Gravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars

Abstract

Red giants are evolved stars that have exhausted the supply of hydrogen in their cores and instead burn hydrogen in a surrounding shell. Once a red giant is sufficiently evolved, the helium in the core also undergoes fusion. Outstanding issues in our understanding of red giants include uncertainties in the amount of mass lost at the surface before helium ignition and the amount of internal mixing from rotation and other processes. Progress is hampered by our inability to distinguish between red giants burning helium in the core and those still only burning hydrogen in a shell. Asteroseismology offers a way forward, being a powerful tool for probing the internal structures of stars using their natural oscillation frequencies. Here we report observations of gravity-mode period spacings in red giants that permit a distinction between evolutionary stages to be made. We use high-precision photometry obtained with the Kepler spacecraft over more than a year to measure oscillations in several hundred red giants. We find many stars whose dipole modes show sequences with approximately regular period spacings. These stars fall into two clear groups, allowing us to distinguish unambiguously between hydrogen-shell-burning stars (period spacing mostly about 50 seconds) and those that are also burning helium (period spacing about 100 to 300 seconds).

to appear as a Letter to Nature

References in corpus (4)

• Correcting stellar oscillation frequencies for near-surface effects
• ASTEC -- the Aarhus STellar Evolution Code
• Solar-like oscillations from the depths of the red-giant star KIC 4351319 observed with Kepler
• Gravity modes and mixed modes as probes of stellar cores in main-sequence stars: from solar-like to beta Cep stars

Cited by in corpus (398)

• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• The PLATO 2.0 Mission
• Asteroseismology of Solar-Type and Red-Giant Stars
• GYRE: An open-source stellar oscillation code based on a new Magnus Multiple Shooting Scheme
• The Radial Velocity Experiment (RAVE): Fifth Data Release
• Fast core rotation in red-giant stars revealed by gravity-dominated mixed modes
• Revised Stellar Properties of Kepler Targets for the Quarter 1-16 Transit Detection Run
• Spin down of the core rotation in red giants
• Testing Scaling Relations for Solar-Like Oscillations from the Main Sequence to Red Giants using Kepler Data
• Target Selection for the Apache Point Observatory Galactic Evolution Experiment (APOGEE)
• The Updated BaSTI Stellar Evolution Models and Isochrones: I. Solar Scaled Calculations
• Seismic constraints on the radial dependence of the internal rotation profiles of six Kepler subgiants and young red giants
• Asteroseismology of old open clusters with Kepler: direct estimate of the integrated RGB mass loss in NGC6791 and NGC6819
• The APOKASC Catalog: An Asteroseismic and Spectroscopic Joint Survey of Targets in the Kepler Fields
• Probing the interior physics of stars through asteroseismology
• Stellar Spin-Orbit Misalignment in a Multiplanet System
• The Second APOKASC Catalog: The Empirical Approach
• Angular Momentum Transport in Stellar Interiors
• Calculating asteroseismic diagrams for solar-like oscillations
• The connection between stellar granulation and oscillation as seen by the Kepler mission
• Thermohaline instability and rotation-induced mixing. III - Grid of stellar models and asymptotic asteroseismic quantities from the pre-main sequence up to the AGB for low- and intermediate-mass stars at various metallicities
• Rotation and magnetism of Kepler pulsating solar-like stars. Towards asteroseismically calibrated age-rotation relations
• Planetary Candidates Observed by Kepler VI: Planet Sample from Q1-Q16 (47 Months)
• Fundamental Properties of Stars using Asteroseismology from Kepler & CoRoT and Interferometry from the CHARA Array
• Probing the core structure and evolution of red giants using gravity-dominated mixed modes observed with Kepler
• Asteroseismic classification of stellar populations among 13000 red giants observed by Kepler
• Kepler Mission Stellar and Instrument Noise Properties
• Asteroseismology of 16000 Kepler Red Giants: Global Oscillation Parameters, Masses, and Radii
• Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G=18.5
• Characterization of the power excess of solar-like oscillations in red giants with Kepler
• The APOGEE red-clump catalog: Precise distances, velocities, and high-resolution elemental abundances over a large area of the Milky Way's disk
• Mixed modes in red giants: a window on stellar evolution
