In-transit Lyα absorption by HD 209458b under different regimes of the planetary and stellar winds interaction
- Author(s)
- Maxim Khodachenko, Ildar Shaikhislamov, Navin Dwivedi, Helmut Lammer, Kristina Kislyakova, Luca Fossati, Colin Johnstone, Oleksyi Arkhypov, Artem Berezutsky, Ilya Miroshnichenko, Vitaly Posukh
- Abstract
The interaction of an escaping upper atmosphere of a hydrogen rich non-magnetized analogue of HD209458b with the stellar wind of its host G-type star is simulated with a 2D axisymmetric multi-fluid hydrodynamic model. Different regimes of the planetary upper atmospheric material escape, depending on the parameters of the stellar wind and XUV flux are considered. The performed simulations enable calculating of the Lyα absorption during transits of HD209458b and quantifying the major mechanisms responsible for its observed features.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Österreichische Akademie der Wissenschaften (ÖAW), Anuchin Research Institute and Museum of Anthropology, Russian Academy of Sciences
- Publication date
- 09-2018
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/8ea7de79-1620-427d-83c5-d59af64120ae