Bayesian rotation inversion of KIC 11145123
arXiv:2112.12341 · doi:10.3847/1538-4357/ac4699
Abstract
A scheme of Bayesian rotation inversion, which allows us to compute the probability of a model of a stellar rotational profile, is developed. The validation of the scheme with simple rotational profiles and the corresponding sets of artificially generated rotational shifts has been successfully carried out, and we can correctly distinguish the (right) rotational model, prepared beforehand for generating the artificial rotational shifts, with the other (wrong) rotational model. The Bayesian scheme is applied to a gamma Dor-delta Sct type hybrid star, KIC 11145123, leading to a result that the convective core of the star might be rotating much faster (~ 10 times faster) than the other regions of the star. The result is consistent with that previously suggested by Hatta et al. (2019) based on a 3-zone modeling, further strengthening their argument from a Bayesian point of view.
arXiv comment13 pages, 12 figures, 3 tables, accepted for publication in ApJ
References in corpus (30)
- Kepler Mission Design, Realized Photometric Performance, and Early Science
- GYRE: An open-source stellar oscillation code based on a new Magnus Multiple Shooting Scheme
- Fast core rotation in red-giant stars revealed by gravity-dominated mixed modes
- Spin down of the core rotation in red giants
- Slowing the Spins of Stellar Cores
- Angular Momentum Transport in Stellar Interiors
- Angular momentum transport within evolved low-mass stars
- Asteroseismic measurement of surface-to-core rotation in a main sequence A star, KIC 11145123
- Asteroseismic measurement of slow, nearly-uniform surface-to-core rotation in the main sequence F star KIC 9244992
- Signatures of internal rotation discovered in the Kepler data of five slowly pulsating B stars
- Nearly-uniform internal rotation of solar-like main-sequence stars revealed by space-based asteroseismology and spectroscopic measurements
- Asteroseismic detection of latitudinal differential rotation in 13 Sun-like stars
- γ Doradus stars as test of angular momentum transport models
- Asteroseismic modelling of the two F-type hybrid pulsators KIC10080943A and KIC10080943B
- On the Differential Rotation of Massive Main Sequence Stars
- Constraining the efficiency of angular momentum transport with asteroseismology of red giants: the effect of stellar mass
- Results of a Search for gamma Dor and delta Sct Stars with the Kepler Spacecraft
- Rotation of the convective core in Dor stars measured by dips in period spacings of g modes coupled with inertial modes
- Gravity-mode period spacings and near-core rotation rates of 611 Doradus stars with \textit{Kepler}
- Seismic evidence for near solid-body rotation in two Kepler subgiants and implications for angular momentum transport
- Deciphering the oscillation spectrum of Doradus and SPB stars
- Implications of Rapid Core Rotation in Red Giants for Internal Angular Momentum Transport in Stars
- The rotational shear layer inside the early red-giant star KIC 4448777
- Shape of a slowly rotating star measured by asteroseismology
- The two-dimensional internal rotation of KIC11145123
- Asteroseismic inversions for radial differential rotation of Sun-like stars: Sensitivity to uncertainties
- Asteroseismic inversions for radial differential rotation of Sun-like stars: ensemble fits
- Inferring solar differential rotation through normal-mode coupling using Bayesian statistics
- Probabilistic Inversions for Time-Distance Helioseismology
- Non-standard modeling of a possible blue straggler star, KIC 11145123