• Galactic archaeology: mapping and dating stellar populations with asteroseismology of red-giant stars
• Stellar population synthesis based modelling of the Milky Way using asteroseismology of 13000 Kepler red giants
• A uniform asteroseismic analysis of 22 solar-type stars observed by Kepler
• Testing the asteroseismic scaling relations for Red Giants with Eclipsing Binaries Observed by Kepler
• Mixed modes in red-giant stars observed with CoRoT
• Granulation in Red Giants: observations by the Kepler mission and 3D convection simulations
• Age dissection of the Milky Way discs: red giants in the Kepler field
• Bayesian distances and extinctions for giants observed by Kepler and APOGEE
• Period spacings in red giants II. Automated measurement
• Asteroseismology Can Reveal Strong Internal Magnetic Fields in Red Giant Stars
• Giant star seismology
• Asteroseismology of solar-type stars
• Seismic evidence for a weak radial differential rotation in intermediate-mass core helium burning stars
• Core rotation braking on the red giant branch for various mass ranges
• Low-frequency gravity waves in blue supergiants revealed by high-precision space photometry
• Confirming chemical clocks: asteroseismic age dissection of the Milky Way disk(s)
• Asteroseismology of the open clusters NGC 6791, NGC 6811, and NGC 6819 from nineteen months of Kepler photometry
• A prevalence of dynamo-generated magnetic fields in the cores of intermediate-mass stars
• Measuring the vertical age structure of the Galactic disc using asteroseismology and SAGA
• Pulsating red giant stars in eccentric binary systems discovered from Kepler space-based photometry
• Gaia Data Release 2: Variable stars in the colour-absolute magnitude diagram
• Impact on asteroseismic analyses of regular gaps in Kepler data
• Seismic diagnostics for transport of angular momentum in stars 2. Interpreting observed rotational splittings of slowly-rotating red giant stars
• Chronologically dating the early assembly of the Milky Way
• Kepler-91b: a planet at the end of its life. Planet and giant host star properties via light-curve variations
• Evolutionary influences on the structure of red-giant acoustic oscillation spectra from 600d of Kepler observations
• Stroemgren survey for Asteroseismology and Galactic Archaeology: let the SAGA begin
• Period spacings in red giants I. Disentangling rotation and revealing core structure discontinuities
• Testing convective-core overshooting using period spacings of dipole modes in red giants
• Kepler-445, Kepler-446 and the Occurrence of Compact Multiples Orbiting Mid-M Dwarf Stars
• NGC 6819: testing the asteroseismic mass scale, mass loss, and evidence for products of non-standard evolution
• PLATO as it is: a legacy mission for Galactic archaeology
• Galactic Archaeology with asteroseismology and spectroscopy: Red giants observed by CoRoT and APOGEE
• Bayesian peak bagging analysis of 19 low-mass low-luminosity red giants observed with Kepler
• Demystifying Kepler Data: A Primer for Systematic Artifact Mitigation
• KIC 8410637: a 408-day period eclipsing binary containing a pulsating red giant
• Internal rotation of the red-giant star KIC 4448777 by means of asteroseismic inversion
• The role of turbulent pressure as a coherent pulsational driving mechanism: the case of the delta Scuti star HD 187547
• Kepler-432: a red giant interacting with one of its two long period giant planets
• Period-luminosity relations in evolved red giants explained by solar-like oscillations
• Detecting non-uniform period spacings in the Kepler photometry of gamma Doradus stars: methodology and case studies
• Spin alignment of stars in old open clusters
• Structural glitches near the cores of red giants revealed by oscillations in g-mode period spacings from stellar models
• Asteroseismic signatures of evolving internal stellar magnetic fields
• Atmospheric parameters of 82 red giants in the Kepler field
• Metal-Poor Lithium-Rich Giants in the Radial Velocity Experiment Survey
• Age dating of an early Milky Way merger via asteroseismology of the naked-eye star $\nu$ Indi
• Theoretical seismology in 3D : nonlinear simulations of internal gravity waves in solar-like stars
• Red Giants in Eclipsing Binary and Multiple-Star Systems: Modeling and Asteroseismic Analysis of 70 Candidates from Kepler Data
• Deep Learning Classification in Asteroseismology
• Angular momentum redistribution by mixed modes in evolved low-mass stars. II. Spin-down of the core of red giants induced by mixed modes
• Period spacings in red giants IV: Toward a complete description of the mixed-mode pattern
• Constraining Metallicity-dependent Mixing and Extra Mixing using [C/N] in Alpha-Rich Field Giants
