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19922026
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astro-ph.SR2026

Extending asteroseismic magnetometry across the diverse landscape of magnetic structures

Nicholas Z. Rui, J. M. Joel Ong, Armand Leclerc +5

Magnetic fields have now been asteroseismically measured in the cores of many red giants. However, most interpretations of these measurements assume that the magnetic field is far…

astro-ph.SR2026

Virial-based extraction of structures in numerical simulations: The vibes tool

Simon Chevalier, Fabien Louvet, Yann Bernard +9

The processes that determine the stellar initial mass function (IMF) and its connection to the core mass function (CMF) are among the major open questions in star formation. The de…

astro-ph.SR2026

Euclid: The convective-transition gap of 47 Tuc

M. Libralato, M. Griggio, R. Gerasimov +140

We report the first detection of the `convective-transition gap' (also known as `M-dwarf gap') in the globular cluster 47 Tuc (NGC 104) thanks to Euclid data. This feature, linked…

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

Luminaries in the Sky: The TESS LEGACY sample of bright stars. II. In-depth seismic characterisation of 32 naked-eye stars in the PLATO LOP fields

E. Panetier, G. T. Hookway, E. Corsaro +13

The NASA TESS mission is conducting a nearly full-sky survey, enabling the photometric characterisation of millions of stars. The forthcoming ESA PLATO mission will provide long-du…

astro-ph.SR2026

Determining the incidence rate of magnetic Scuti candidates with CoRoT

Gautam Paul, Coralie Neiner, Claude Catala +1

Scuti stars are pulsating stars constituting the Scuti instability strip in the Hertzsprung-Russell (HR) diagram, which consists of A and F stars. They are in the transitio…

astro-ph.SR2026

Understanding hydrodynamical wave-driven shear mixing in stellar radiation zones. Looking in the mirror of the dyapicnal oceanic mixing

Stéphane Mathis

Stellar radiation zones play a key role in the long-term magneto-rotational and chemical evolution of stars. As parts of the oceans and of the atmosphere of the Earth, their dynami…

astro-ph.SR2026★ 2 cited

Asteroseismic modelling of main-sequence solar-like stars and Kepler exoplanet host stars with the FICO procedure I. Catalogue of fundamental stellar properties

Jérôme Bétrisey, Daniel R. Reese, Camilla Pezzotti +2

We present detailed asteroseismic modelling of 95 main-sequence solar-like stars and Kepler exoplanet host stars using the FICO procedure, a three-step method that combines forward…

astro-ph.SR2026

Rapidly oscillating Ap stars observed with TESS. The LAMOST Ap sample and 49 Cam

Inês Rolo, Daniel L. Holdsworth, Margarida S. Cunha +4

The rapidly oscillating chemically peculiar A-type (roAp) stars offer valuable insights into the internal physical processes of all stars, but their study is challenged by their ra…

astro-ph.SR2026

Non-LTE Analysis of Pre-eruptive Prominence Plasma Parameters Effects on the Lyman-beta and Lyman-gamma Lines with Solar Orbiter SPICE Observations

Yong Zhang, Nicolas Labrosse, Susanna Parenti +1

The first dedicated observation of an off-limb prominence by Solar Orbiter took place on April 15, 2023. Our aim is to determine the range of different physical parameters of this…

astro-ph.SR2026★ 1 cited

From core to envelope: revealing the deep dynamics of stars with two convective zones

Sylvain N. Breton, Allan Sacha Brun, Rafael A. García

On the Hertzsprung-Russell diagram, F-type solar pulsators connect the Sun to intermediate mass stars located on the instability strip. With respect to lower mass stars, they are s…

astro-ph.SR2026

Tearing Driven Reconnection: Energy Conversion Involving Firehose Kinetic Instabilities (2D Hybrid Möbius Simulations)

Etienne Berriot, Petr Hellinger, Olga Alexandrova +2

This study focuses on energy conversion related to tearing-driven magnetic reconnection in the context of weakly collisional astrophysical plasmas. We present results from a two-di…

