|21st of January 2015|
|Looking for HI in galaxies? Here is what you need!|
|by Paolo Serra (ATNF/CASS), Tobias Westmeier (UWA/ICRAR), et al.|
| Studying HI in galaxies can be challenging
in a number of different ways. You'll need to get your data, remove the
ever-annoying RFI, obtain a good calibration and make the HI cubes. At the
end of this all you'll still need to detect the HI - and this can be quite
tricky. Well, SoFiA is there to help you! |
SoFiA is a flexible source-finder for 3D spectral line data. It can be used on any cube (not just HI), and offers a number of different algorithms to: search for line emission on multiple scales; estimate the reliability of individual detections; look for signal in arbitrarily large cubes using a catalogue of coordinates as a prior; provide a wide range of source parameters and output products. And it comes with a beautiful GUI, too!
SoFiA is described in Serra et al. (2015, MNRAS, in press - arXiv:1501.03906) and is registered at the Astrophysics Source Code Library with ID ascl:1412.001. You can download SoFiA here.
|Credits: WALLABY source-finding group|