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19922026
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astro-ph.SR2026

Deep MUSE observations of SNR 0509-67.5 reveal a double degenerate merger progenitor

Priyam Das, Ivo R. Seitenzahl, Gilles Ferrand +5

Deep MUSE observations of SNR 0509-67.5 reveal that the coronal [Fe\,\textsc{xiv}] 5303 emission line appears with either one or two velocity components across the entire…

astro-ph.SR2026★ 2 cited

Helium emission from Balmer-dominated shocks in Type Ia supernova remnants provides constraints to their progenitor systems

Priyam Das, Ivo Rolf Seitenzahl, Parviz Ghavamian +4

Balmer-dominated shocks in Type Ia supernova remnants offer powerful probes into collisionless shock physics and hints towards supernova progenitor environments. Prior studies focu…

astro-ph.SR2026

Global asteroseismology of 19,000 red giants in the TESS Continuous Viewing Zones

K. R. Sreenivas, Timothy R. Bedding, Daniel Huber +5

TESS (Transiting Exoplanet Survey Satellite) has produced long-term photometry for millions of stars across the sky. In this work, we present an asteroseismic catalogue of 19,151 r…

astro-ph.SR2026

Harmonic phase diagnostics of long secondary periods. Testing predictions of oscillatory convective dipole modes in the OGLE sample

Benjamin Courtney-Barrer, Xavier Haubois, Michael Ireland +1

Long secondary periods (LSPs) in luminous red giants remain the only major class of long-period stellar variability without a secure physical origin. Competing hypotheses include b…

astro-ph.SR2026★ 3 cited

A deep HST view of the open cluster NGC2158: binaries, mass functions, and M-dwarf discontinuity

A. V. Marchuk, F. Muratore, A. P. Milone +13

A significant fraction of stars in both the Galactic field and stellar clusters are members of binary systems. Understanding their properties is therefore essential for a comprehen…

astro-ph.SR2025★ 2 cited

Interferometric view into RT Pav's long secondary period. binary vs oscillatory convective modes

B. Courtney-Barrer, X. Haubois, P. Wood +6

Long secondary periods (LSPs) occur in about one-third of evolved stars, yet their origin remains unclear. The leading explanations are oscillatory convective modes and a binary co…