• Dipole modes with depressed amplitudes in red giants are mixed modes
• The Observational Signatures of Convectively Excited Internal Gravity Modes in Main Sequence Stars
• Old puzzle, new insights: a lithium rich giant quietly burning helium in its core
• APOKASC-3: The Third Joint Spectroscopic and Asteroseismic catalog for Evolved Stars in the Kepler Fields
• Discovery of ubiquitous lithium production in low-mass stars
• Deep Learning Classification in Asteroseismology Using an Improved Neural Network: Results on 15000 Kepler Red Giants and Applications to K2 and TESS Data
• Modelling Kepler Red Giants in Eclipsing Binaries:Calibrating the Mixing Length Parameter with Asteroseismology
• A large and pristine sample of standard candles across the Milky Way: ~100,000 red clump stars with 3% contamination
• Kepler Mission Stellar and Instrument Noise Properties Revisited
• Oscillating red giants in eclipsing binary systems: empirical reference value for asteroseismic scaling relation
• A New Method for the Asteroseismic Determination of the Evolutionary State of Red-Giant Stars
• Echography of young stars reveals their evolution
• Amplitudes of solar-like oscillations: constraints from red giants in open clusters observed by Kepler
• Population synthesis to constrain Galactic and Stellar Physics- I- Determining age and mass of thin-disc red-giant stars
• Metallicity effect on stellar granulation detected from oscillating red giants in open clusters
• Study of KIC 8561221 observed by Kepler: an early red giant showing depressed dipolar modes
• Systematic search for stellar pulsators in the eclipsing binaries observed by Kepler
• The BAyesian STellar Algorithm (BASTA): a fitting tool for stellar studies, asteroseismology, exoplanets, and Galactic archaeology
• Fully compressible simulations of waves and core convection in main-sequence stars
• Acoustic Signatures of the Helium Core Flash
• Inferring mode inertias in evolved solar-like stars
• Asteroseismic surface gravity for evolved stars
• Most Lithium-rich Low-mass Evolved Stars Revealed as Red Clump stars by Asteroseismology and Spectroscopy
• Magnetic signatures on mixed-mode frequencies. I. An axisymmetric fossil field inside the core of red giants
• The treatment of mixing in core helium burning models -- II. Constraints from cluster star counts
• Angular momentum redistribution by mixed modes in evolved low-mass stars. I. Theoretical formalism
• Period spacings in red giants; III. Coupling factors of mixed modes
• The Aarhus Red Giants Challenge I: Stellar structures in the red giant branch phase
• Ages and Masses of 0.64 million Red Giant Branch stars from the LAMOST Galactic Spectroscopic Survey
• Oscillation mode linewidths and heights of 23 main-sequence stars observed by Kepler
• Properties of oscillation modes in subgiant stars observed by Kepler
• Testing asteroseismology with Gaia DR2: Hierarchical models of the Red Clump
• Solar-like oscillations in red giants observed with \textit{Kepler}: influence of increased timespan on global oscillation parameters
• An all-sky sample of intermediate- to high-mass OBA-type eclipsing binaries observed by TESS
• Impact of rotation on stochastic excitation of gravity and gravito-inertial waves in stars
• Detection and characterisation of oscillating red giants: first results from the TESS satellite
• Suppression of quadrupole and octupole modes in red giants observed by Kepler
• The Red-Giant Branch Bump Revisited: Constraints on Envelope Overshooting in a Wide Range of Masses and Metallicities
• KIC 8462852 Faded Throughout the Kepler Mission
• K2 photometry and HERMES spectroscopy of the blue supergiant rho Leo: rotational wind modulation and low-frequency waves
• Probing the deep end of the Milky Way with \emph{Kepler}: Asteroseismic analysis of 854 faint Red Giants misclassified as Cool Dwarfs
• Survey of Li-rich giants among Kepler and LAMOST fields: Determination of Li-rich giants Evolutionary Phase
• Mass and Age of Red Giant Branch Stars Observed with LAMOST and \emph{Kepler}
• Constructing a one-solar-mass evolutionary sequence using asteroseismic data from \textit{Kepler}
• Implications of Rapid Core Rotation in Red Giants for Internal Angular Momentum Transport in Stars
• Horizons: Nuclear Astrophysics in the 2020s and Beyond
• A helium-flash-induced mixing event can explain the lithium abundances of red clump stars
• Discovery of post-mass-transfer helium-burning red giants using asteroseismology
• Active red giants: close binaries versus single rapid rotators
• Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the $TESS$ Continuous Viewing Zones and beyond
