PHANGS-ALMA Data Processing and Pipeline
Article
Leroy, Adam K., Hughes, Annie, Liu, Daizhong, Pety, Jérôme, Rosolowsky, Erik, Saito, Toshiki, Schinnerer, Eva, Schruba, Andreas, Usero, Antonio, Faesi, Christopher M., Herrera, Cinthya N., Chevance, Mélanie, Hygate, Alexander P. S., Kepley, Amanda A., Koch, Eric W., Querejeta, Miguel, Sliwa, Kazimierz, Will, David, Wilson, Christine D., ..., Williams, T.G.. 2021. "PHANGS-ALMA Data Processing and Pipeline." Astrophysical Journal Supplement Series. 255 (1). https://doi.org/10.3847/1538-4365/abec80
| Article Title | PHANGS-ALMA Data Processing and Pipeline |
|---|---|
| ERA Journal ID | 1058 |
| Article Category | Article |
| Authors | Leroy, Adam K., Hughes, Annie, Liu, Daizhong, Pety, Jérôme, Rosolowsky, Erik, Saito, Toshiki, Schinnerer, Eva, Schruba, Andreas, Usero, Antonio, Faesi, Christopher M., Herrera, Cinthya N., Chevance, Mélanie, Hygate, Alexander P. S., Kepley, Amanda A., Koch, Eric W., Querejeta, Miguel, Sliwa, Kazimierz, Will, David, Wilson, Christine D., Anand, Gagandeep S., Barnes, Ashley, Belfiore, Francesco, Bešlić, Ivana, Bigiel, Frank, Blanc, Guillermo A., Bolatto, Alberto D., Boquien, Mèdèric, Cao, Yixian, Chandar, Rupali, Chastenet, Chastenet, Chiang, I-Da, Congiu, Enrico, Dale, Daniel A., Deger, Sinan, den Brok, Jakob S., Eibensteiner, Cosima, Emsellem, Eric, García-Rodríguez, Axel, Glover, Simon C. O., Grasha, Kathryn, Groves, Brent, Henshaw, Jonathan D., Jiménez Donaire, María J., Kim, Jaeyeon, Klessen, Ralf S., Kreckel, Kathryn, Kruijssen, J. M. Diederik, Larson, Kirsten L., Lee, Janice C., Mayker, Ness, McElroy, Rebecca, Meidt, Sharon E., Mok, Angus, Pan, Hsi-An, Puschnig, Johannes, Razza, Alessandro, Sanchez-Blazquez, Patricia, Sandstrom, Karin M., Santoro,Francesco, Sardone, Amy, Scheuermann, Fabian, Sun, Jiayi, Thilker, David A., Turner, Jordan A., Ubeda, Leonardo, Utomo, Dyas, Watkins, Elizabeth J. and Williams, T.G. |
| Journal Title | Astrophysical Journal Supplement Series |
| Journal Citation | 255 (1) |
| Article Number | 19 |
| Number of Pages | 54 |
| Year | 2021 |
| Publisher | IOP Publishing |
| Place of Publication | United States |
| ISSN | 0067-0049 |
| 1538-4365 | |
| Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-4365/abec80 |
| Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-4365/abec80 |
| 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. |
| Keywords | Radio interferometry; CO line emission; Interstellar medium |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 510102. Astronomical instrumentation |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Ohio State University, United States |
| National center for scientific research (CNRS), France | |
| University of Toulouse, France | |
| Max Planck Institute for Astronomy, Germany | |
| Institut de Radioastronomie Millimetrique (IRAM), France | |
| Sorbonne University, France | |
| University of Alberta, Canada | |
| Max Planck Institute for Extraterrestrial Physics, Germany | |
| National Astronomical Observatory (IGN), Spain | |
| University of Massachusetts, United States | |
| Heidelberg University, Germany | |
| Leiden University, Netherlands | |
| National Radio Astronomy Observatory, United States | |
| McMaster University, Canada | |
| University of Hawaii, United States | |
| University of Bonn, Germany | |
| INAF - Arcetri Astrophysical Observatory, Italy | |
| Carnegie Institution for Science, United States | |
| University of Chile, Chile | |
| University of Maryland, United States | |
| University of Antofagasta, Chile | |
| Aix-Marseille University, France | |
| University of Toledo, United States | |
| University of California San Diego, United States | |
| Aarhus University, Denmark | |
| California Institute of Technology (Caltech), United States | |
| Infrared Processing and Analysis Center (IPAC), United States | |
| European Southern Observatory (ESO), Germany | |
| University of Lyon, France | |
| Australian National University | |
| University of Western Australia | |
| University of Sydney | |
| University of Gent, Belgium | |
| Complutense University of Madrid, Spain | |
| Johns Hopkins University, United States | |
| Space Telescope Science Institute, United States |
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https://research.usq.edu.au/item/z75v8/phangs-alma-data-processing-and-pipeline
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