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astro-ph.SR2026

ALMA's sharpest view of IRAS 08544-4431: Unveiling the dust distribution asymmetries in the circumbinary disk

Maksym Mohorian, Devika Kamath, Elizabeth Cappellazzo +10

The interactions between post-asymptotic giant branch (post-AGB) binaries and their circumbinary disks play a central role in shaping the evolution of these systems. Circumbinary d…

astro-ph.SR2026

Open Clusters as Laboratories for Cool Star Evolution: Highlights from the Cool Stars 23 Splinter Session

Deepak Chahal, Beatrice Caccherano, Edward Gillen +16

Open clusters remain among the most powerful laboratories for calibrating how fundamental stellar properties such as rotation, magnetic activity, surface chemistry, and internal st…

astro-ph.SR2026

Multiplicity of Cool Stars and their Evolution

Matthew I. Swayne, Leen Decin, Theo Khouri +12

Making up a sizeable portion of the galactic census, stellar multiples are experiencing a renaissance. Enabling the study of multiple strands of the study of cool stars, stellar mu…

astro-ph.SR2026

Exploring Late Stellar Evolution in the Era of Large Surveys: Machine Learning Prospects for Hot Subdwarfs and White Dwarfs

Princy Ranaivomanana, Murat Uzundag

The rapid growth of large-scale astronomical surveys and advances in data-driven analysis techniques have transformed the study of late-stage stellar evolution. Modern facilities a…

astro-ph.SR2026

The symphony of pulsations and binarity among massive stars using HERMES spectroscopy and TESS photometry

K. Thomson-Paressant, D. M. Bowman, F. Nardini +16

A wide range of variability mechanisms exist among intermediate mass and massive stars, which are not yet fully understood. Using complementary data sources for a large population…

astro-ph.SR2026

High-Frequency Magnetohydrodynamic Waves with Substantial Energy in the Solar Polar Corona

Yuhang Gao, Hui Tian, Richard Morton +5

The acceleration and heating of the fast solar wind remain long-standing challenges in space physics. One type of leading theoretical models requires high-frequency magnetohydrodyn…

astro-ph.SR2026

Binarity at LOw Metallicity (BLOeM): massive star variability revealed using a novel software tool for point-spread function fitting of TESS images

Pieterjan J. Van Daele, Dominic M. Bowman, Roey Ovadia +12

Massive stars, the progenitors of neutron stars and black holes, play a crucial role in shaping the chemical and radiative properties of entire galaxies through their winds and exp…

astro-ph.SR2026

MINDS survey of silicates in T Tauri disks: Correlation between dust and gas

J. Varga, Th. Henning, L. B. F. M. Waters +20

Context. Silicates are key constituents of planet-forming disks and major building blocks of rocky planets. Mid-infrared spectral features of micron-sized silicate grains trace gra…

astro-ph.SR2026

The effect of near-core mixing on rejuvenation and the asteroseismic properties of massive accretors

Jan Henneco, Dominic M. Bowman

The relatively recent revelation of the high occurrence rate of binary interactions, especially in intermediate- and high-mass systems, has prompted multiple investigations into th…

astro-ph.SR2026

High-precision K2/TESS Photometry and HERMES Spectroscopy of Four Bright Field Stars

Otto Trust, Santosh Joshi, Benard Nsamba +13

Space-based photometry from K2 and TESS, coupled with high-resolution spectroscopy, provides a unique opportunity to re-examine the variability and chemical nature of four bright s…

astro-ph.SR2026

Chromosphere of the quiet sun: II. Atmospheric response to small-scale magnetic flux emergence

Quentin Noraz, Mats Carlsson, Guillaume Aulanier

Coupling between the photosphere, chromosphere and corona in the quiet Sun (QS) is governed by a complex interplay between magnetic structuring, heating, mass loading, and radiativ…

astro-ph.SR2026

V446 Cephei: a Cep pulsator in a multiple system

A. Moharana, J. Southworth, K. Pavlovski +7

Cep stars in eclipsing binary (EB) systems give us an opportunity to put observational constraints on their structure and stellar parameters. We present a comprehensive analysi…

astro-ph.SR2026

Discovery of the first outbursting hot subdwarf binary: ZTF J0007+4804

E. Stringer, T. Kupfer, K. Deshmukh +10

Hot subdwarf binaries with white dwarf companions with orbital periods of less than two hours are progenitor candidates for massive single white dwarfs as well as a variety of ther…

astro-ph.SR2026★ 1 cited

X-Shooting ULLYSES: Massive stars at low metallicity XV. On the metallicity dependence of B-supergiant mass-loss rates

