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View article: Asteroseismology of the young open cluster NGC 2516
Asteroseismology of the young open cluster NGC 2516 Open
Context. Although asteroseismology is regarded as the most powerful tool for probing stellar interiors, seismic modelling remains dependent on global stellar parameters such as temperature and luminosity. Stellar clusters offer direct meas…
View article: Asteroseismology of the young open cluster NGC 2516 II. Constraining cluster age using gravity-mode pulsators
Asteroseismology of the young open cluster NGC 2516 II. Constraining cluster age using gravity-mode pulsators Open
Although asteroseismology is regarded as the most powerful tool for probing stellar interiors, seismic modelling remains dependent on global stellar parameters. Stellar clusters offer direct measurements of these parameters by fitting a CM…
View article: Mixing due to internal gravity waves can explain the CNO surface abundances of B-type detached eclipsing binaries and single stars
Mixing due to internal gravity waves can explain the CNO surface abundances of B-type detached eclipsing binaries and single stars Open
Context. Observations of double-lined spectroscopic eclipsing binaries are ideal for studies of stellar evolution. Such stars have tight model-independent constraints on their masses and radii. When used in combination with spectroscopical…
View article: Learning novel representations of variable sources from multi-modal <i>Gaia</i> data via autoencoders
Learning novel representations of variable sources from multi-modal <i>Gaia</i> data via autoencoders Open
Context. Gaia Data Release 3 (DR3) has published for the first time epoch photometry, BP/RP (XP) low-resolution mean spectra, and supervised classification results for millions of variable sources. This extensive dataset offers a unique op…
View article: Interior rotation modelling of the <i>β</i> Cep pulsator HD 192575 including multiplet asymmetries
Interior rotation modelling of the <i>β</i> Cep pulsator HD 192575 including multiplet asymmetries Open
Context. Rotation plays an important role in stellar evolution. However, the mechanisms behind the transport of angular momentum in stars at various stages of their evolution are not well understood. To improve our understanding of these p…
View article: Sloan Digital Sky Survey-V: Pioneering Panoptic Spectroscopy
Sloan Digital Sky Survey-V: Pioneering Panoptic Spectroscopy Open
The Sloan Digital Sky Survey-V (SDSS-V) is pioneering panoptic spectroscopy: it is the first all-sky, multi-epoch, optical-to-infrared spectroscopic survey. SDSS-V is mapping the sky with multi-object spectroscopy (MOS) at telescopes in bo…
View article: Observational mapping of the mass discrepancy in eclipsing binaries. A new self-contained framework for concurrent analysis of photometric and spectroscopic time series
Observational mapping of the mass discrepancy in eclipsing binaries. A new self-contained framework for concurrent analysis of photometric and spectroscopic time series Open
The mass discrepancy problem, observed in high-mass stars within eclipsing binaries, highlights systematic differences between dynamical and evolutionary mass estimates, challenging the accuracy of stellar evolution models. We aim to deter…
View article: Evolution of the near-core rotation frequency of 2497 intermediate-mass stars from their dominant gravito-inertial mode <i>(Corrigendum)</i>
Evolution of the near-core rotation frequency of 2497 intermediate-mass stars from their dominant gravito-inertial mode <i>(Corrigendum)</i> Open
Contains fulltext : 320374.pdf (Publisher’s version ) (Open Access)
View article: Discerning internal conditions of pulsating hot subdwarf B-type stars
Discerning internal conditions of pulsating hot subdwarf B-type stars Open
Context. The frequencies of gravity-mode oscillations are determined by the chemical, thermal, and structural properties of stellar interiors, which facilitates the study of internal mixing mechanisms in stars. We investigated the impact o…
View article: Periodic Variability in Space Photometry of 181 New Supermassive Black Hole Binary Candidates
Periodic Variability in Space Photometry of 181 New Supermassive Black Hole Binary Candidates Open
