The temperature and metallicity distributions of the ICM: insights with TNG-Cluster for XRISM-like observations

01/04/2026 - High-Energy

The new era of high-resolution X-ray spectroscopy will significantly improve our understanding of the intracluster medium (ICM) by providing precise constraints on its underlying physical properties. However, spectral fitting requires reasonable assumptions on the thermal and chemical distributions of the gas. We use the output of TNG-Cluster, the newest addition to the IllustrisTNG suite of…

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The VLT/ERIS grating vector Apodizing Phase Plate coronagraph: Design and on-sky performance

01/04/2026 - Technology

Aims. We describe the design, laboratory manufacture, and on-sky testing of the grating vector apodizing phase plate (gvAPP) coronagraph for the Enhanced Resolution Imager and Spectrograph (ERIS) on the Very Large Telescope. Methods. We used both laboratory measurements and on-sky observations to characterise the gvAPP in several different filters, from the K to the L…

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Exoplanet climate characterization with transit asymmetries: A comprehensive population study from the optical to the infrared

01/04/2026 - Exoplanets

Context. Space missions such as CHEOPS, JWST, and PLATO facilitate detailed characterization of exoplanets, particularly close-in gas giants and their wide range of global temperatures and climate regimes. Aims. The aim of this work is to provide a framework to characterize cloud and climate properties of close-in gas giants via transit depth asymmetries from the…

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