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Unveiling the diversity of H II regions in M33 with MUSE (Subtitle)

• Feltre, Anna

https://www.eso.org/sci/doidownload/script/109.22XS

2026

European Southern Observatory (ESO)

Dataset/Dataset

Abstract: This is the public release of VLT/MUSE integral field spectroscopy observations of a 3'×8' mosaic along the southern major axis of the Local Group spiral galaxy M33, obtained under ESO Programme 109.22XS (PI: G. Cresci). The observations were carried out in seeing-limited wide-field mode (WFM), covering the nominal wavelength range 4750 and 9350 Å . The final mosaic comprises 24 pointings, corresponding to a total sky coverage of ~24 arcmin² (~1.43 kpc² at the distance of M33), with a spatial sampling of 0.2″ per pixel (≈0.8 pc physical scale). The released product is a fully reduced and flux- calibrated datacube with an associated ancillary file containing the emission-line maps. This collection enables spatially resolved studies of ionised gas and stellar feedback at parsec scales in a nearby spiral galaxy. The dataset has been used to identify and characterise 131 H II regions within the mosaic footprint through dendrogram analysis. The data product and the associated nebular catalogue (published at CDS: J/A+A/706/A367), including integrated emission-line fluxes and derived physical properties, are presented in Feltre et al. (A&A, 706, A367, 2026).
Other: This is a dynamic dataset; it is growing as new data is added. The DOI refers to the newest available dataset.

ContactPerson: Belfiore, Francesco
ContactPerson: Cresci, Giovanni

collection_name:109.22XS collection_type:Normal Programme instrument:MUSE

References: https://archive.eso.org/ (URL)

Issued: 2026-06-03

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