SoFiA 2: An automated, parallel HI source finding pipeline

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Ada Coda
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SoFiA 2: An automated, parallel HI source finding pipeline

Post by Ada Coda » Wed Sep 29, 2021 1:47 am

SoFiA 2: An automated, parallel HI source finding pipeline

Abstract: SoFiA 2 is a fully automated spectral-line source finding pipeline originally intended for the detection of galaxies in large HI data cubes. It is a reimplementation of parts of the original SoFiA pipeline (ascl:1412.001) in the C programming language and uses OpenMP for multithreading, making it substantially faster and more memory-efficient than its predecessor. At its core, SoFiA 2 uses the Smooth + Clip algorithm for source finding which operates by spatially and spectrally smoothing the data on multiple scales and applying a user-defined flux threshold relative to the noise level in each iteration. A wide range of useful preconditioning and post-processing filters is available, including noise normalization, flagging of artifacts and reliability filtering. In addition to global data products and source catalogs in different formats, SoFiA 2 can also generate cutout images and spectra for each individual detection.

Credit: Westmeier, Tobias; Kitaeff, Slava; Pallot, Dave; Serra, Paolo; van der Hulst, Thijs; Jurek, Russell J.; Elagali, Ahmed; For, Bi-Qing; Kleiner, Dane; Koribalski, Bärbel S.; Lee-Waddell, Karen; Mould, Jeremy R.; Reynolds, Tristan N.; Rhee, Jonghwan; Staveley-Smith, Lister

Site: https://github.com/SoFiA-Admin/SoFiA-2
https://ui.adsabs.harvard.edu/abs/2021MNRAS.506.3962W

Bibcode: 2021ascl.soft09005W

ID: ascl:2109.005

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