This is the public release of VLT/MUSE integral field spectroscopy observations of a 3'x8' mosaic along the southern major axis of the Local Group spiral galaxy M33, obtained under ESO Programme 109.22XS.001 (PI: G. Cresci). The observations were carried out in seeing-limited wide-field mode (WFM), covering the nominal wavelength range 4750 and 9350 Å .
Public Release of VLT/MUSE Integral Field Spectroscopy
Published: 15 Jun 2026
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 include a fully reduced and flux-calibrated datacube and the emission-line maps published as an ancillary file (category: ANCILLARY.IMAGE).
This release 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), including integrated emission-line fluxes and derived physical properties, are presented in Feltre et al. (2026)
Users can query and download the data via the ESO Archive Science Portal or through programmatic access.
The DOI assigned to this data collection is doi.org/10.18727/archive/108, and further details are available in the release description.
The nebular catalogue is accessible from CDS at: J/A+A/706/A367.