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astro-ph.SR2026

X-Shooter survey of disk accretion in Upper Scorpius II. A lack of correlation between accretion rates and disk properties

A. Empey, C. F. Manara, R. Garcia Lopez +19

The evolution of protoplanetary discs is intertwined with the process of planet formation, growth and migration. Studies of nearby star forming regions of different ages and proper…

astro-ph.SR2026

Stellar encounters in the solar neighbourhood and the special case of GJ~710

Eloi Fernandez-Puig, Juan Carlos Morales, Ignasi Ribas +2

We present a comprehensive characterisation of close stellar encounters in the solar vicinity, with a particular focus on placing the predicted fly-by of GJ~710 in context. This st…

astro-ph.SR2026

Observations of highly inclined disks with ALMA. Results from 12CO gas and continuum observations

Laurine Martinien, Gaspard Duchêne, Álvaro Ribas +4

[Abridged] We aim to study the radial and vertical extents of 12CO gas, millimeter dust thermal emission and optical/NIR scattered light by dust in disks. We analyze a sample of 14…

astro-ph.SR2026

A Quadruple Excess in Wide Binary Systems: Evidence for Correlated Binary Formation

Dolev Bashi, Cathie J. Clarke, Vasily Belokurov

Understanding the multiplicity of stellar systems and the correlations between their hierarchical components provides crucial insights into star formation processes. If binary comp…

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

Benchmarking pre-main sequence stellar evolutionary tracks using disk-based dynamical stellar masses

Luigi Zallio, Miguel Vioque, Sean M. Andrews +14

Stellar masses are a fundamental property to understand models of pre-main sequence evolution, but their values derived from Hertzsprung-Russell (HR) diagrams are strongly model de…

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

WEAVE imaging spectroscopy of NGC 6720: an iron bar in the Ring

R. Wesson, J. E. Drew, M. J. Barlow +23

We present spatially resolved spectroscopic observations of the planetary nebula NGC 6720, the Ring Nebula, taken during the science verification phase of WEAVE, a new instrument m…

astro-ph.SR2025★ 2 cited

The Binary Fraction of Stars in the Dwarf Galaxy Ursa Minor via Dark Energy Spectroscopic Instrument

Tian Qiu, Wenting Wang, Sergey Koposov +45

We utilize multi-epoch line-of-sight velocity measurements from the Milky Way Survey of the Dark Energy Spectroscopic Instrument to estimate the binary fraction for member stars in…

astro-ph.SR2025★ 2 cited

Disc breaking and parametric instability in warped accretion discs

Loren E Held, Gordon I. Ogilvie

We present the first local simulations of disc breaking/tearing in a warped accretion disc. Warps can arise due to a misalignment between the disc and the rotation axis of the cent…

astro-ph.SR2025★ 4 cited

The 12CO Gas Structures of Protoplanetary Disks in the Upper Scorpius Region

Luigi Zallio, Giovanni P. Rosotti, Miguel Vioque +13

We present measurements of key protoplanetary disk properties inferred from parametric models of ALMA 12CO spectral line visibilities. We derive gas-disk radii, integrated fluxes,…

astro-ph.SR2025★ 2 cited

Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): V721 CrA and BN CrA have wide and structured disks in polarised IR

Gabriele Columba, Elisabetta Rigliaco, Raffaele Gratton +8

We present near-infrared scattered-light observations of the disks around two stars of the Corona Australis star-forming region, V721 CrA, and BN CrA, obtained with VLT/SPHERE, in…

astro-ph.SR2025★ 3 cited

The R-Process Alliance: Exploring the cosmic scatter among ten r-process sites with stellar abundances

Mila Racca, Terese T. Hansen, Ian U. Roederer +11

The astrophysical origin of the rapid neutron-capture process (r-process), which produces about half of the elements heavier than iron, remains uncertain. The oldest, most metal-po…

astro-ph.SR2025★ 2 cited

Instability and vertical eccentricity variation in global hydrodynamic disk simulations

