On the sensitivity of gravito-inertial modes to differential rotation in intermediate-mass main-sequence stars

Abstract

Context. While rotation has a major impact on stellar structure and evolution, its effects are not well understood. Thanks to high- quality and long timebase photometric observations obtained with recent space missions, we are now able to study stellar rotation more precisely. Aims. We aim to constrain radial differential rotation profiles in gamma Doradus (gamma Dor) stars, and to develop new theoretical seismic diagnosis for such stars with rapid and potentially non-uniform rotation. Methods. We derive a new asymptotic description which accounts for the impact of weak differential near-core rotation on gravity- mode period spacings. The theoretical predictions are illustrated from pulsation computations with the code GYRE and compared with observations of gamma Dor stars. When possible, we also derive the surface rotation rates in these stars by detecting and analysing signatures of rotational modulation, and compute the core-to-surface rotation ratios. Results. Stellar rotation has to be strongly differential before its effects on period spacing patterns can be detected, unless multiple period spacing patterns can be compared. Six stars in our sample exhibit a single unexplained period spacing pattern of retrograde modes. We hypothesise that these are Yanai modes. Finally, we find signatures of rotational spot modulation in the photometric data of eight targets. Conclusions. If only one period spacing pattern is detected and analysed for a star, it is difficult to detect differential rotation. A rigidly rotating model will often provide the best solution. Differential rotation can only be detected when multiple period spacing patterns have been found for a single star or its surface rotation rate is known as well. This is the case for eight stars in our sample, revealing surface-to-core rotation ratios between 0.95 and 1.05.

arXiv comment15 pages, 13 figures. Accepted for publication in Astronomy and Astrophysics

References in corpus (72)

