Zobrazeno 1 - 10
of 700
pro vyhledávání: '"Romanova M"'
We study the evolution of eccentricity and inclination of massive planets in low-density cavities of protoplanetary discs using three-dimensional (3D) simulations. When the planet's orbit is aligned with the equatorial plane of the disc, the eccentri
Externí odkaz:
http://arxiv.org/abs/2406.18834
Autor:
Petrov, P. P., Grankin, K. N., Babina, E. V., Artemenko, S. A., Romanova, M. M., Gorda, S. Yu., Djupvik, A. A., Gameiro, J. F.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2023, V.524, pp.5944-5953
Spectral and photometric variability of the Classical T Tauri stars RY Tau and SU Aur from 2013 to 2022 is analyzed. We find that in SU Aur the H-alpha line's flux at radial velocity RV = -50 +- 7 km/s varies with a period P = 255 +- 5 days. A simila
Externí odkaz:
http://arxiv.org/abs/2308.08899
Autor:
Pokorný, P., Novotný, M., Hruška, M., More-Chevalier, J., Fitl, P., Dekhtyar, Y., Romanova, M., Kiba, T., Kawamura, M., Vrňata, M., Vacík, J., Lančok, J.
Publikováno v:
In Vacuum September 2024 227
Autor:
Espaillat, C. C., Robinson, C. E., Romanova, M. M., Thanathibodee, T., Wendeborn, J., Calvet, N., Reynolds, M., Muzerolle, J.
Publikováno v:
Nature volume 597, pages 41-44 (2021)
Magnetospheric accretion models predict that matter from protoplanetary disks accretes onto the star via funnel flows which follow the stellar field lines and shock on the stellar surface leaving a hot spot with a density gradient. Previous work has
Externí odkaz:
http://arxiv.org/abs/2109.00510
Autor:
Neuman, V., Vavra, D., Drnkova, L., Pruhova, S., Plachy, L., Kolouskova, S., Obermannova, B., Amaratunga, S.A., Konecna, P., Vyzralkova, J., Venhacova, P., Pomahacova, R., Paterova, P., Stichova, L., Skvor, J., Kocourkova, K., Romanova, M., Vosahlo, J., Strnadel, J., Polockova, K., Neumann, D., Slavenko, M., Sumnik, Z.
Publikováno v:
In Diabetes Research and Clinical Practice February 2024 208
Autor:
Petrov, P. P., Romanova, M. M., Grankin, K. N., Artemenko, S. A., Babina, E. V., Gorda, S. Yu.
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:
http://arxiv.org/abs/2104.00433
Autor:
Kurosawa Ryuichi, Romanova M. M.
Publikováno v:
EPJ Web of Conferences, Vol 64, p 04004 (2014)
We discuss key observational signatures of Classical T Tauri stars (CTTSs) accreting through Rayleigh-Taylor instability, which occurs at the interface between an accretion disk and a stellar magnetosphere. In this study, the results of global 3-D MH
Externí odkaz:
https://doaj.org/article/5cf876a7ee884e55bd921b95ccd0206b
Publikováno v:
EPJ Web of Conferences, Vol 64, p 05008 (2014)
We investigated the boundary between stable and unstable regimes of accretion and its dependence on different parameters. Simulations were performed using a “cubed sphere" code with high grid resolution (244 grid points in the azimuthal direction),
Externí odkaz:
https://doaj.org/article/00795093e0a44871b8cd80c344700167
Publikováno v:
EPJ Web of Conferences, Vol 64, p 05009 (2014)
We observed persistent high-frequency oscillations of the boundary layer near an accreting, weakly-magnetized star in global 3D MHD simulations. The tilted dipole magnetic field is not strong enough to open a gap between the star and the disk. Instea
Externí odkaz:
https://doaj.org/article/3cbdd64112354301bceacccbac7b6be6
Autor:
Romanova M. M., Lovelace R. V. E., Bachetti M., Blinova A. A., Koldoba A. V., Kurosawa R., Lii P. S., Ustyugova G. V.
Publikováno v:
EPJ Web of Conferences, Vol 64, p 05001 (2014)
We review recent axisymmetric and three-dimensional (3D) magnetohydrodynamic (MHD) numerical simulations of magnetospheric accretion, plasma-field interaction and outflows from the disk-magnetosphere boundary.
Externí odkaz:
https://doaj.org/article/9ee39f2d0297444cb2de89c3c53105d4