Mostert et al., 2022 describe a method to automatically perform radio source-component associations for sources within the LOFAR Two-metre Sky Survey.

Below we provide for reproducibility:

Data products

Input products
• PyBDSF detected LoTSS-DR1 sourcelist
• Gaussian catalogue List of Gaussians that make up the PyBDSF detected sources. This list is used when removing likely unrelated background sources from cutouts during pre-processing.
• Manually corrected LoTSS-DR1 catalogue (with associated source-components).
• Component catalogue linking the PyBDSF detected sources to the manually corrected LoTSS-DR1 catalogue
• GBC table described by Alegre et al. 2022
• LoTSS-DR2 images described by Shimwell et al (2022)
Output products
• Model predicted radio catalogue for large and bright sources of the test set of LoTSS-DR1
• Component catalogue linking the PyBDSF detected sources to the model predicted radio catalogue above

Code repositories

• Pre-processing code
• Adapted Fast R-CNN

If you make any scientific use of these data, we kindly request that you include the following acknowledgment:

LOFAR is the Low Frequency Array designed and constructed by ASTRON. It has observing, data processing, and data storage facilities in several countries, which are owned by various parties (each with their own funding sources), and which are collectively operated by the ILT foundation under a joint scientific policy. The ILT resources have benefited from the following recent major funding sources: CNRS-INSU, Observatoire de Paris and Université d'Orléans, France; BMBF, MIWF-NRW, MPG, Germany; Science Foundation Ireland (SFI), Department of Business, Enterprise and Innovation (DBEI), Ireland; NWO, The Netherlands; The Science and Technology Facilities Council, UK; Ministry of Science and Higher Education, Poland; The Istituto Nazionale di Astrofisica (INAF), Italy. This research made use of the Dutch national e-infrastructure with support of the SURF Cooperative (e-infra 180169) and the LOFAR e-infra group. The Jülich LOFAR Long Term Archive and the German LOFAR network are both coordinated and operated by the Jülich Supercomputing Centre (JSC), and computing resources on the supercomputer JUWELS at JSC were provided by the Gauss Centre for Supercomputing e.V. (grant CHTB00) through the John von Neumann Institute for Computing (NIC). This research made use of the University of Hertfordshire high-performance computing facility and the LOFAR-UK computing facility located at the University of Hertfordshire and supported by STFC [ST/P000096/1], and of the Italian LOFAR IT computing infrastructure supported and operated by INAF, and by the Physics Department of Turin university (under an agreement with Consorzio Interuniversitario per la Fisica Spaziale) at the C3S Supercomputing Centre, Italy.