Open Access
Monthly Notices of the Royal Astronomical Society, volume 483, issue 1, pages 132-146
Dynamics of wind and the dusty environments in the accreting T Tauri stars RY Tauri and SU Aurigae
Grankin K. N.
1
,
Gameiro J. F.
2, 3
,
Artemenko S. A.
1
,
Babina E. V.
1
,
De Albuquerque R M G
2, 3, 4
,
Djupvik A. A.
5
,
Gahm G. F.
6
,
Irsmambetova T. R.
7
,
Gorda S. Yu.
8
,
Fernandez M.
9
,
Mkrtichian David
10
,
Shenavrin Victor I.
7
2
Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, PT4150-762 Porto, Portugal
|
3
Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, PT4169-007 Porto, Portugal
|
4
Laboratoire Univers et Théories, Observatoire de Paris, UMR 8102 du CNRS, Université Paris Diderot, F-92190 Meudon, France
|
5
Nordic Optical Telescope, Rambla José Ana Fernández Pérez, 7, 38711 Breña Baja, Spain
|
9
Institute of Astrophysics of Andalusia-CSIC, Glorieta de la Astronomía, 3, 18008 Granada, Spain
|
10
National Astronomical Research Institue of Thailand, 260 Moo 4, T. Donkaew, A. Maerim, Chiangmai, 50180 Thailand
|
Publication type: Journal Article
Publication date: 2018-12-04
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 4.8
ISSN: 00358711, 13652966
Space and Planetary Science
Astronomy and Astrophysics
Abstract
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 simultaneous spectroscopic and photometric observations of the classical T Tauri stars, RY Tauri and SU Aurigae, with the aim to quantify the accretion and outflow dynamics at time-scales from days to years. It is shown that dust in the disc wind is the main source of photometric variability of these stars. In RY Tau, we observed a new effect: during events of enhanced outflow, the circumstellar extinction becomes lower. The characteristic time of changes in outflow velocity and stellar brightness indicates that the obscuring dust is near the star. The outflow activity in both stars is changing on a time-scale of years. Periods of quiescence in the variability of the Hα profile were observed during the 2015–2016 period in RY Tau and during the 2016–2017 period in SU Aur. We interpret these findings in the framework of the magnetospheric accretion model, and we discuss how the global stellar magnetic field can influence the long-term variations of the outflow activity.
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Petrov A. P. C. et al. Dynamics of wind and the dusty environments in the accreting T Tauri stars RY Tauri and SU Aurigae // Monthly Notices of the Royal Astronomical Society. 2018. Vol. 483. No. 1. pp. 132-146.
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Petrov A. P. C., Grankin K. N., Gameiro J. F., Artemenko S. A., Babina E. V., De Albuquerque R. M. G., Djupvik A. A., Gahm G. F., Irsmambetova T. R., Gorda S. Y., Shenavrin V. I., Fernandez M., Mkrtichian D. Dynamics of wind and the dusty environments in the accreting T Tauri stars RY Tauri and SU Aurigae // Monthly Notices of the Royal Astronomical Society. 2018. Vol. 483. No. 1. pp. 132-146.
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TY - JOUR
DO - 10.1093/mnras/sty3066
UR - https://doi.org/10.1093%2Fmnras%2Fsty3066
TI - Dynamics of wind and the dusty environments in the accreting T Tauri stars RY Tauri and SU Aurigae
T2 - Monthly Notices of the Royal Astronomical Society
AU - Petrov, Alexander P Ch
AU - Grankin, K. N.
AU - Gameiro, J. F.
AU - Artemenko, S. A.
AU - Babina, E. V.
AU - De Albuquerque, R M G
AU - Djupvik, A. A.
AU - Gahm, G. F.
AU - Irsmambetova, T. R.
AU - Gorda, S. Yu.
AU - Shenavrin, Victor I.
AU - Fernandez, M.
AU - Mkrtichian, David
PY - 2018
DA - 2018/12/04 00:00:00
PB - Oxford University Press
SP - 132-146
IS - 1
VL - 483
SN - 0035-8711
SN - 1365-2966
ER -
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@article{2018_Petrov,
author = {Alexander P Ch Petrov and K. N. Grankin and J. F. Gameiro and S. A. Artemenko and E. V. Babina and R M G De Albuquerque and A. A. Djupvik and G. F. Gahm and T. R. Irsmambetova and S. Yu. Gorda and Victor I. Shenavrin and M. Fernandez and David Mkrtichian},
title = {Dynamics of wind and the dusty environments in the accreting T Tauri stars RY Tauri and SU Aurigae},
journal = {Monthly Notices of the Royal Astronomical Society},
year = {2018},
volume = {483},
publisher = {Oxford University Press},
month = {dec},
url = {https://doi.org/10.1093%2Fmnras%2Fsty3066},
number = {1},
pages = {132--146},
doi = {10.1093/mnras/sty3066}
}
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MLA
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Petrov, Alexander P. Ch, et al. “Dynamics of wind and the dusty environments in the accreting T Tauri stars RY Tauri and SU Aurigae.” Monthly Notices of the Royal Astronomical Society, vol. 483, no. 1, Dec. 2018, pp. 132-146. https://doi.org/10.1093%2Fmnras%2Fsty3066.
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