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Our publications

01/01/2026 - High-Energy

XRISM Observations of the Prototypical Cold Front in A3667

We present high-resolution X-ray spectroscopy of the merging galaxy cluster A3667 with XRISM/Resolve. Two observations, targeting the cluster X-ray core and the prototypical cold front, were performed with exposures of 105 and 276 ks, respectively. We find that the gas in the core is blueshifted by vz ∼ −200 km s−1 relative to the brightest…

01/01/2026 - Exoplanets

HARPS-N, TESS, and CHEOPS discover a transiting sub-Neptune and two outer companions around the bright solar analogue HD 85426

We provide a detailed characterization of the planetary system orbiting HD 85426 (TOI-1774). This bright G-type star ($M_{ast }$: 0.99 $text{M}_{odot }$; $R_{ast }$: 1.13 $text{R}_{odot }$; age: 7.4 Gyr; V mag: 8.25) hosts a transiting sub-Neptune, HD 85426 b, with an orbital period of 16.71 d and a blackbody equilibrium temperature of $824^{+11}_{-11}$ K.…

01/01/2026 - Exoplanets

Spectropolarimetric characterisation of exoplanet host stars in preparation of the Ariel mission: II. The magnetised wind environment of TOI-1860, DS Tuc A, and HD 63433

Aims. We update the status of the spectropolarimetric campaign dedicated to characterise the magnetic field properties of a sample of known exoplanet-hosting stars included in the current target list of the Ariel mission. The main aims are to inform observing strategies and subsequent analysis of the data of the Ariel mission, and to provide background…

01/01/2026 - Exoplanets

ALMAGAL: V. Relations between the core populations and the parent clump physical properties

Context. The fragmentation of massive molecular clumps into smaller, potentially star-forming cores plays a key role in the processes of high-mass star formation. The ALMAGAL project, using the Atacama Large Millimeter/submillimeter Array (ALMA), offers highr-esolution data to investigate these processes across various evolutionary stages in the Galactic plane. Aims. This study aims at correlating the…

01/01/2026 - Exoplanets

Formation of cold giant planets around late M dwarfs via core accretion and the fate of inner rocky worlds

Context. Modeling how cold giant planets form around M dwarfs remains a challenge, both because their protoplanetary disks can lack sufficient mass and because such planets are expected to migrate inward while interacting with the disk. Moreover, it remains unknown whether inner rocky planets can survive in systems that host a cold giant around very…

01/01/2026 - High-Energy

A Chandra view of SPT-CL J0217─5014: A massive galaxy cluster at a cosmic intersection at z = 0.53

Context. Galaxy clusters trace the densest regions of the cosmic web and are crucial laboratories for studying the thermodynamic and chemical evolution of the intracluster medium (ICM). The massive galaxy cluster SPT-CL J0217−5014 (z ∼ 0.53; M500 ∼ 3 × 1014 M⊙) is one of the Swift X-Ray Telescope serendipitous galaxy clusters with the highest…

Publications