@article{01HH4S8GD3S2GQ71NR0DMKFYF1,
  abstract     = {{A galaxy's morphology stems from the secular and environmental processes taking place over the course of its evolutionary history. Thus, it has consistently served as an important tool for gaining insights into galaxy evolution. In this work, we visually classified morphologies on cloud-scales based on the molecular gas distribution of a large sample of 79 nearby main sequence galaxies, using 1 & DPRIME; resolution CO(2-1) ALMA observations taken as part of the PHANGS survey. For this purpose, we devised a morphology classification scheme for different types of bars, spiral arms (grand-design, flocculent, multi-arm and smooth), and rings (central and non-central rings) that are similar to the well established optical ones. Furthermore, we introduced bar lane classes. In general, our cold gas-based morphologies is in good agreement with the ones based on stellar light. Both of our bars, as well as the grand-design spiral arms, are preferentially found at the higher mass end of our sample. Our gas-based classification indicates a potential for a misidentification of unbarred galaxies in the optical when massive star formation is present. Central or nuclear rings are present in a third of the sample, with a strong preference seen for barred galaxies (59%). As stellar bars are present in 45 & PLUSMN; 5% of our sample galaxies, we explore the utility of molecular gas as tracer of bar lane properties. We find that more curved bar lanes have a shorter radial extent in molecular gas and reside in galaxies with lower molecular to stellar mass ratios than those with straighter geometries. Galaxies display a wide range of CO morphologies and this work is aimed at providing a catalogue of morphological features in a representative sample of nearby galaxies.}},
  articleno    = {{A113}},
  author       = {{Stuber, Sophia K. and Schinnerer, Eva and Williams, Thomas G. and Querejeta, Miguel and van der Wel, Sharon Meidt and Emsellem, Éric and Barnes, Ashley and Klessen, Ralf S. and Leroy, Adam K. and Neumann, Justus and Sormani, Mattia C. and Bigiel, Frank and Chevance, Mélanie and Dale, Danny and Faesi, Christopher and Glover, Simon C. O. and Grasha, Kathryn and Diederik Kruijssen, J. M. and Liu, Daizhong and Pan, Hsi-an and Pety, Jérôme and Pinna, Francesca and Saito, Toshiki and Usero, Antonio and Watkins, Elizabeth J.}},
  issn         = {{0004-6361}},
  journal      = {{ASTRONOMY & ASTROPHYSICS}},
  keywords     = {{Space and Planetary Science,Astronomy and Astrophysics,galaxies,structure,spiral,ISM,STELLAR STRUCTURE,SPITZER SURVEY,SPIRAL STRUCTURE,BARRED GALAXIES,DISK GALAXIES,CLASSIFICATION-SYSTEM,SECULAR EVOLUTION,PATTERN SPEEDS,MOLECULAR GAS,GRAND DESIGN}},
  language     = {{eng}},
  pages        = {{26}},
  title        = {{The gas morphology of nearby star-forming galaxies}},
  url          = {{http://doi.org/10.1051/0004-6361/202346318}},
  volume       = {{676}},
  year         = {{2023}},
}

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