SIMULATION OF THE H$\alpha$ ABSORPTION FOR THE HOT JUPITER HAT-P-32 B
Секция: EXOPLANETS
Аннотация и ключевые слова
Аннотация (русский):
The paper presents the results of modeling the absorption spectrum in the H$\alpha$ and He 10830 Å lines for the hot Jupiter HAT-P-32 b. The simulation was carried out using a 3D hydrodynamic model coupled to a Monte Carlo model of Ly$\alpha$ photon transfer. It was determined that to explain the absorption in both lines at a ratio ${\rm H}/{\rm He}=99/1$, high values of the XUV flux and stellar Ly$\alpha$ flux are required: $F_{\rm XUV}=100$ erg cm$^{-2}$ s$^{-1}$ and $I_{\rm Ly\alpha}=600$ erg cm$^{-2}$ s$^{-1}$, which may indicate high activity of the star. New parameters were also found that describe the absorption at ${\rm H}/{\rm He}=97/3$ while requiring less extreme $F_{\rm XUV}=25$ erg cm$^{-2}$ s$^{-1}$ and $I_{\rm Ly\alpha}=600$ erg cm$^{-2}$ s$^{-1}$. Monte Carlo modeling showed that the absorption in the H$\alpha$ line is formed by stellar photons producing H(2) concentrations at a level of $10^2$–$10^3$ cm$^{-3}$ in the atmospheric layer up to $2R_{\rm p}$, where the absorption occurs.

Ключевые слова:
planets and satellites: atmospheres; radiative transfer; scattering; hydrodynamics
Список литературы

1. Czesla S., Lampon M., Sanz-Forcada J., et al., 2022, Astronomy & Astrophysics, 657, id. A6

2. Linsky J.L., France K., Ayres T., 2013, Astrophysical Journal, 766, 2, id. A69

3. Miroshnichenko I.B., Shaikhislamov I.F., Berezutskii A.G., et al., 2021, Astronomy Reports, 65, p. 61

4. Shaikhislamov I.F., Khodachenko M.L., Lammer H., et al., 2020, Monthly Notices of the Royal Astronomical Society, 491, p. 3435

5. Yan D., Guo J., Seon K., et al., 2024, Astronomy and Astrophysics, 686, id. A208

6. Zhang Z., Morley C.V., Gully-Santiago M., et al., 2023, Science Advances, 9, id. eadf8736

Войти или Создать
* Забыли пароль?