results of a new epoch of a long-term photometric monitoring of the variable planetary nebula IC~4997. The integral $UBV$ light curves display a continuing brightening of 0.$^{m}15$ in $V$, a slight rise (<0.$^{m}1$) in $B$, and consta
Externí odkaz:
http://arxiv.org/abs/2002.10005
Publikováno v:
Astron. Lett. 45, No 4, 197-207, (2019)
We present results of a study of the correlation between the infrared (JHKL) and optical(B) fluxes of the nucleus of the Seyfert galaxy NGC 4151 for the years 2010 - 2015 using our own data (partially published) in combination with published data of
Externí odkaz:
http://arxiv.org/abs/1904.11674
Autor:
Pakhomov, Yu. V., Shenavrin, V. I., Bondar', N. I., Antonyuk, K. A., Pit', N. V., Belan, S. P., Gorda, S. Yu.
Publikováno v:
Astronomy Letters, 2019, Vol.45, No.3, pp.156-163
Based on the multiband (BVRIJHKL) photometric observations of the active red giant PZ Mon performed for the first time in the winter season of 2017-2018, we have determined the main characteristics of the spotted stellar surface in a parametric three
Externí odkaz:
http://arxiv.org/abs/1904.08860
Autor:
He, J. H., Kamiński, T., Mennickent, R. E., Shenavrin, V. I., Mardones, Diego, Wang, Wei, Tang, Baitian, Schmidt, M. R., Szczerba, R., Ge, Jixing.
Temporal variation of millimeter lines is a new direction of research for evolved stars. It has the potential to probe the dynamical wind launching processes from time dimension. We report here the first ALMA (Atacama Large Millimeter Array) results
Externí odkaz:
http://arxiv.org/abs/1904.07114
Autor:
Petrov, P. P., Grankin, K. N., Gameiro, J. F., Artemenko, S. A., Babina, E. V., de Albuquerque, R. M. G., Djupvik, A. A., Gahm, G. F., Shenavrin, V. I., Irsmambetova, T. R., Fernandez, M., Mkrtichian, D. E., Gorda, S. Yu.
Classical T Tauri stars with ages of less than 10 Myr possess accretion discs. Magnetohydrodynamic processes at the boundary between the disc and the stellar magnetosphere control the accretion and ejections gas flows. We carried out a long series of
Externí odkaz:
http://arxiv.org/abs/1811.08635
Autor:
Dodin, A., Grankin, K., Lamzin, S., Nadjip, A., Safonov, B., Shakhovskoi, D., Shenavrin, V., Tatarnikov, A., Vozyakova, O.
Publikováno v:
MNRAS, Vol. 482, p. 5524 (2019)
Results of $UBVRIJHKLM$ photometry and $VRI$ polarimetry of a young star RW Aur A observed during unprecedented long and deep (up to $\Delta V \approx 5$ mag) dimming events in 2010-11 and 2014-18 are presented. The polarization degree $p$ of RW Aur
Externí odkaz:
http://arxiv.org/abs/1811.00449