B. Mosser
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View article: Physical interpretation of the oscillation spectrum on the RGB and AGB
Physical interpretation of the oscillation spectrum on the RGB and AGB Open
The high-frequency resolution of the four-year $\textit{Kepler}$ time series allows detailed study of seismic modes in luminous giants. Seismic observables help infer interior structures via comparisons with stellar models. We aim to inves…
View article: Advancing the accuracy in age determinations of old-disk stars using an oscillating red giant in an eclipsing binary
Advancing the accuracy in age determinations of old-disk stars using an oscillating red giant in an eclipsing binary Open
Context. The study of resonant oscillation modes in low-mass red giant branch stars enables us to infer their ages with exceptional (∼10%) precision. This unlocks the possibility to reconstruct the temporal evolution of the Milky Way at ea…
View article: Red giant evolutionary status determination: The complete <i>Kepler</i> catalog
Red giant evolutionary status determination: The complete <i>Kepler</i> catalog Open
Context. Evolved cool stars have three distinct evolutionary status: shell-hydrogen burning (RGB), core-helium and shell-hydrogen burning (RC), and double-shell burning (AGB). Asteroseismology can distinguish between the RC and the other s…
View article: Pushing the boundaries of asteroseismic individual frequency modelling: Unveiling two evolved very low-metallicity red giants
Pushing the boundaries of asteroseismic individual frequency modelling: Unveiling two evolved very low-metallicity red giants Open
Context. Metal-poor stars play a crucial role in understanding the nature and evolution of the first stellar generation in the Galaxy. Previously, asteroseismic characterisation of red-giant stars has relied on constraints from the global …
View article: APOKASC-3: The Third Joint Spectroscopic and Asteroseismic Catalog for Evolved Stars in the Kepler Fields
APOKASC-3: The Third Joint Spectroscopic and Asteroseismic Catalog for Evolved Stars in the Kepler Fields Open
In the third APOKASC catalog, we present data for the complete sample of 15,808 evolved stars with APOGEE spectroscopic parameters and Kepler asteroseismology. We used 10 independent asteroseismic analysis techniques and anchor our system …
View article: Red giants evolutionary status determination: the complete Kepler catalog
Red giants evolutionary status determination: the complete Kepler catalog Open
Evolved cool stars have three distinct evolutionary status: shell Hydrogen-burning (RGB), core Helium and shell Hydrogen burning (RC), and double shell burning (AGB). Asteroseismology can distinguish between the RC and the other status, bu…
View article: APOKASC-3: The Third Joint Spectroscopic and Asteroseismic catalog for Evolved Stars in the Kepler Fields
APOKASC-3: The Third Joint Spectroscopic and Asteroseismic catalog for Evolved Stars in the Kepler Fields Open
In the third APOKASC catalog, we present data for the complete sample of 15,808 evolved stars with APOGEE spectroscopic parameters and Kepler asteroseismology. We used ten independent asteroseismic analysis techniques and anchor our system…
View article: The APO-K2 Catalog. II. Accurate Stellar Ages for Red Giant Branch Stars across the Milky Way
The APO-K2 Catalog. II. Accurate Stellar Ages for Red Giant Branch Stars across the Milky Way Open
We present stellar age determinations for 4661 red giant branch stars in the APO-K2 catalog, derived using mass estimates from K2 asteroseismology from the K2 Galactic Archaeology Program and elemental abundances from the Apache Point Gala…
View article: Nature versus nurture: distinguishing effects from stellar processing and chemical evolution on carbon and nitrogen in red giant stars
Nature versus nurture: distinguishing effects from stellar processing and chemical evolution on carbon and nitrogen in red giant stars Open
The surface [C/N] ratios of evolved giants are strongly affected by the first dredge-up (FDU) of nuclear-processed material from stellar cores. C and N also have distinct nucleosynthetic origins and serve as diagnostics of mixing and mass-…
View article: Nature vs. Nurture: Distinguishing Effects from Stellar Processing and Chemical Evolution on Carbon and Nitrogen in Red Giant Stars
Nature vs. Nurture: Distinguishing Effects from Stellar Processing and Chemical Evolution on Carbon and Nitrogen in Red Giant Stars Open
