VLASS Epoch 1 Catalogs

PyBDSF and SExtractor detection catalogs for the VLA Sky Survey (VLASS)

Stroh, M. C., Terreran, G., Coppejans, D., Bright, J. and Margutti, R.

All authors currently at:
Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), 1800 Sherman Ave, 8th Floor, Evanston, IL 60201, USA
Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA

Corresponding author:
Stroh, M. C. - michael.stroh@northwestern.edu

General notes about the files:
These files were created using the epochs 1.1 and 1.2 quicklook files for the VLA Sky Survey (VLASS, Lacy et al. 2020). Original files are saved in a csv format, and have been subsequently compressed. The columns from each file are defined from PyBDSF (Mohan & Rafferty 2015) or Source Extractor (SExtractor, Bertin & Arnouts 1996) output with the file name appended to each row. Files are ordered by VLASS file name, then by the detection ID defined by PyBDSF or SExtractor.

Included files:
1) vlass_epoch1_pybdsf_gaussian.csv.gz

• Contains gaussian fits to detections in the VLASS epoch 1 Quick Look images using PyBDSF. These gaussians may be combined into sources in vlass_epoch1_pybdsf_source.csv.gz.

2) vlass_epoch1_pybdsf_source.csv.gz

• Contains final source lists from PyBDSF from the VLASS epoch 1 Quick Look images after gaussians have been combined.

3) vlass_epoch1_sextractor.csv.gz

• Contains detections from SExtractor in the VLASS epoch 1 Quick Look images.

Please refer to Stroh et al. (2021) for information on how PyBDSF and SExtractor were run to create these files.
For more information about specific columns, please refer to Mohan & Rafferty (2015) or Bertin & Arnouts (1996).

If using this catalog for publications, please cite Stroh et al. (2021).