Robust detections of supermassive black hole binaries (SMBHBs) are essential to unravel the role of galaxy mergers in galaxy evolution and for identifying potential sources of low-frequency gravitational waves. One of the most commonly use…
View article: Mode identification and ensemble asteroseismology of 119 <i>β</i> Cep stars detected by <i>Gaia</i> light curves and monitored by TESS
Mode identification and ensemble asteroseismology of 119 <i>β</i> Cep stars detected by <i>Gaia</i> light curves and monitored by TESS Open
Context. The Gaia mission detected many new candidate β Cephei ( β Cep) pulsators, whose variability classification has since been confirmed from Transiting Exoplanet Survey Satellite (TESS) space photometry of the nominal mission. Aims. W…
View article: Asteroseismic predictions for a massive main-sequence merger product
Asteroseismic predictions for a massive main-sequence merger product Open
The products of stellar mergers between two massive main-sequence stars appear as seemingly normal main-sequence stars after a phase of thermal relaxation, if not for certain peculiarities. These peculiarities, such as strong magnetic fiel…
View article: Asteroseismic predictions for a massive main-sequence merger product
Asteroseismic predictions for a massive main-sequence merger product Open
The products of stellar mergers between two massive main-sequence (MS) stars appear as seemingly normal MS stars after a phase of thermal relaxation, if not for certain peculiarities. Since these peculiarities are not limited to the merger…
View article: Appendix to "Mode identification and ensemble asteroseismology of 119 β Cep stars detected by Gaia light curves and monitored by TESS"
Appendix to "Mode identification and ensemble asteroseismology of 119 β Cep stars detected by Gaia light curves and monitored by TESS" Open
Appendix to "Mode identification and ensemble asteroseismology of 119 β Cep stars detected by Gaia light curves and monitored by TESS". Frequency spectra and light curves The figures allpgs_{i}.pdf contain light curves (left) and periodogr…
View article: Evolution of the near-core rotation frequency of 2497 intermediate-mass stars from their dominant gravito-inertial mode
Evolution of the near-core rotation frequency of 2497 intermediate-mass stars from their dominant gravito-inertial mode Open
Context. The sparsely sampled time-series photometry from Gaia Data Release 3 (DR3) led to the discovery of more than 100 000 main-sequence non-radial pulsators. The majority of these were further scrutinised by uninterrupted high-cadence …
View article: Evolution of the near-core rotation frequency of 2,497 intermediate-mass stars from their dominant gravito-inertial mode
Evolution of the near-core rotation frequency of 2,497 intermediate-mass stars from their dominant gravito-inertial mode Open
We combined Gaia DR3 and TESS photometric light curves to estimate the internal physical properties of 2,497 gravity-mode pulsators. We relied on asteroseismic properties of Kepler $γ\,$Dor and SPB stars to derive the near-core rotation fr…
View article: The PLATO field selection process
The PLATO field selection process Open
PLAnetary Transits and Oscillations of stars (PLATO) is an ESA M-class mission to be launched by the end of 2026 to discover and characterize transiting planets around bright and nearby stars, and in particular habitable rocky planets host…
View article: MOCKA – A PLATO mock asteroseismic catalogue: Simulations for gravity-mode oscillators
MOCKA – A PLATO mock asteroseismic catalogue: Simulations for gravity-mode oscillators Open
Context . With the PLAnetary Transits and Oscillation of stars (PLATO) space mission set for launch in December 2026 by the European Space Agency (ESA), a new photometric legacy and a future of new scientific discoveries await the communit…
View article: The PLATO field selection process. II. Characterization of LOPS2, the first long-pointing field
The PLATO field selection process. II. Characterization of LOPS2, the first long-pointing field Open
PLAnetary Transits and Oscillations of stars (PLATO) is an ESA M-class mission to be launched by the end of 2026 to discover and characterize transiting planets around bright and nearby stars, and in particular habitable rocky planets host…
View article: Variability in hot sub-luminous stars and binaries: Machine-learning analysis of Gaia DR3 multi-epoch photometry