The surface [C/N] ratios of evolved giants are strongly affected by the first dredge-up (FDU) of nuclear-processed material from stellar cores. C and N also have distinct nucleosynthetic origins and serve as diagnostics of mixing and mass …
View article: Predicted asteroseismic detection yield for solar-like oscillating stars with PLATO
Predicted asteroseismic detection yield for solar-like oscillating stars with PLATO Open
We determine the expected yield of detections of solar-like oscillations for the PLATO ESA mission. We used a formulation from the literature to calculate the probability of detection and validated it with Kepler data. We then applied this…
View article: Locked differential rotation in core-helium burning red giants
Locked differential rotation in core-helium burning red giants Open
Oscillation modes of a mixed character are able to probe the inner region of evolved low-mass stars and offer access to a range of information, in particular, the mean core rotation. Ensemble asteroseismology observations are then able to …
View article: The APO-K2 Catalog. I. ∼7500 Red Giants with Fundamental Stellar Parameters from APOGEE DR17 Spectroscopy and K2-GAP Asteroseismology
The APO-K2 Catalog. I. ∼7500 Red Giants with Fundamental Stellar Parameters from APOGEE DR17 Spectroscopy and K2-GAP Asteroseismology Open
We present a catalog of fundamental stellar properties for ∼7500 evolved stars, including stellar radii and masses, determined from the combination of spectroscopic observations from the Apache Point Observatory Galactic Evolution Experime…
View article: Predicted asteroseismic detection yield for solar-like oscillating stars with PLATO
Predicted asteroseismic detection yield for solar-like oscillating stars with PLATO Open
Aims. In this work, we determine the expected yield of detections of solar-like oscillations for the targets of the foreseen PLATO ESA mission. Our estimates are based on a study of the detection probability, which takes into account the p…
View article: Locked differential rotation in core-helium burning red giants
Locked differential rotation in core-helium burning red giants Open
Context. Oscillation modes of a mixed character are able to probe the inner region of evolved low-mass stars and offer access to a range of information, in particular, the mean core rotation. Ensemble asteroseismology observations are then…
View article: K2 results for “young” <i>α</i>-rich stars in the Galaxy
K2 results for “young” <i>α</i>-rich stars in the Galaxy Open
Context. The origin of apparently young α -rich stars in the Galaxy is still a matter of debate in Galactic archaeology, whether they are genuinely young or might be products of binary evolution, and mergers or mass accretion. Aims. Our ai…
View article: K2 results for "young" $α$-rich stars in the Galaxy
K2 results for "young" $α$-rich stars in the Galaxy Open
The origin of apparently young $α$-rich stars in the Galaxy is still a matter of debate in Galactic archaeology, whether they are genuinely young or might be products of binary evolution and merger/mass accretion. We aim to shed light on t…
View article: Seismic and spectroscopic analysis of nine bright red giants observed by <i>Kepler</i>
Seismic and spectroscopic analysis of nine bright red giants observed by <i>Kepler</i> Open
Photometric time series gathered by space telescopes such as CoRoT and Kepler allow to detect solar-like oscillations in red giant stars and to measure their global seismic constraints, which can be used to infer global stellar properties …
View article: Investigating <i>Gaia</i> EDR3 parallax systematics using asteroseismology of cool giant stars observed by <i>Kepler</i>, K2, and TESS
Investigating <i>Gaia</i> EDR3 parallax systematics using asteroseismology of cool giant stars observed by <i>Kepler</i>, K2, and TESS Open
We analyse Gaia EDR3 parallax systematics as a function of magnitude and sky location using a recently published catalogue of 12 500 asteroseismic red-giant star distances. We selected ∼3500 red clump (RC) stars of similar chemical composi…
View article: 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
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 Open
We analyse Gaia EDR3 parallax systematics as a function of magnitude and sky location using a recently published catalogue of 12,500 asteroseismic red-giant star distances. We selected ~ 3500 red clump (RC) stars of similar chemical compos…
View article: The APO-K2 Catalog. I. ~7,500 Red Giants with Fundamental Stellar Parameters from APOGEE DR17 Spectroscopy and K2-GAP Asteroseismology