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

Signatures of localised particle acceleration at a global coronal shock wave

C. Cuddy, D. M. Long, M. Nedal +2

Extreme ultraviolet (EUV) waves are global waves in the solar corona which can accelerate particles. The efficiency of the acceleration depends on local plasma characteristics e.g.…

astro-ph.SR2026★ 1 cited

Magnetic field measurements in a sample of Class I and flat-spectrum protostars observed with SPIRou

L. Drouglazet, E. Alecian, A. Sousa +27

Magnetic fields play a crucial role throughout stellar evolution, regulating angular momentum, channelling accretion, and launching jets and outflows. While the magnetic properties…

astro-ph.SR2026

IRAM 04191+1522: a compact proto-brown dwarf binary candidate

N. Huélamo, I. de Gregorio-Monsalvo, Aina Palau +12

Very low-luminosity objects in nearby star-forming regions have been identified as promising proto-brown dwarf candidates. The study of their multiplicity can shed light on the dom…

astro-ph.SR2026

Mining the Kepler Field: Atmospheric Parameters, Bolometric Corrections, and Luminosities

Diego Godoy-Rivera, Desmond H. Grossmann, Tyler Richey-Yowell +3

The ~ 200,000 stars observed by the Kepler mission have provided unprecedented constraints across astrophysics. With the advent of modern spectroscopic and photometric surveys, new…

astro-ph.SR2026

Anti-Solar Differential Rotation May Have Revived Magnetic Braking in the Subgiant 31 Aquilae

Travis S. Metcalfe, Jennifer L. van Saders, Thomas R. Ayres +16

Recent observations have shown that sufficiently slow rotation disrupts the organization of large-scale magnetic field in older main-sequence stars, leading to weakened magnetic br…

astro-ph.SR2026

Reconstruction of Cepheid Radial Velocity Curves from the shape of the V-band Light Curves

V. Hocdé, P. Moskalik, N. Nardetto +17

This paper aims to develop the first method to reconstruct the shape of the RV curves of short-period fundamental-mode Cepheids, based exclusively on their pulsation period and the…

astro-ph.SR2026★ 1 cited

Gaia DR3 high radial velocity stars: Genuine fast-moving objects or outliers?

D. Katz, A. Gómez, E. Caffau +39

The third Gaia data release includes 33.8 million radial velocity measurements, extending to a magnitude of G_RVS = 14. To reach this magnitude limit, spectra were processed down t…

astro-ph.SR2026★ 1 cited

Core-envelope coupling of gravito-inertial waves in pre-main-sequence solar-type stars

Sylvain N. Breton, Camilla Pezzotti, Stéphane Mathis +5

After the recent detection of solar equatorial Rossby waves, a renewed interest has been brought to the study of gravito-inertial waves propagating in the convective envelope of so…

astro-ph.SR2026★ 1 cited

Multiple shocks generated by the 2024 May 14 coronal mass ejection

Mohamed Nedal, Catherine Cuddy, David M. Long +3

This study characterises a series of type~II radio bursts associated with a CME that occurred on 14 May, focusing on the coronal conditions during the event and identifying the lik…

astro-ph.SR2026

Gaia FGK Benchmark Stars: Selecting Infrared Lines for Abundance Determination

Scarlet Elgueta, Paula Jofré, Claudia Aguilera-Gómez +7

The advent of new and more powerful infrared spectrographs has significantly motivated the advancement of the study of atomic and molecular line lists and stellar atmosphere models…

astro-ph.SR2026★ 2 cited

Surface brightness-colour relations of Milky Way and Magellanic Clouds classical Cepheids based on Gaia magnitudes

M. C. Bailleul, N. Nardetto, V. Hocdé +12

Aims: We derive SBCRs for classical Cepheids in the Milky Way and in the Magellanic Clouds using the photometric data available in the Gaia database, and we quantify the metallicit…