PyBDSF Source Catalogue
The column descriptions provided are taken from the PyBDSF documentation. See https://www.astron.nl/citt/pybdsf/index.html for full details. The PyBDSF parameters used to generate the source and Gaussian catalogue are described in detail in Tasse+19 and Sabater+19
Column Descriptions
| Column | Units | Description |
|---|---|---|
Source_id |
a unique number that identifies the Source, starting from zero | |
Isl_id |
a unique number that identifies the Island, starting from zero | |
RA |
deg | the right ascension of the source (for the equinox of the image) |
E_RA |
deg | the error on the right ascension of the source |
DEC |
deg | the declination of the source (for the equinox of the image) |
E_DEC |
deg | the 1-sigma error on the declination of the source |
Total_flux |
Jy | the total, integrated Stokes I flux density of the source at the reference frequency |
E_Total_flux |
Jy | the 1-sigma error on the total flux density of the source |
Peak_flux |
Jy/bm | the peak Stokes I flux density per beam of the source |
E_Peak_flux |
Jy/bm | the 1-sigma error on the peak flux density per beam of the source |
RA_max |
deg | the right ascension of the maximum of the source (for the equinox of the image) |
E_RA_max |
deg | the 1-sigma error on the right ascension of the maximum of the source |
DEC_max |
deg | the declination of the maximum of the source (for the equinox of the image) |
E_DEC_max |
deg | the 1-sigma error on the declination of the maximum of the source |
Maj |
deg | the FWHM of the major axis of the source |
E_Maj |
deg | the 1-sigma error on the FWHM of the major axis of the source |
Min |
deg | the FWHM of the minor axis of the source |
E_Min |
deg | the 1-sigma error on the FWHM of the minor axis of the source |
PA |
deg | the position angle of the major axis of the source measured east of north |
E_PA |
deg | the 1-sigma error on the position angle of the major axis of the source |
Maj_img_plane |
deg | the FWHM of the major axis of the source in the image plane |
E_Maj_img_plane |
deg | the 1-sigma error on the FWHM of the major axis of the source in the image plane |
Min_img_plane |
deg | the FWHM of the minor axis of the source in the image plane |
E_Min_img_plane |
deg | the 1-sigma error on the FWHM of the minor axis of the source in the image plane |
PA_img_plane |
deg | the position angle in the image plane of the major axis of the source measured east of north |
E_PA_img_plane |
deg | the 1-sigma error on the position angle in the image plane of the major axis of the source |
DC_Maj |
deg | the FWHM of the deconvolved major axis of the source |
E_DC_Maj |
deg | the 1-sigma error on the FWHM of the deconvolved major axis of the source |
DC_Min |
deg | The FWHM of the deconvolved minor axis of the source |
E_DC_Min |
deg | The 1-sigma error on the FWHM of the deconvolved minor axis of the source |
DC_PA |
deg | the position angle of the deconvolved major axis of the source measured east of north |
E_DC_PA |
deg | the 1-sigma error on the position angle of the deconvolved major axis of the source |
DC_Maj_img_plane |
deg | the FWHM of the deconvolved major axis of the source in the image plane |
E_DC_Maj_img_plane |
deg | the 1-sigma error on the FWHM of the deconvolved major axis of the source in the image plane |
DC_Min_img_plane |
deg | the FWHM of the deconvolved minor axis of the source in the image plane |
E_DC_Min_img_plane |
deg | the 1-sigma error on the FWHM of the deconvolved minor axis of the source in the image plane |
DC_PA_img_plane |
deg | the position angle in the image plane of the deconvolved major axis of the source measured east of north |
E_DC_PA_img_plane |
deg | the 1-sigma error on the position angle in the image plane of the deconvolved major axis of the source |
Isl_Total_flux |
Jy | the total, integrated Stokes I flux density of the island in which the source is located. This value is calculated from the sum of all non-masked pixels in the island with values above thresh_isl |
E_Isl_Total_flux |
Jy | the 1-sigma error on the total flux density of the island in which the source is located |
Isl_rms |
Jy/bm | the average background rms value of the island |
Isl_mean |
Jy/bm | the averge background mean value of the island |
Resid_Isl_rms |
Jy/bm | the average residual background rms value of the island |
Resid_Isl_mean |
Jy/bm | the averge residual background mean value of the island |
S_Code |
A code that defines the source structure 'S' for single Gaussian, 'M' for multiple Gaussian, 'C' = a single-Gaussian source in an island with other sources |