Variability in hot sub-luminous stars and binaries: Machine-learning analysis of Gaia DR3 multi-epoch photometry Open
Hot sub-luminous stars represent a population of stripped and evolved red giants that is located on the extreme horizontal branch. Since they exhibit a wide range of variability due to pulsations or binary interactions, it is crucial to un…
View article: MOCKA -- A PLATO mock asteroseismic catalogue: Simulations for gravity-mode oscillators
MOCKA -- A PLATO mock asteroseismic catalogue: Simulations for gravity-mode oscillators Open
With ESA's PLATO space mission set for launch in December 2026, a new photometric legacy and a future of new scientific discoveries await. In this work we investigate PLATO's potential for observing pulsating stars across the Hertzsprung-R…
View article: KIC 4150611: A quadruply eclipsing heptuple star system with a <i>g</i>-mode period-spacing pattern
KIC 4150611: A quadruply eclipsing heptuple star system with a <i>g</i>-mode period-spacing pattern Open
Context. KIC 4150611 is a high-order (seventh-order) multiple composed of a triple system with: a F1V primary (Aa), which is eclipsed on a 94.2 d period by a tight binary composed of two K/M dwarfs (Ab1 and Ab2) that also eclipse each othe…
View article: Asteroseismic modelling of fast rotators and its opportunities for astrophysics
Asteroseismic modelling of fast rotators and its opportunities for astrophysics Open
Rotation matters for the life of a star. It causes a multitude of dynamical phenomena in the stellar interior during a star’s evolution, and its effects accumulate until the star dies. All stars rotate at some level, but most of those born…
View article: Variability in hot sub-luminous stars and binaries: Machine-learning analysis of Gaia DR3 multi-epoch photometry
Variability in hot sub-luminous stars and binaries: Machine-learning analysis of Gaia DR3 multi-epoch photometry Open
Hot sub-luminous stars represent a population of stripped and evolved red giants that is located on the extreme horizontal branch. Since they exhibit a wide range of variability due to pulsations or binary interactions, it is crucial to un…
View article: KIC 4150611: A quadruply eclipsing heptuple star system with a g-mode period-spacing pattern Asteroseismic modelling of the g-mode period-spacing pattern
KIC 4150611: A quadruply eclipsing heptuple star system with a g-mode period-spacing pattern Asteroseismic modelling of the g-mode period-spacing pattern Open
In this work, we aim to estimate the stellar parameters of the primary (Aa) by performing asteroseismic analysis on its period-spacing pattern. We use the C-3PO neural network to perform asteroseismic modelling of the g-mode period-spacing…
View article: Oscillation frequencies of moderately rotating delta scuti stars: asymmetric mode splittings due to non-spherical distortion
Oscillation frequencies of moderately rotating delta scuti stars: asymmetric mode splittings due to non-spherical distortion Open
We find that the observed pressure-mode rotational splittings of slowly/moderately rotating $\delta$ Scuti stars and $\beta$ Cephei stars mostly have a positive asymmetry. That is, the left frequency spacing is larger than the right spacin…
View article: The ESO UVES/FEROS Large Programs of TESS OB pulsators
The ESO UVES/FEROS Large Programs of TESS OB pulsators Open
Context. Spectral lines of hot massive stars are known to exhibit large excess broadening in addition to rotational broadening. This excess broadening is often attributed to macroturbulence, whose physical origin is a matter of active deba…
View article: The BlackGEM Telescope Array. I. Overview
The BlackGEM Telescope Array. I. Overview Open
The main science aim of the BlackGEM array is to detect optical counterparts to gravitational wave mergers. Additionally, the array will perform a set of synoptic surveys to detect Local Universe transients and short timescale variability …
View article: Asymmetric Rotational Splittings Due to Non-spherical Distortion In δ Scuti & β Cephei type P modes
Asymmetric Rotational Splittings Due to Non-spherical Distortion In δ Scuti & β Cephei type P modes Open
We find that the observed pressure-mode rotational splittings of slowly/moderately rotating Delta Scuti stars and Beta Cephei stars mostly have a positive asymmetry. That is, the left frequency spacing is larger than the right spacing in t…