• The GALAH survey: A census of lithium-rich giant stars
• Study of Lithium Rich Giants with the GALAH Spectroscopic Survey
• Population synthesis of helium white dwarf--red giant star mergers and the formation of lithium-rich giants and carbon stars
• KIC 9246715: The Double Red Giant Eclipsing Binary With Odd Oscillations
• Testing Asteroseismic Scaling Relations using Eclipsing Binaries in Star Clusters and the Field
• The K2 Galactic Archaeology Program Data Release 3: Age-abundance patterns in C1-C8 and C10-C18
• Helium signature in red giant oscillation patterns observed by Kepler
• The Age and Interior Rotation of Stars from Asteroseismology
• The Physical Parameters of the Retired A Star HD185351
• Near-degeneracy effects on the frequencies of rotationally-split mixed modes in red giants
• Kepler's first view of O-star variability: K2 data of five O stars in Campaign 0 as a proof-of-concept for O-star asteroseismology
• Kepler sheds new and unprecedented light on the variability of a blue supergiant: gravity waves in the O9.5Iab star HD 188209
• Kepler Eclipsing Binaries with $\delta$ Scuti/$\gamma$ Doradus Pulsating Components 1: KIC 9851944
• Atmospheric parameters and chemical properties of red giants in the CoRoT asteroseismology fields
• Asteroseismology of 36 \emph{Kepler} subgiants -- I. Oscillation frequencies, linewidths and amplitudes
• Asteroseismology of 36 Kepler subgiants -- II: Determining ages from detailed modelling
• Solar-like oscillations from the depths of the red-giant star KIC 4351319 observed with Kepler
• Amplitude and lifetime of radial modes in red giant star spectra observed by Kepler
• Asteroseismology of red giants: from analysing light curves to estimating ages
• Asteroseismology of 3,642 Kepler Red Giants: Correcting the Scaling Relations based on Detailed Modeling
• Semi-analytic Expressions for the Isolation and Coupling of Mixed Modes
• The Gaia-ESO Survey: properties of newly discovered Li-rich giants
• Nonlinear seismic scaling relations
• Spectroscopic and seismic analysis of red giants in eclipsing binaries discovered by Kepler
• RATS-Kepler -- a deep high cadence survey of the Kepler field
• Tidally Induced Oscillations and Orbital Decay in Compact Triple-Star Systems
• On the asymptotic acoustic-mode phase in red-giant stars and its dependence on evolutionary state
• A prescription for the asteroseismic surface correction
• TESS first look at evolved compact pulsators : Discovery and asteroseismic probing of the g-mode hot B subdwarf pulsator EC 21494-7018
• Seismic signature of electron degeneracy in the core of red giants: hints for mass transfer between close red-giant companions
• Seismic probing of the first dredge-up event through the eccentric red-giant & red-giant spectroscopic binary KIC9163796
• Insights from the APOKASC Determination of the Evolutionary State of Red-Giant Stars by consolidation of different methods
• Asteroseismology of 1523 misclassified red giants using $\text{Kepler}$ data
• A variational encoder-decoder approach to precise spectroscopic age estimation for large Galactic surveys
• Detecting axisymmetric magnetic fields using gravity modes in intermediate-mass stars
• The masses of retired A stars with asteroseismology: Kepler and K2 observations of exoplanet hosts
• Testing the asymptotic relation for period spacings from mixed modes of red giants observed with the Kepler mission
• Asteroseismic versus Gaia distances: a first comparison
• The K2 M67 Study: An Evolved Blue Straggler in M67 from K2 Mission Asteroseismology
• Surface effects on the red giant branch
• The Aarhus red giants challenge II. Stellar oscillations in the red giant branch phase
• Using red clump stars to correct the Gaia DR1 parallaxes
• Modelling a high-mass red giant observed by CoRoT
• Asteroseismology of red giants as a tool for studying stellar populations: first steps
• Seismic modelling of the $\beta$Cep star HD\,180642 (V1449\,Aql)
• Asteroseismic masses of retired planet-hosting A-stars using SONG
• Asteroseismic Fingerprints of Stellar Mergers
• Photospheric diagnostics of core helium burning in giant stars
• How accurate are stellar ages based on stellar models? II. The impact of asteroseismology
• Enhancement of Lithium in Red Clump Stars by the Additional Energy Loss Induced by New Physics
• Age-Dating Red Giant Stars Associated with Galactic Disk and Halo Substructures
• Asteroseismic measurement of core and envelope rotation rates for 2006 red giant branch stars
• Deciphering the evolution of the Milky Way discs: Gaia APOGEE Kepler giant stars and the Besançon Galaxy Model
• Prospects for detecting asteroseismic binaries in Kepler data