The APO-K2 Catalog. I. ~7,500 Red Giants with Fundamental Stellar Parameters from APOGEE DR17 Spectroscopy and K2-GAP Asteroseismology Open
Abstract: We present a catalog of fundamental stellar properties for ~7,500 evolved stars, including stellar radii and masses, determined from the combination of spectroscopic observations from the Apache Point Observatory Galactic Evoluti…
View article: The APO-K2 Catalog. I. ~7,500 Red Giants with Fundamental Stellar Parameters from APOGEE DR17 Spectroscopy and K2-GAP Asteroseismology
The APO-K2 Catalog. I. ~7,500 Red Giants with Fundamental Stellar Parameters from APOGEE DR17 Spectroscopy and K2-GAP Asteroseismology Open
Abstract: We present a catalog of fundamental stellar properties for ~7,500 evolved stars, including stellar radii and masses, determined from the combination of spectroscopic observations from the Apache Point Observatory Galactic Evoluti…
View article: The evolution of the Milky Way’s thin disc radial metallicity gradient with K2 asteroseismic ages
The evolution of the Milky Way’s thin disc radial metallicity gradient with K2 asteroseismic ages Open
The radial metallicity distribution of the Milky Way’s disc is an important observational constraint for models of the formation and evolution of our Galaxy. It informs our understanding of the chemical enrichment of the Galactic disc and …
View article: The evolution of the Milky Way's thin disc radial metallicity gradient with K2 asteroseismic ages
The evolution of the Milky Way's thin disc radial metallicity gradient with K2 asteroseismic ages Open
The radial metallicity distribution of the Milky Way's disc is an important observational constraint for models of the formation and evolution of our Galaxy. It informs our understanding of the chemical enrichment of the Galactic disc and …
View article: A Hot Saturn Orbiting an Oscillating Late Subgiant Discovered by TESS
A Hot Saturn Orbiting an Oscillating Late Subgiant Discovered by TESS Open
We present the discovery of HD 221416 b, the first transiting planet identified by the Transiting Exoplanet Survey Satellite (TESS) for which asteroseismology of the host star is possible. HD 221416 b (HIP 116158, TOI-197) is a bright (V =…
View article: Revised stellar properties of Kepler targets for the quarter 1-16 transit detection run
Revised stellar properties of Kepler targets for the quarter 1-16 transit detection run Open
We present revised properties for 196,468 stars observed by the NASA Kepler mission and used in the analysis of Quarter 1-16 (Q1-Q16) data to detect and characterize transiting planets. The catalog is based on a compilation of literature v…
View article: Asteroseismology with the Roman Galactic Bulge Time-Domain Survey
Asteroseismology with the Roman Galactic Bulge Time-Domain Survey Open
Asteroseismology has transformed stellar astrophysics. Red giant asteroseismology is a prime example, with oscillation periods and amplitudes that are readily detectable with time-domain space-based telescopes. These oscillations can be us…
View article: Investigating <i>Gaia</i> EDR3 parallax systematics using asteroseismology of Cool Giant Stars observed by <i>Kepler</i>, K2, and TESS
Investigating <i>Gaia</i> EDR3 parallax systematics using asteroseismology of Cool Giant Stars observed by <i>Kepler</i>, K2, and TESS Open
Gaia EDR3 has provided unprecedented data that has generated a great deal of interest in the astrophysical community, even though systematics affect the reported parallaxes at the level of ∼10 μas. Independent distance measurements are ava…
View article: Time evolution of Ce as traced by APOGEE using giant stars observed with the <i>Kepler</i>, TESS and K2 missions
Time evolution of Ce as traced by APOGEE using giant stars observed with the <i>Kepler</i>, TESS and K2 missions Open
Context. Abundances of slow neutron-capture process ( s -process) elements in stars with exquisite asteroseismic, spectroscopic, and astrometric constraints offer a novel opportunity to study stellar evolution, nucleosynthesis, and Galacti…
View article: Time evolution of Ce as traced by APOGEE using giant stars observed with the Kepler, TESS and K2 missions
Time evolution of Ce as traced by APOGEE using giant stars observed with the Kepler, TESS and K2 missions Open
Abundances of s-capture process elements in stars with exquisite asteroseismic, spectroscopic, and astrometric constraints offer a novel opportunity to study stellar evolution, nucleosynthesis, and Galactic chemical evolution. We aim to in…