O. Verhamme, J. O. Sundqvist, A. de Koter +21

Context. For stellar evolution models we rely on mass-loss rate prescriptions that show features that lack empirical confirmation, such as the bi-stability jump. This jump is an in…

astro-ph.SR2026

Isochrone-cloud fitting and asteroseismology of the Kepler open cluster NGC6866

Haotian Wang, Gang Li, Dario J. Fritzewski +2

We investigate how isochrones computed with different input physics and initial conditions affect the age dating of the open cluster NGC 6866, and compare the results with asterose…

astro-ph.SR2026★ 1 cited

Competition between gravity waves excited by convection and tides in stars that host a companion

M. Esseldeurs, J. Ahuir, L. Amard +2

Asteroseismology has become a powerful tool in stellar astrophysics, offering unprecedented insights into the internal structures and dynamics of stars. It enables precise characte…

astro-ph.SR2026

Kinetic-based macro-modeling of the solar wind at large heliocentric distances: Kappa electrons at the exobase

Alexander Vinogradov, Marian Lazar, Ioannis Zouganelis +2

Recent evidence from Parker Solar Probe on the suprathermal electrons with Kappa-type velocity distributions in the outer corona has revived interest in the kinetic-based macro-mod…

astro-ph.SR2026

BlackGEM observations of compact pulsating stars: Mode identification for the DOV PG 1159-035 using multi-colour photometry

P. Ranaivomanana, C. Johnston, M. Uzundag +10

While space-based telescopes offer unparalleled precision for asteroseismology, ground-based observations remain crucial for identifying compact pulsator candidates and enabling th…

astro-ph.SR2026★ 1 cited

On the dynamics, thermodynamics and fine structure of virtual erupting filaments

Dion Donné, Yuhao Zhou, Hebe Cremades +1

It is not fully understood why some solar filaments erupt while others do not. Those that do typically undergo a slow rise followed by an acceleration phase, though this transition…

astro-ph.SR2026

A rotational line CO cooling rate prescription for AGB outflows

T. Ceulemans, F. De Ceuster, O. Vermeulen +1

Asymptotic Giant Branch (AGB) stars significantly contribute to the chemical composition of the universe. In their outflows, complex chemistry takes place, which critically depends…

astro-ph.SR2026

Signatures of Damping Nonlinear Oscillations by KHI-induced Turbulence in Synthetic Observations

Sihui Zhong, Andrew Hillier, Iñigo Arregui

Large-amplitude decaying kink oscillations of coronal loops are strongly influenced by nonlinear processes, such as Kelvin-Helmholtz instability (KHI) and turbulence, though compre…

astro-ph.SR2026

The Tarantula massive binary monitoring VII. The nature of the eccentric O+BH binary candidate VFTS 812

K. Deshmukh, H. Sana, O. Verhamme +9

Massive O-type stars () with an X-ray quiet black hole (BH) companion represent a crucial stage in massive binary evolution leading to binary BH mergers. The p…

astro-ph.SR2026

Filling The Pockets: The Spherical Nature of 3D Deflagration in Thermonuclear Supernovae

S. Shiber, P. Hoeflich, T. Mera +9

We investigate thermonuclear explosions within the delayed detonation framework. While spherical delayed detonation models generally reproduce key observational features, a fundame…

astro-ph.SR2026★ 5 cited

Binarity at LOw Metallicity (BLOeM): Projected rotational velocities

D. J. Lennon, S. R. Berlanas, A. Herrero +36

The Binarity at LOw Metallicity (BLOeM) survey is an ESO large programme designed to obtain multi-epoch spectroscopy for 929 massive stars in the Small Magellanic Cloud (SMC). It w…