• The chemical composition of the Sun
• Modules for Experiments in Stellar Astrophysics (MESA)
• Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions
• Grids of stellar models with rotation - I. Models from 0.8 to 120 Msun at solar metallicity (Z = 0.014)
• The K2 Mission: Characterization and Early results
• Kepler Mission Design, Realized Photometric Performance, and Early Science
• Presupernova Evolution of Rotating Massive Stars I: Numerical Method and Evolution of the Internal Stellar Structure
• Rotating Massive Main-Sequence Stars I: Grids of Evolutionary Models and Isochrones
• The evolution of rotating stars
• The CoRoT satellite in flight : description and performance
• 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
• Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars
• Seismic evidence for a rapidly rotating core in a lower-giant-branch star observed with Kepler
• Tidal dissipation in rotating giant planets
• Seismic constraints on the radial dependence of the internal rotation profiles of six Kepler subgiants and young red giants
• Seismic diagnostics for transport of angular momentum in stars 1. Rotational splittings from the PMS to the RGB
• Thermohaline instability and rotation-induced mixing. I - Low- and intermediate-mass solar metallicity stars up to the end of the AGB
• Stellar Models with Microscopic Diffusion and Rotational Mixing I: Application to the Sun
• Probing the properties of convective cores through g modes: high-order g modes in SPB and gamma Doradus stars
• Asteroseismic measurement of surface-to-core rotation in a main sequence A star, KIC 11145123
• BRITE-Constellation: nanosatellites for precision photometry of bright stars
• Hydrodynamical stellar models including rotation, internal gravity waves and atomic diffusion. I. Formalism and tests on Pop I dwarfs
• The interior rotation of a sample of gamma Doradus stars from ensemble modelling of their gravity mode period spacings
• Rotating Massive Main-Sequence Stars II: Simulating a Population of LMC early B-type Stars as a Test of Rotational Mixing
• Angular momentum transport by heat-driven g-modes in slowly pulsating B stars
• Tight asteroseismic constraints on core overshooting and diffusive mixing in the slowly rotating pulsating B8.3V star KIC 10526294
• On shear-induced turbulence in rotating stars
• Asteroseismic measurement of slow, nearly-uniform surface-to-core rotation in the main sequence F star KIC 9244992
• Sub-Inertial Gravity Modes in the B8V Star KIC 7760680 Reveal Moderate Core Overshooting and Low Vertical Diffusive Mixing
• Transport and mixing in the radiation zones of rotating stars: I-Hydrodynamical processes
• Rotational mixing in low-mass stars : I Effect of the mu-gradients in main sequence and subgiant Pop I stars
• A new asteroseismic diagnostic for internal rotation in $\gamma$ Doradus stars
• Transport and mixing in the radiation zones of rotating stars II. Axisymmetric magnetic field
• Rotating models of young solar-type stars : Exploring braking laws and angular momentum transport processes
• Theory and evidence of global Rossby waves in upper main-sequence stars: r-mode oscillations in many Kepler stars
• Nearly-uniform internal rotation of solar-like main-sequence stars revealed by space-based asteroseismology and spectroscopic measurements
• Self-consistent 2D models of fast rotating early-type star
• Surface rotation of Kepler red giant stars
• Asteroseismic modelling of the two F-type hybrid pulsators KIC10080943A and KIC10080943B
• The internal rotation profile of the B-type star KIC10526294 from frequency inversion of its dipole gravity modes and statistical model comparison
• On the Differential Rotation of Massive Main Sequence Stars
• An algorithm for computing the 2D structure of fast rotating stars
• The interior angular momentum of core hydrogen burning stars from gravity-mode oscillations
• Gravity modes in rapidly rotating stars. Limits of perturbative methods
• Influence of the Coriolis force on the instability of slowly pulsating B stars
• The surface nitrogen abundance of a massive star in relation to its oscillations, rotation, and magnetic field
• On the Numerical Treatment and Dependence of Thermohaline Mixing in Red Giants
• On the Structure and Properties of Differentially Rotating Main-Sequence Stars in the 1-2 M_sun Range
• The BRITE Constellation nanosatellite mission: Testing, commissioning and operations
• The dynamics of the radiative envelope of rapidly rotating stars. I. A spherical Boussinesq model
• The thermohaline, Richardson, Rayleigh-Taylor, Solberg-Hoiland, and GSF criteria in rotating stars
• CoRoT's view on variable B8/9 stars: spots versus pulsations: Evidence for differential rotation in HD 174648
• Triple system HD 201433 with a SPB star component seen by BRITE-Constellation: Pulsation, differential rotation, and angular momentum transfer
• Unexpected series of regular frequency spacing of delta Scuti stars in the non-asymptotic regime -- II. Sample -- echelle diagrams and rotation
• Gravity Modes Reveal the Internal Rotation of a Post-mass Transfer Gamma Doradus/Delta Scuti Hybrid Pulsator in Kepler Eclipsing Binary KIC 9592855
• The puzzling new class of variable stars in NGC 3766 : old friend pulsators?
• Gravito-inertial waves in a differentially rotating spherical shell
• Strong interactions between g- and p-modes in the hybrid gamma Doradus-delta Scuti CoRoT star ID105733033
• Unexpected series of regular frequency spacing of delta Scuti stars in the non-asymptotic regime -- I. The methodology
• Echelle diagrams and period spacings of g modes in gamma Doradus stars from four years of Kepler observations
• The CoRoT star ID100866999: a hybrid gamma Doradus - delta Scuti star in an eclipsing binary system
• Search for exoplanets around pulsating stars of A--F type in Kepler Short Cadence data and the case of KIC 8197761
• Chemical abundances of fast-rotating massive stars. II. Interpretation and comparison with evolutionary models
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• Testing a one-dimensional prescription of dynamical shear mixing with a two-dimensional hydrodynamic simulation
• Asymptotic theory of gravity modes in rotating stars II. Impact of general differential rotation
• Constraining the near-core rotation of the gamma Doradus star 43 Cygni using BRITE-Constellation data
• Dynamics of the envelope of a rapidly rotating star or giant planet in gravitational contraction
• Numerical Tests of Rotational Mixing in Massive Stars with the new Population Synthesis Code BONNFIRES

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