Convection Theory and Relevant Problems in Stellar Structure, Evolution, and Pulsational Stability I Convection Theory and Structure of Convection Zone and Stellar Evolution

Autor: Da-run Xiong

Publikováno v: Frontiers in Astronomy and Space Sciences, Vol 7 (2021)

A non-local and time-dependent theory of convection was briefly described. This theory was used to calculate the structure of solar convection zones, the evolution of massive stars, lithium depletion in the atmosphere of the Sun and late-type dwarfs,

Externí odkaz: https://doaj.org/article/8436a710bd5740788532209e7c7a35d2

Establishing the accuracy of asteroseismic mass and radius estimates of giant stars – II. Revised stellar masses and radii for KIC 8430105

Autor: J S Thomsen, K Brogaard, T Arentoft, D Slumstrup, M N Lund, F Grundahl, A Miglio, J Jessen-Hansen, S Frandsen

Publikováno v: Thomsen, J S, Brogaard, K, Arentoft, T, Slumstrup, D, Lund, M N, Grundahl, F, Miglio, A, Jessen-Hansen, J & Frandsen, S 2022, ' Establishing the accuracy of asteroseismic mass and radius estimates of giant stars-II. Revised stellar masses and radii for KIC 8430105 ', Monthly Notices of the Royal Astronomical Society, vol. 517, no. 3, pp. 4187-4201 . https://doi.org/10.1093/mnras/stac2942

Asteroseismic scaling relations can provide high-precision measurements of mass and radius for red giant (RG) stars displaying solar-like oscillations. Their accuracy can be validated and potentially improved using independent and accurate observatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95e7fbd96952990817a570d1f82f1545
https://doi.org/10.1093/mnras/stac2942

Evolution of dipolar mixed-mode coupling factor in red giant stars: impact of buoyancy spike

Autor: C Jiang, M Cunha, J Christensen-Dalsgaard, Q S Zhang, L Gizon

Publikováno v: Monthly Notices of the Royal Astronomical Society
Jiang, C, Cunha, M, Christensen-Dalsgaard, J, Zhang, Q S & Gizon, L 2022, ' Evolution of dipolar mixed-mode coupling factor in red giant stars : impact of buoyancy spike ', Monthly Notices of the Royal Astronomical Society, vol. 515, no. 3, pp. 3853-3866 . https://doi.org/10.1093/mnras/stac2065

Mixed modes observed in red giants allow for investigation of the stellar interior structures. One important feature in these structures is the buoyancy spike caused by the discontinuity of the chemical gradient left behind during the first dredge-up

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd7b6ee594c69b1b79f29d1f73681865
https://doi.org/10.1093/mnras/stac2065

Feasibility of structure inversions for gravity-mode pulsators

Autor: Vanlaer, V., Aerts, C., Bellinger, E. P., Christensen-Dalsgaard, J.

Publikováno v: Astronomy & Astrophysics, 675, pp. 1-20
Vanlaer, V, Aerts, C, Bellinger, E P & Christensen-Dalsgaard, J 2023, ' Feasibility of structure inversions for gravity-mode pulsators ', Astronomy and Astrophysics, vol. 675, A17 . https://doi.org/10.1051/0004-6361/202245597

Context. Gravity-mode asteroseismology has significantly improved our understanding of mixing in intermediate mass stars. However, theoretical pulsation periods of stellar models remain in tension with observations, and it is often unclear how the mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df381525e2eb9801118ad24c1dcedcb1

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.