• Stellar model fits and inversions
• KIC 9821622: An interesting lithium-rich giant in the Kepler field
• Modeling Kepler Observations of Solar-like Oscillations in the Red-giant Star HD 186355
• Echelle diagrams and period spacings of g modes in gamma Doradus stars from four years of Kepler observations
• The K2 Galactic Archaeology Program Data Release 2: Asteroseismic results from campaigns 4, 6, & 7
• Precise radial velocities of giant stars VI. A possible 2:1 resonant planet pair around the K giant star $\eta$ Cet
• Red clump stars of the Milky Way - laboratories of extra-mixing
• Verification of Asymptotic Relation for Mixed Modes in Red Giant Stars
• Seismic performance
• Probing the mid-layer structure of red giants I. Mixed-mode coupling factor as a seismic diagnosis
• Coefficients of variation for detecting solar-like oscillations
• Absolute Magnitudes of Seismic Red Clumps in the Kepler Field and SAGA: the age dependency of the distance scale
• Detection of solar-like oscillations in the bright red giant stars $\gamma$ Psc and ${\theta }^1$ Tau from a 190-day high-precision spectroscopic multisite campaign
• Asymmetries of frequency splittings of dipolar mixed modes: a window on the topology of deep magnetic fields
• Topology and obliquity of core magnetic fields in shaping seismic properties of slowly rotating evolved stars
• Evidence for compact binary systems around Kepler red giants
• Core-Envelope Coupling in Intermediate-Mass Core-Helium Burning Stars
• Asteroseismology of the Hyades red giant and planet host epsilon Tauri
• Convective-core overshoot and suppression of oscillations: Constraints from red giants in NGC6811
• Overshooting calibration and age determination from evolved binary system
• Testing the cores of first ascent red-giant stars using the period spacing of g modes
• Fast and Automated Peak Bagging with DIAMONDS (FAMED)
• The stellar kinematics in the solar neighborhood from LAMOST data
• The peculiar velocities in the Galactic outer disk--hints of the elliptical disk and the perturbation of the spiral structures
• LAMOST DR1: Stellar parameters and chemical abundances with SP_Ace
• The peculiar in-plane velocities in the outer disc of the Milky Way
• Gravity mode offset and properties of the evanescent zone in red-giant stars
• Magnetic signatures on mixed-mode frequencies. II. Period spacings as a probe of the internal magnetism of red giants
• Attempts to reproduce the rotation profile of the red giant KIC 7341231 observed by Kepler
• Nature vs. Nurture: Distinguishing Effects from Stellar Processing and Chemical Evolution on Carbon and Nitrogen in Red Giant Stars
• Testing tidal theory for evolved stars by using red-giant binaries observed by Kepler
• A close-in giant planet escapes engulfment by its star
• Variations of the mixing character of dipolar mixed modes in red giant stars
• Low-amplitude rotational modulation rather than pulsations in the CoRoT B-type supergiant HD 46769
• Asteroseismology of overmassive, undermassive, and potential past members of the open cluster NGC6791
• Spectroscopic study of two new super Li rich red clump K giants
• HD-TESS: An Asteroseismic Catalog of Bright Red Giants within TESS Continuous Viewing Zones
• HD 41641: A classical $\delta$ Sct-type pulsator with chemical signatures of an Ap star
• Deciphering stellar chorus: apollinaire, a Python 3 module for Bayesian peakbagging in helio- and asteroseismology
• The K2 Bright Star Survey I: Methodology and Data Release
• Core magnetic field imprint in the non-radial oscillations of red giant stars
• The APO-K2 Catalog. II. Accurate Stellar Ages for Red Giant Branch Stars across the Milky Way
• Shell helium-burning hot subdwarf B stars as candidates for blue large-amplitude pulsators
• TESS Asteroseismic Analysis of the Known Exoplanet Host Star HD 222076
• An Intermediate-age Alpha-rich Galactic Population in K2
• High-resolution spectroscopic analysis of a large sample of Li-rich giants found by LAMOST
• Evidence of structural discontinuities in the inner core of red-giant stars
• Comprehensive stellar seismic analysis : New method exploiting the glitches information in solar-like pulsators
• Universal properties of the high- and low-α disk: small intrinsic abundance scatter and migrating stars
• Abundance analyses of Li-enriched and normal giants in the GALAH survey
• Metallicity dependence of turbulent pressure and macroturbulence in stellar envelopes
• The PLATO Simulator: modelling of high-precision high-cadence space-based imaging
• Mixed Mode Asteroseismology of Red Giant Stars Through the Luminosity Bump
• Asteroseismology of binary stars and a compilation of core overshoot and rotational frequency values of OB stars
