MUSE-ALMA Haloes XIV: The ALMA Large Programme Data Release

@misc{peroux2026musealma,
  title = {{MUSE-ALMA Haloes XIV: The ALMA Large Programme Data Release}},
  author = {Céline Péroux and Jianhang Chen and Victoria Bollo and Tamsyn O'Beirne and Capucine Barfety and Simon Weng and Ramona Augustin and Benedetta Casavecchia and Martin Zwaan and Linda Tacconi and Natascha Föster Schreiber and Laurent Chemin and Varsha Kulkarni},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.10112},
  eprint = {2610.10112},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.10112},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - MUSE-ALMA Haloes XIV: The ALMA Large Programme Data Release
AU  - Céline Péroux
AU  - Jianhang Chen
AU  - Victoria Bollo
AU  - Tamsyn O'Beirne
AU  - Capucine Barfety
AU  - Simon Weng
AU  - Ramona Augustin
AU  - Benedetta Casavecchia
AU  - Martin Zwaan
AU  - Linda Tacconi
AU  - Natascha Föster Schreiber
AU  - Laurent Chemin
AU  - Varsha Kulkarni
PY  - 2026
DA  - 2026/10/07
PB  - arXiv
DO  - 10.48550/arxiv.2610.10112
UR  - https://arxiv.org/abs/2610.10112
AB  - The interactions between gas and galaxies are of paramount importance to our understanding of structure formation. A fundamental element of such baryon cycle studies is a complete census of the condensed matter (stars and cold gas) in both galaxies and their immediate surroundings, the so-called circumgalactic medium. Of particular importance are the processes of converting molecular gas into stars and deciphering whether this <100K gas is tracing gas flows. The MUSE-ALMA Haloes survey has assembled probes of the neutral atomic gas HI, ionised gas and stellar component for a sample of 79 z∼0.5 galaxies. This is achieved by combining absorption line spectroscopy of background quasars with projected impact parameter as low as 5 kpc and up to 250 kpc to probe the low density circumgalactic gas with emission line tracers of both ionised gas and stars. This paper presents the Large Programme observational set-up and releases the data characterising the molecular phase of some of the MUSE-ALMA Haloes targets so as to reach a complete census of their condensed baryons. ALMA's unique millimetre coverage and high sensitivity is ideal to characterise the CO emission of these z∼0.5 HI-selected galaxies. By measuring the molecular mass, kinematics, gas flows and gas fractions, this project then: i) quantifies the role of molecular gas in HI-rich galaxies, ii) characterises the molecular phase of gas flows from morpho-kinematics analyses, and iii) establishes a census of the condensed baryons in the interstellar and circumgalactic media. Ultimately, these results will provide unique insights into the baryon cycle - a crucial component of galaxy formation.
ER  -