@article{8747473,
  abstract     = {{We describe the processing of the PHANGS-ALMA survey and present the PHANGS-ALMA pipeline, a public software package that processes calibrated interferometric and total power data into science-ready data products. PHANGS-ALMA is a large, high-resolution survey of CO(2-1) emission from nearby galaxies. The observations combine ALMA's main 12 m array, the 7 m array, and total power observations, and use mosaics of dozens to hundreds of individual pointings. We describe the processing of the u - v data, imaging and deconvolution, linear mosaicking, combining interferometer and total power data, noise estimation, masking, data product creation, and quality assurance. Our pipeline has a general design and can also be applied to Very Large Array and ALMA observations of other spectral lines and continuum emission. We highlight our recipe for deconvolution of complex spectral line observations, which combines multiscale clean, single-scale clean, and automatic mask generation in a way that appears robust and effective. We also emphasize our two-track approach to masking and data product creation. We construct one set of "broadly masked" data products, which have high completeness but significant contamination by noise, and another set of "strictly masked" data products, which have high confidence but exclude faint, low signal-to-noise emission. Our quality assurance tests, supported by simulations, demonstrate that 12 m+7 m deconvolved data recover a total flux that is significantly closer to the total power flux than the 7 m deconvolved data alone. In the appendices, we measure the stability of the ALMA total power calibration in PHANGS-ALMA and test the performance of popular short-spacing correction algorithms.}},
  articleno    = {{43}},
  author       = {{Leroy, Adam K. and Schinnerer, Eva and Hughes, Annie and Rosolowsky, Erik and Pety, Jérôme and Schruba, Andreas and Usero, Antonio and Blanc, Guillermo A. and Chevance, Mélanie and Emsellem, Eric and Faesi, Christopher M. and Herrera, Cinthya N. and Liu, Daizhong and van der Wel, Sharon Meidt and Querejeta, Miguel and Saito, Toshiki and Sandstrom, Karin M. and Sun, Jiayi and Williams, Thomas G. and Anand, Gagandeep S. and Barnes, Ashley T. and Behrens, Erica A. and Belfiore, Francesco and Benincasa, Samantha M. and Bešlić, Ivana and Bigiel, Frank and Bolatto, Alberto D. and den Brok, Jakob S. and Cao, Yixian and Chandar, Rupali and Chastenet, Jérémy and Chiang, I. -Da and Congiu, Enrico and Dale, Daniel A. and Deger, Sinan and Eibensteiner, Cosima and Egorov, Oleg V. and García-Rodríguez, Axel and Glover, Simon C.~O. and Grasha, Kathryn and Henshaw, Jonathan D. and Ho, I. -Ting and Kepley, Amanda A. and Kim, Jaeyeon and Klessen, Ralf S. and Kreckel, Kathryn and Koch, Eric W. and Kruijssen, J.~M. Diederik and Larson, Kirsten L. and Lee, Janice C. and Lopez, Laura A. and Machado, Josh and Mayker, Ness and McElroy, Rebecca and Murphy, Eric J. and Ostriker, Eve C. and Pan, Hsi-An and Pessa, Ismael and Puschnig, Johannes and Razza, Alessandro and Sánchez-Blázquez, Patricia and Santoro, Francesco and Sardone, Amy and Scheuermann, Fabian and Sliwa, Kazimierz and Sormani, Mattia C. and Stuber, Sophia K. and Thilker, David A. and Turner, Jordan A. and Utomo, Dyas and Watkins, Elizabeth J. and Whitmore, Bradley}},
  issn         = {{0067-0049}},
  journal      = {{ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES}},
  keywords     = {{847,653,1560,1061,594,262,136,391,573,1569,1338,1602,Astrophysics - Astrophysics of Galaxies,MOLECULAR GAS PROPERTIES,KINEMATICS}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{61}},
  title        = {{PHANGS-ALMA : arcsecond CO(2-1) imaging of nearby star-forming galaxies}},
  url          = {{http://doi.org/10.3847/1538-4365/ac17f3}},
  volume       = {{257}},
  year         = {{2021}},
}

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