• Automated determination of g-mode period spacing of red-giant stars
• Evolution of the gravity offset of mixed modes in RGB stars
• Lithium abundances in giants as a function of stellar mass: An evidence for He-flash as the source of Li enhancement in low mass giants
• Precise Masses, Ages of ~1.0 million RGB and RC stars observed by the LAMOST
• Fundamental stellar parameters and age-metallicity relation of Kepler red giants in comparison with theoretical evolutionary tracks
• Dipolar modes in luminous red giants
• Low-frequency variations of unknown origin in the Kepler Delta Scuti star KIC 5988140 = HD 188774
• Seismology of Giant Planets
• Asteroseismology of Eclipsing Binary Stars in the Kepler Era
• CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars
• A high-precision abundance analysis of the nuclear benchmark star HD 20
• CoRoT and Kepler results: Solar-like oscillators
• Identification, mass and age of primary red clump stars from spectral features derived with the LAMOST DR7
• Establishing the accuracy of asteroseismic mass and radius estimates of giant stars III. KIC4054905, an eclipsing binary with two 10 Gyr thick disk RGB stars
• Astroconformer: The Prospects of Analyzing Stellar Light Curves with Transformer-Based Deep Learning Models
• Beyond Gaia: Asteroseismic Distances of M giants using Ground-Based Transient Surveys
• Kepler meets Gaia DR3: homogeneous extinction-corrected color-magnitude diagram and binary classification
• Bayesian hierarchical inference of asteroseismic inclination angles
• Grid-based seismic modelling at high and low signal-to-noise ratios HD 181420 and HD 175272
• Investigating Gaia EDR3 parallax systematics using asteroseismology of Cool Giant Stars observed by Kepler, K2, and TESS II. Deciphering Gaia parallax systematics using red clump stars
• The vertical force in the Solar Neighbourhood using red clump stars in TGASxRAVE - Constraints on the local dark matter density
• Global Analysis of KOI-977: Spectroscopy, Asteroseismology, and Phase-curve Analysis
• Asteroseismic analysis of solar-mass subgiants KIC 6442183 and KIC 11137075 observed by Kepler
• From the Inner to Outer Milky Way: A Photometric Sample of 2.6 Million Red Clump Stars
• Clumpiness: Time-domain classification of red-giant evolutionary states
• Li-rich Giants in LAMOST Survey. III. The statistical analysis of Li-rich giants
• New determination of abundances and stellar parameters for a set of weak G-band stars
• A double-modulation effect detected in a double-mode high-amplitude $\delta$ Scuti star: KIC 10284901
• A Unified Exploration of the Chronology of the Galaxy
• On Granulation and Irregular Variation of Red Supergiants
• Unveiling the Structure and Dynamics of Red Giants with Asteroseismology
• Seismic constraints on the internal structure of evolved stars: From high-luminosity RGB to AGB stars
• On attempting to automate the identification of mixed dipole modes for subgiant stars
• Lithium abundances and asteroseismology of red giants: understanding the evolution of lithium in giants based on asteroseismic parameters
• Measuring frequency and period separations in red-giant stars using machine learning
• Time-Series Analysis of Broadband Photometry of Neptune from K2
• Multi-campaign Asteroseismic Analysis of eight Solar-like pulsating stars observed by the K2 mission
• Connecting integrated RGB mass loss from asteroseismology and globular clusters
• Properties of the Hyades, the eclipsing binary HD27130, and the oscillating red giant $\epsilon$ Tau
• Asteroseismic sensitivity to internal rotation along the red-giant branch
• Constraining the core-rotation rate in red-giant stars from Kepler space photometry
• Asteroseismology of red giant stars: the potential of dipole modes
• Frequency analysis of KIC 1573174 : shedding light on the nature of HADS stars
• Kepler and the Long Period Variables
• Massive Star Asteroseismology in Action
• Asteroseismic age determination for dwarfs and giants
• On the characterization of GJ 504: a magnetically active planet-host star observed by the Transiting Exoplanet Survey Satellite (TESS)
• Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE - Constellation
• MAIA, a three-channel imager for asteroseismology: instrument design
• The YNEV stellar evolution and oscillation code
• Disentangling the origin of chemical differences using GHOST
• Nonlinear Mixed Modes in Red Giants
• A simple method to measure numax for asteroseismology: application to 16,000 oscillating Kepler red giants
• Probing infrared excess connection with Li enhancement among red clump giants
