Table A.1.
Description of the columns in the merged mosaic source catalogue (S) and the Gaussian-component catalogue (G).
| Column name | Units | Catalogue(s) | Description |
|---|---|---|---|
| Source_Name | – | S, G | The radio name of the source in the format "ILTJHHMMSS.s+DDMMSS" |
| RA | deg | S, G | Right ascension (J2000) |
| E_RA | arcsec | S, G | Uncertainty in right ascension |
| DEC | deg | S, G | Declination (J2000) |
| E_DEC | arcsec | S, G | Uncertainty in declination |
| Total_flux | mJy | S, G | Integrated Stokes I flux density at 144 MHz |
| E_Total_flux | mJy | S, G | Uncertainty in integrated Stokes I flux density |
| Peak_flux | mJy beam−1 | S, G | Peak Stokes I flux density at 144 MHz per beam of the source |
| E_Peak_flux | mJy beam−1 | S, G | Uncertainty in peak Stokes I flux density per beam of the source |
| Maj | arcsec | S, G | Fitted FWHM of the major axis of the source |
| E_Maj | arcsec | S, G | Uncertainty in FWHM of the fitted major axis |
| Min | arcsec | S, G | Fitted FWHM of the minor axis of the source |
| E_Min | arcsec | S, G | Uncertainty in FWHM of the fitted minor axis |
| PA | deg | S, G | Fitted position angle of the major axis of the source measured east of north |
| E_PA | deg | S, G | Uncertainty in fitted position angle of the major axis of the source |
| DC_Maj | arcsec | S, G | Deconvolved FWHM of the major axis of the source |
| E_DC_Maj | arcsec | S, G | Uncertainty in deconvolved FWHM of the major axis |
| DC_Min | arcsec | S, G | Deconvolved FWHM of the minor axis of the source |
| E_DC_Min | arcsec | S, G | Uncertainty in deconvolved FWHM of the minor axis |
| DC_PA | deg | S, G | Deconvolved position angle of the major axis of the source measured east of north |
| E_DC_PA | deg | S, G | Uncertainty in deconvolved position angle of the major axis of the source |
| Isl_Total_flux | mJy | S, G | Integrated Stokes I flux density of the island in which the source is located |
| E_Isl_Total_flux | mJy | S, G | Uncertainty in integrated Stokes I flux density of the island |
| Isl_rms | mJy beam−1 | S, G | Average background RMS value of the island in which the source is located |
| S_Code | – | S, G | Source classification code. S = a single-Gaussian source that is the only source in the island; C = a single-Gaussian source in an island with other sources; M = a multi-Gaussian source |
| HEALPIX | – | S, G | HEALPix pixel index of the source position, computed at NSIDE = 16. |
| Resolution | arcsec | S, G | The angular resolution of the mosaic image from which the source was extracted |
| Gaus_id | – | G | Unique identifier for Gaussian component, starting from zero |
| Wave_id | – | G | Wavelet scale from which the source was extracted, starting from zero |
| Xposn | pix | G | X image coordinate of the source |
| E_Xposn | pix | G | Uncertainty in X image coordinate |
| Yposn | pix | G | Y image coordinate of the source |
| E_Yposn | pix | G | Uncertainty in Y image coordinate |
| Wave_Isl_rms | Jy beam−1 | G | Average background RMS value of the island in the wavelet image in which the Gaussian was fit |
| Wave_Isl_mean | Jy beam−1 | G | Average background mean value of the island in the wavelet image in which the Gaussian was fit |
Notes. The listed columns are a subset of those output by PYBDSF, with additional columns identifying the mosaic in which each source was detected and providing the mosaic angular resolution. Quoted uncertainties are the statistical errors reported by PYBDSF; they do not include contributions from the uncertainties in the flux-density scale or astrometric alignment, which should be accounted for during analysis. The catalogues contain 13,667,877 sources corresponding to 16,943,656 Gaussian components.
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