MUSE-ALMA Haloes VII: Survey Science Goals & Design, Data Processing and Final Catalogues
C\'eline P\'eroux, Simon Weng, Arjun Karki, Ramona Augustin, Varsha P., Kulkarni, Roland Szakacs, Anne Klitsch, Aleksandra Hamanowicz, Alejandra Y., Fresco, Martin A. Zwaan, Andrew Biggs, Andrew J. Fox, Mattjew Hayes, J., Christopher Howk, Glenn G. Kacprzak, Susan Kassin

TL;DR
The MUSE-ALMA Haloes survey combines multi-wavelength observations from VLT/MUSE, ALMA, and HST to study the multi-phase circumgalactic medium and galaxy properties, providing comprehensive catalogs and data for understanding baryon distribution.
Contribution
This paper presents the survey design, target selection, data processing, and source catalogues for a multi-facility observational campaign focused on the circumgalactic medium and galaxy characterization.
Findings
Detection of 3658 sources across all fields.
Catalogues include magnitude measurements and spectroscopic redshifts.
Robust characterization of gas and stellar components in galaxy structures.
Abstract
The gas cycling in the circumgalactic regions of galaxies is known to be multi-phase. The MUSE-ALMA Haloes survey gathers a large multi-wavelength observational sample of absorption and emission data with the goal to significantly advance our understanding of the physical properties of such CGM gas. A key component of the MUSE-ALMA Haloes survey is the multi-facility observational campaign conducted with VLT/MUSE, ALMA and HST. MUSE-ALMA Haloes targets comprise 19 VLT/MUSE IFS quasar fields, including 32 0.85 strong absorbers with measured N cm from UV-spectroscopy. We additionally use a new complementary HST medium program to characterise the stellar content of the galaxies through a 40-orbit three-band UVIS and IR WFC3 imaging. Beyond the absorber-selected targets, we detect 3658 sources all fields combined, including 703 objects with…
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