• Adiabatic solar-like oscillations in red giant stars
• Stellar convective cores as dark matter probes
• The discovery of a planetary candidate around the evolved low-mass Kepler giant star HD 175370
• Revisiting the Red-giant Branch Hosts KOI-3886 and $\iota$ Draconis. Detailed Asteroseismic Modeling and Consolidated Stellar Parameters
• The Kepler Smear Campaign: Light curves for 102 Very Bright Stars
• Lithium in Kepler Red Giants: Defining Normal and Anomalous
• Frequency identification and asteroseismic analysis of the red giant KIC 9145955: fundamental parameters and helium core size
• Red giants evolutionary status determination: the complete Kepler catalog
• Asteroseismology of red giant stars
• KIC 12602250: A low-amplitude Double-mode $\delta$ Scuti star with Amplitude Modulation
• A binary with a $\delta$~Scuti star and an oscillating red giant: orbit and asteroseismology of KIC9773821
• Asteroseismology of evolved stars with EGGMiMoSA I. Theoretical mixed-mode patterns from the subgiant to the RGB phase
• Asteroseismic effects in close binary stars
• No swan song for Sun-as-a-star helioseismology: performances of the Solar-SONG prototype for individual mode characterisation
• The mass and age of the first SONG target: the red giant 46 LMi
• KIC 10975348: A double-mode or triple-mode high-amplitude $\delta$ Scuti star?
• Improved asteroseismic inversions for red-giant surface rotation rates
• Evolution of Dipolar Mixed-mode Coupling Factor in Red Giant Stars: Impact of Buoyancy Spike
• Seismic characterization of red giants going through the Helium-core flash
• Robo-AO Kepler Asteroseismic Survey. I. Adaptive optics imaging of 99 asteroseismic Kepler dwarfs and subgiants
• An observational testbed for cosmological zoom-in simulations: constraining stellar migration in the solar cylinder using asteroseismology
• Semi-Analytical Expression of G-Mode Period Spacing: The Case of Brunt-Väisälä Frequency with Not a Jump But a Ramp
• A Homogeneous Catalog of Oscillating Solar-Type Stars Observed by the Kepler Mission and a New Amplitude Scaling Relation Including Chromospheric Activity
• Distribution and evolution of Li abundance in red clump stars can be explained by the internal gravity waves
• Towards 21st Century Stellar Models: Star Clusters, Supercomputing, and Asteroseismology
• Multi-Wavelength Photometry Derived from Monochromatic Kepler Data
• Solar-like oscillating stars as standard clocks and rulers for Galactic studies
• Advancing accuracy in age determinations of old-disk stars using an oscillating red giant in an eclipsing binary
• Red-Giant Branch Stellar Cores as Macroscopic Dark Matter Detectors
• Non-standard modeling of a possible blue straggler star, KIC 11145123
• Observational techniques to measure solar and stellar oscillations
• Oscillations of red giant stars with magnetic damping in the core. I. Dissipation of mode energy in dipole-like magnetic fields
• TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting An Extremely Eccentric Exoplanet
• GaiaUnlimited: The old stellar disc of the Milky Way as traced by the Red Clump
• Solar-like oscillations in subgiant and red-giant stars: mixed modes
• Sounding stellar cores with mixed modes
• Evolutionary states of red-giant stars from grid-based modelling
• Revealing the Fate of Exoplanet Systems: Asteroseismic Identification of Host Star in the Red Clump or Red Giant Branch
• Asteroseismology of the heartbeat star KIC 5006817
• Asteroseismic analysis of eight solar-like oscillating evolved stars in the open cluster NGC 6811
• Solar-like oscillations in $\gamma$ Cephei A as seen through SONG and TESS
• Pushing the boundaries of asteroseismic individual frequency modelling: unveiling two evolved very-low metallicity red giants
• Detection of Gravity Modes in RR Lyrae Stars
• Mixed-mode coupling in the Red Clump I. Standard single star models
• In search of gravity mode signatures in main sequence solar-type stars observed by Kepler
• Dynamos and Differential Rotation: Advances at the Crossroads of Analytics, Numerics, and Observations
• Power density spectra morphologies of seismically unresolved red-giant asteroseismic binaries
• The efficiency of mixed modes for angular momentum transport
• Parametric models of core-helium-burning stars: structural glitches near the core
• Stellar hydrodynamics caught in the act: Asteroseismology with CoRoT and Kepler
• The robustness of inferred envelope and core rotation rates of red-giant stars from asteroseismology
• CN and CO Features: Key Indicators of Red Giant Evolutionary Phase in Moderate-Resolution X-Shooter Spectra
• Asteroseismology of KIC 8263801:Is it a member of NGC 6866 and a red clump star?