Janosz W. Dewberry, Henrik N. Latter, Gordon I. Ogilvie +1

Many dynamical interactions can induce eccentricities in astrophysical accretion disks. Disk eccentricities in turn seed a variety of instabilities, even in ideal hydrodynamics. We…

astro-ph.SR2025★ 12 cited

Molecular Mobility of Extraterrestrial Ices: Surface Diffusion in Astrochemistry and Planetary Science

N. F. W. Ligterink, C. Walsh, H. M. Cuppen +12

Molecules are ubiquitous in space. They are necessary component in the creation of habitable planetary systems and can provide the basic building blocks of life. Solid-state proces…

astro-ph.SR2025★ 22 cited

A high fraction of close massive binary stars at low metallicity

H. Sana, T. Shenar, J. Bodensteiner +74

At high metallicity, a majority of massive stars have at least one close stellar companion. The evolution of such binaries is subject to strong interaction processes, heavily impac…

astro-ph.SR2025★ 4 cited

Fewer Companions in the Crowd: The Low Close Binary Fraction in Globular Clusters from Gaia RVS

Dolev Bashi, Vasily Belokurov

In dense environments like globular clusters (GCs), dynamical interactions can disrupt or harden close binaries, nonetheless, detailed comparisons with field binary fractions remai…

astro-ph.SR2025★ 11 cited

Star formation and accretion rates within 500 pc as traced by Gaia DR3 XP spectra

L. Delfini, M. Vioque, Á. Ribas +1

Accretion rates from protoplanetary disks onto forming stars are a key ingredient in star formation and protoplanetary disk evolution. Extensive efforts surveying individual star f…

astro-ph.SR2025

Structure and Dynamics of the Sun's Interior Revealed by Helioseismic and Magnetic Imager

Alexander Kosovichev, Sarbani Basu, Yuto Bekki +43

High-resolution helioseismology observations with the Helioseismic and Magnetic Imager (HMI) onboard Solar Dynamics Observatory (SDO) provide a unique three-dimensional view of the…

astro-ph.SR2025★ 6 cited

Reduced atomic models for large-scale computations: Fe XIII near-infrared lines

Giulio Del Zanna, Supriya Hebbur Dayananda

Accurate atomic models for astrophysical plasma can be very complex, requiring thousands of states. However, for a variety of applications such as large-scale forward models of the…

astro-ph.SR2025

The highly magnetic Wolf-Rayet binary HD 45166 resolved with VLTI/GRAVITY

K. Deshmukh, T. Shenar, A. Mérand +9

HD 45166 was recently reported to be a long-period binary comprising a B7V star and a highly magnetic (kG) hot Wolf-Rayet-like component, dubbed a…

astro-ph.SR2025★ 14 cited

The landscape of binary core-collapse supernova progenitors and the late emergence of Wolf-Rayet winds

Avishai Gilkis, Eva Laplace, Iair Arcavi +2

The majority of core-collapse supernova (CCSN) progenitors are massive stars in multiple systems, and their evolution and final fate are affected by interactions with their compani…

astro-ph.SR2025★ 4 cited

Testing and Combining Transient Spectral Classification Tools on 4MOST-like Blended Spectra

Andrew Milligan, Isobel Hook, Christopher Frohmaier +15

With the 4-meter Multi-Object Spectroscopic Telescope (4MOST) expected to provide an influx of transient spectra when it begins observations in early 2026 we consider the potential…

astro-ph.SR2025★ 5 cited

GOTO065054+593624: a 8.5 mag amplitude dwarf nova identified in real time via Kilonova Seekers

T. L. Killestein, G. Ramsay, M. Kennedy +62

Dwarf novae are astrophysical laboratories for probing the nature of accretion, binary mass transfer, and binary evolution -- yet their diverse observational characteristics contin…