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of 2 547
pro vyhledávání: '"gravity mode"'
Gravito-inertial asteroseismology saw its birth from the 4-years long light curves of rotating main-sequence stars assembled by the Kepler space telescope. High-precision measurements of internal rotation and mixing are available for about 600 stars
Externí odkaz:
http://arxiv.org/abs/2410.05367
Autor:
Farrell, Eoin, Buldgen, Gaël, Meynet, Georges, Eggenberger, Patrick, Dupret, Marc-Antoine, Bowman, Dominic M.
We present a method for a non-linear asteroseismic inversion suitable for gravity-mode pulsators and apply it to slowly pulsating B-type (SPB) stars. Our inversion method is based on the iterative improvement of a parameterised static stellar structu
Externí odkaz:
http://arxiv.org/abs/2404.12052
Autor:
Breton, Sylvain N., Dhouib, Hachem, García, Rafael A., Brun, Allan Sacha, Mathis, Stéphane, Hernández, Fernando Pérez, Mathur, Savita, Dyrek, Achrène, Santos, Angela R. G., Pallé, Pere L.
Gravity modes (g modes), mixed gravito-acoustic modes (mixed modes), and gravito-inertial modes (gi modes) possess unmatched properties as probes for stars with radiative interiors. The structural and dynamical constraints that they are able to provi
Externí odkaz:
http://arxiv.org/abs/2309.15691
This paper reports estimated stellar parameters of 1,153 Kepler red giant branch stars determined with asteroseismic modeling. We use radial-mode oscillation frequencies, gravity-mode period spacings, Gaia luminosities, and spectroscopic data to char
Externí odkaz:
http://arxiv.org/abs/2307.03397
Calibrating angular momentum transport in intermediate-mass stars from gravity-mode asteroseismology
Autor:
Mombarg, Joey S. G.
Publikováno v:
A&A 677, A63 (2023)
The physical mechanisms driving the transport of angular momentum in stars are not fully understood, as current models cannot explain the observed stellar rotation profiles across all stages of evolution. By making use of pulsating F-type dwarfs, thi
Externí odkaz:
http://arxiv.org/abs/2306.17211
Publikováno v:
A&A 675, A17 (2023)
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 models of t
Externí odkaz:
http://arxiv.org/abs/2305.09624
Publikováno v:
A&A 672, A183 (2023)
Gravito-inertial asteroseismology saw its birth thanks to high-precision CoRoT and Kepler space photometric light curves. So far, it gave rise to the internal rotation frequency of a few hundred intermediate-mass stars, yet only several tens of these
Externí odkaz:
http://arxiv.org/abs/2302.07870
Akademický článek
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Publikováno v:
A&A 670, L16 (2023)
Despite their importance in stellar evolution, little is known about magnetic fields in the interior of stars. The recent seismic detection of magnetic fields in the core of several red giant stars has given measurements of their strength and informa
Externí odkaz:
http://arxiv.org/abs/2301.01308
Autor:
Uzundag, Murat, Silvotti, Roberto, Baran, Andrzej S., Vuckovic, Maja, Nemeth, Péter, Sahoo, Sumanta K., Reed, Mike
TIC033834484 and TIC309658435 are long-period pulsating subdwarf B star, which were observed extensively (675 and 621 days, respectively) by the Transiting Exoplanet Survey Satellite (TESS). The high-precision photometric light curve reveals the pres
Externí odkaz:
http://arxiv.org/abs/2212.02950