• Constraining dark photon properties with Asteroseismology
• Volume-limited sample of low-mass red giant stars, the progenitors of hot subdwarf stars I. Sample selection and binary classification method
• Red giant seismology: observations
• Using the phase shift to asymptotically characterize the dipolar mixed modes in post-main-sequence stars
• Distinguishing super-Nyquist frequencies via their temporal variation in $\gamma$ Doradus stars from continuous photometry
• Red Giant Oscillations: Stellar Models and Mode Frequency Calculations
• Asteroseismically Inferred Ages of 132,000 Red Giants with TESS
• The sensitivity and behaviour of the curvature in the échelle diagram of red-giant stars
• Solar-like stars observed by Kepler: an incredible adventure
• Realising efficient computation of individual frequencies for red-giant models
• A simple model to describe intrinsic stellar noise for exoplanet detection around red giants
• Internal rotation of red giants by asteroseismology
• FRA -- A new Fast, Robust and Automated pipeline for the detection and measurement of solar-like oscillations in time-series photometry of red-giant stars
• Is there a unique asteroseismic interior model for the solar-like oscillating KIC 7747078?
• Stellar oscillations - the adiabatic case
• Chronos --- Taking the pulse of our Galactic neighbourhood (ESA Voyage 2050 White Paper)
• Concerning Li-rich status of KIC~9821622: A Kepler field RGB star reported as Li-rich Giant
• Constraining stellar physics from red-giant stars in binaries - stellar rotation, mixing processes and stellar activity
• Fundamental stellar properties from asteroseismology
• Seismic and spectroscopic analysis of 9 bright red giants observed by Kepler
• Red giant asteroseismic binaries in the Kepler field
• The AGB bump: a calibrator for the core mixing
• Contributions of structural variations to the asymptotic mixed-mode coupling Factor in red giant stars
• Seismic indices -- a deep look inside evolved stars
• Asteroseismology
• The γ Dor stars as revealed by Kepler : A key to reveal deep-layer rotation in A and F stars
• Asteroseismology of red giants & galactic archaeology
• The Tale of a Hungry Subgiant and Its Brown Dwarf: Interior Radiative Damping Dominates the Tidal Evolution of TOI-5882
• Early Results from APOKASC
• Calibration of the [C/N] and [Y/Mg] chemical clocks with asteroseismic ages from the TESS space mission
• Asymptotic power spectra and visibilities of damped mixed modes
• Spectroscopic and asteroseismic analysis of the secondary clump red giant HD 226808
• The noise wars in helio- and asteroseismology
• Detailed theoretical analysis of core Helium-burning stars: Mixed mode patterns I. Impact of the He-flash discontinuity and of induced semi-convection
• HAYDN -- High-precision AsteroseismologY of DeNse stellar fields (ESA Voyage 2050 White Paper)
• Asteroseismic Analysis of a Red Giant KIC 9145955 by Including the Small-scale Magnetic Fields in the Atmosphere
• Physical interpretation of the oscillation spectrum on the RGB and AGB
• Kepler Pixel Project -- background RR Lyrae stars in the primary Kepler mission field of view
• Probing the Deep End of the Milky Way with New Oscillating Kepler Giants
• Asteroseismology of iota Draconis and Discovery of an Additional Long-Period Companion
• Hidden oscillations in plain sight: identification of seismically unresolved red-giant asteroseismic binary candidates
• New population synthesis approach:The golden path to constrain stellar andgalactic physics
• Isochrone-cloud fitting and asteroseismology of the Kepler open cluster NGC6866
• Peak Bagging of red giant stars observed by Kepler: first results with a new method based on Bayesian nested sampling
• A Near-Infrared and Optical Study of NGC 5822: An Open Cluster Hosting Barium-stars and Lithium-Enriched Giant Stars
• Perspectives on the Physics of Late-Type Stars from Beyond Low Earth Orbit, the Moon and Mars
• Precision Analysis of Evolved Stars
• Stellar activity cycles and contribution of the deep layers knowledge