Radboud University Nijmegen

Detection of a four-carbon sugar in interstellar space

Izaskun Jimenez-Serra, Juan Garcia de la Concepcion, Herma M. Cuppen +19

Sugars are essential biomolecules, serving as metabolic fuels, nucleic acid backbone components, and structural or energy-storage polymers. A central question in origin-of-life res…

Full-polarization millimeter wavelength variability of Sagittarius A* during the 2018 EHT campaign

Ezequiel Albentosa-Ruiz, Jasmin E. Washington, Nicola Marchili +272

Sagittarius A* (Srg A*), the supermassive black hole at the center of the Milky Way, provides a unique laboratory to study accretion dynamics and plasma processes near the event ho…

JWST MIRI-MRS observations of the Red Rectangle: AIB class transformation in the outer nebula

A. Ebenbichler, P. Moraga Baez, A. Candian +8

Aims: We characterize the mid-infrared spectrum of the outer regions of the Red Rectangle nebula to probe the carbonaceous dust and molecular content beyond the circumbinary disk.…

LeMMINGs VII: 5 GHz, 50 mas e-MERLIN observations of a statistically complete sample of nearby AGN

D. R. A. Williams-Baldwin, R. D. Baldi, R. J. Beswick +36

We present 5 GHz e-MERLIN radio images at 50 mas resolution of the nuclear regions of the Legacy e-MERLIN Multi-band Imaging of Nearby Galaxies survey (LeMMINGs), the deepest stati…

astro-ph.GA2026★ 17 cited

Detection of CO $_{2}$ ice in the planetary nebula NGC 6302

Charmi Bhatt, Simon W. Cao, Jan Cami +20

Using JWST/MIRI observations, we report the detection of CO $_{2}$ ice in the dusty torus of the planetary nebula NGC 6302, an environment generally considered hostile to fragile mole…

astro-ph.GA2026★ 2 cited

A Robust Analysis of QU-fitting Behavior for 800-1088 MHz and 1296-1440 MHz

Lindsey Oberhelman, Cameron L. Van Eck, N. M. McClure-Griffiths +9

QU-fitting is a powerful tool for interpreting spectro-polarimetric radio continuum observations by linking them to physical models, enabling estimates of the magnetic fields in, f…

The LOFAR Two-metre Sky Survey: VII. Third Data Release

T. W. Shimwell, M. J. Hardcastle, C. Tasse +99

We present the third data release of the LOFAR Two-metre Sky Survey (LoTSS-DR3). The survey images cover 88% of the northern sky and were created from 12,950 hrs of data (18.6 PB)…

astro-ph.GA2026★ 1 cited

One-dimensional and time-dependent modelling of complex organic molecules in protostars

Le Ngoc Tram, Serena Viti, Katarzyna M. Dutkowska +5

Complex organic molecules (COMs), the building blocks of life, have been extensively detected under various physical conditions, from quiescent clouds to star-forming regions. They…

Euclid: Early Release Observations -- The extended stellar component of the IC10 dwarf galaxy

F. Annibali, A. M. N. Ferguson, P. M. Sanchez-Alarcon +175

We present a detailed analysis of the old, extended stellar component of the Local Group dwarf galaxy IC 10 using deep resolved-star photometry in the VIS and NISP bands of the Euc…

A sensitivity analysis of interstellar ice chemistry in astrochemical models

Tobias M. Dijkhuis, Thanja Lamberts, Serena Viti +1

Astrochemical models are essential to bridge the gap between the timescales of reactions, experiments, and observations. Ice chemistry in these models experiences a large computati…

Refining open cluster parameters with Gaia XP metallicities

M. Nizovkina, S. S. Larsen, A. G. A. Brown +1

The precision of cluster parameter determination has significantly improved with the availability of homogeneous photometric Gaia data, however, challenges such as age-metallicity…

Detection of CH3+ in the O-rich planetary nebula NGC 6302

Charmi Bhatt, Jan Cami, Els Peeters +33

Planetary nebulae are sites where ejected stellar material evolves into complex molecules, but the precise physical conditions and chemical routes that govern these processes are u…

astro-ph.GA2025★ 2 cited

Euclid: Early Release Observations -- The star cluster systems of the Local Group dwarf galaxies IC 10 and NGC 6822

J. M. Howell, A. M. N. Ferguson, S. S. Larsen +149

Star clusters are valuable indicators of galaxy evolution, offering insights into the buildup of stellar populations across cosmic time. Understanding intrinsic star cluster popula…

A test of Ca ii H & K photometry for isolating massive globular clusters below the metallicity floor

Bas van Heumen, William E. Harris, Søren S. Larsen +1

The serendipitous discovery of the M31 globular cluster (GC) EXT8 has presented a significant challenge to current theories for GC formation. By finding other GCs similar to EXT8,…

astro-ph.GA2025★ 6 cited

A catalog to unite them all: REGALADE, a revised galaxy compilation for the advanced detector era

Hugo Tranin, Nadejda Blagorodnova, Marco A. Gómez-Muñoz +10

Many applications in transient science, gravitational wave follow-up, and galaxy population studies require all-sky galaxy catalogs with reliable distances, extents, and stellar ma…

astro-ph.GA2025★ 5 cited

PDRs4All XV: CH radical and H $_{3}^{+}$ molecular ion in the irradiated protoplanetary disk d203-506

I. Schroetter, O. Berné, J. R. Goicoechea +20

Most protoplanetary disks experience a phase in which they are subjected to strong ultraviolet radiation from nearby massive stars. This UV radiation can substantially alter their…

CO desorption from interstellar icy grains induced by IR excitation of superhydrogenated PAHs

L. Slumstrup, J. D. Thrower, A. T. Hopkinson +6

Infrared (IR) radiation dominates dense, interstellar clouds, yet its effect on icy grains remains largely unexplored. Its potential role in driving the photodesorption of volatile…

astro-ph.GA2025★ 4 cited

Investigating silicate, carbon, and water in the diffuse interstellar medium: the first shots from WISCI

S. T. Zeegers, Jonathan P. Marshall, Karl D. Gordon +33

The dusty interstellar medium (ISM) of the Milky Way is distributed in a complex, cloudy structure. It is fundamental to the radiation balance within the Milky Way, provides a reac…

First joint absorption and T $_{e}$ -based metallicity measured in a GRB host galaxy at $z = 4.28$ using JWST/NIRSpec

Anne Inkenhaag, Patricia Schady, Phil Wiseman +20

We present the first gamma-ray burst (GRB) host galaxy with a measured absorption line and electron temperature (T $_{e}$ ) based metallicity, using the temperature sensitive [OIII] $λ$ …

Interstellar Polarization Survey. V. Galactic magnetic field tomography in the spiral arms using optical and near-infrared starlight polarization

Y. Angarita, M. J. F. Versteeg, M. Haverkorn +5

Interstellar linear polarization occurs when starlight passes through elongated dust grains aligned by interstellar magnetic fields. The observed polarization can come from differe…