@article{01HH4SCS7KKY5BQ2S7SQW1RC3G,
  abstract     = {{Context. The final stages of molecular cloud evolution involve cloud disruption due to feedback by massive stars, with recent literature suggesting the importance of early (i.e., pre-supernova) feedback mechanisms.
Aims. We aim to determine whether feedback from massive stars in H II regions has a measurable impact on the physical properties of molecular clouds at a characteristic scale of similar to 100 pc, and whether the imprint of feedback on the molecular gas depends on the local galactic environment.
Methods. We identified giant molecular clouds (GMCs) associated with H II regions for a sample of 19 nearby galaxies from catalogs of GMCs and H II regions released by the PHANGS-ALMA and PHANGS-MUSE surveys, using the overlap of the CO and Ha emission as the key criterion for physical association. We compared the distributions of GMC and H II region properties for paired and non-paired objects. We investigated correlations between GMC and H II region properties among galaxies and across different galactic environments to determine whether GMCs that are associated with H II regions have significantly distinct physical properties compared to the parent GMC population.
Results. We identify trends between the Ha luminosity of an H II region and the CO peak brightness and molecular mass of GMCs that we tentatively attribute to a direct physical connection between the matched objects, and which arise independently of the underlying environmental variations of GMC and H II region properties within galaxies. The study of the full sample nevertheless hides a large galaxy-to-galaxy variability.
Conclusions. At the similar to 100 pc scales accessed by the PHANGS-ALMA and PHANGS-MUSE data, pre-supernova feedback mechanisms in H II regions have a subtle but measurable impact on the properties of the surrounding molecular gas, as inferred from CO observations.}},
  articleno    = {{A171}},
  author       = {{Zakardjian, Antoine and Pety, Jérôme and Herrera, Cinthya N. and Hughes, Annie and Oakes, Elias and Kreckel, Kathryn and Faesi, Chris and Glover, Simon C. O. and Groves, Brent and Klessen, Ralf S. and van der Wel, Sharon Meidt and Barnes, Ashley and Belfiore, Francesco and Bešlić, Ivana and Bigiel, Frank and Blanc, Guillermo A. and Chevance, Mélanie and Dale, Daniel A. and den Brok, Jakob and Eibensteiner, Cosima and Emsellem, Eric and García-Rodríguez, Axel and Grasha, Kathryn and Koch, Eric W. and Leroy, Adam K. and Liu, Daizhong and Mc Elroy, Rebecca and Neumann, Lukas and Pan, Hsi-An and Querejeta, Miguel and Razza, Alessandro and Rosolowsky, Erik and Saito, Toshiki and Santoro, Francesco and Schinnerer, Eva and Sun, Jiayi and Usero, Antonio and Watkins, Elizabeth J. and Williams, Thomas}},
  issn         = {{0004-6361}},
  journal      = {{ASTRONOMY & ASTROPHYSICS}},
  keywords     = {{Space and Planetary Science,Astronomy and Astrophysics,HII regions,ISM: clouds,evolution,galaxies: ISM,STAR-FORMATION EFFICIENCY,STELLAR FEEDBACK,YOUNG STAR,FORMATION CYCLE,SPIRAL GALAXY,HII-REGIONS,GAS,DEPENDENCE,EVOLUTION,CO}},
  language     = {{eng}},
  pages        = {{31}},
  title        = {{The impact of H II regions on giant molecular cloud properties in nearby galaxies sampled by PHANGS ALMA and MUSE}},
  url          = {{http://doi.org/10.1051/0004-6361/202244520}},
  volume       = {{678}},
  year         = {{2023}},
}

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