Physical and Chemical Vertical Structure of Magnetostatic Accretion Disks of Young Stars
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Physical and Chemical Vertical Structure of Magnetostatic Accretion Disks of Young Stars
|
|
| Автор |
Khaibrakhmanov, S. A.
Dudorov, A. E. Vasyunin, A. I. Kiskin, M. Y. |
|
| Тематика |
ACCRETION DISKS
CHEMICAL MODELING MAGNETIC FIELD MAGNETOHYDRODYNAMICS (MHD) |
|
| Описание |
Abstract: The vertical structure of accretion disks of young stars with fossil large-scale magnetic field is studied. The equations of magnetostatic equilibrium of the disk are solved taking into account the stellar gravity, gas and magnetic pressure, turbulent heating, and heating by stellar radiation. The modelled physical structure of the disk is used to simulate its chemical structure, in particular, to study the spatial distribution of CN molecules. The disk of the typical T Tauri-type star is considered. Calculations show that the temperature within the disk in the region r < 50 au decreases with height and density profiles are steeper than in the isothermal case. Outside the “dead” zone, vertical profiles of the azimuthal component of the magnetic field are nonmonotonic, and the magnetic field strength maximum is reached within the disk. The magnetic pressure gradient can cause an increase in the disk thickness in comparison with the hydrostatic one. The CN molecule concentration is maximum near the photosphere and in the disk atmosphere where the magnetic field strength at the chosen parameters is ~0.01 G. Measurements of Zeeman splitting of CN lines in the submm range can be used to determine the magnetic field strength in these regions of accretion disks. © 2021, Allerton Press, Inc.
Ministry of Education and Science of the Russian Federation, Minobrnauka, (075-15-2020-780, 780-10) Russian Science Foundation, RSF, (19-72-10012) Government Council on Grants, Russian Federation Funding text 1: Vasyunin acknowledges the support of the Russian Science Foundation, project no. 19-72-10012. Funding text 2: Khaibrakhmanov acknowledges the support of the Government of the Russian Federation and the Ministry of Higher Education and Science of the Russian Federation, project no. 075-15-2020-780 (N13.1902.21.0039, contract no. 780-10). |
|
| Дата |
2024-04-08T11:07:37Z
2024-04-08T11:07:37Z 2022 |
|
| Тип |
Article
Journal article (info:eu-repo/semantics/article) info:eu-repo/semantics/submittedVersion |
|
| Идентификатор |
Khaibrakhmanov, SA, Dudorov, AE, Vasyunin, AI & Kiskin, MY 2021, 'Physical and Chemical Vertical Structure of Magnetostatic Accretion Disks of Young Stars', Bulletin of the Lebedev Physics Institute, Том. 48, № 10, стр. 312-316. https://doi.org/10.3103/S1068335621100067
Khaibrakhmanov, S. A., Dudorov, A. E., Vasyunin, A. I., & Kiskin, M. Y. (2021). Physical and Chemical Vertical Structure of Magnetostatic Accretion Disks of Young Stars. Bulletin of the Lebedev Physics Institute, 48(10), 312-316. https://doi.org/10.3103/S1068335621100067 1068-3356 Final All Open Access; Green Open Access https://arxiv.org/pdf/2210.12667 https://arxiv.org/pdf/2210.12667 http://elar.urfu.ru/handle/10995/131490 47531841 10.3103/S1068335621100067 85120156091 000723645600004 |
|
| Язык |
en
|
|
| Связанные ресурсы |
info:eu-repo/grantAgreement/RSF//19-72-10012
|
|
| Права |
Open access (info:eu-repo/semantics/openAccess)
|
|
| Формат |
application/pdf
|
|
| Издатель |
Pleiades journals
|
|
| Источник |
Bulletin of the Lebedev Physics Institute
Bulletin of the Lebedev Physics Institute |
|