Table 1.
An example of entries in the LoTSS-DR2 source catalogue which contains a total of 4 396 228 sources and is derived from 120–168 MHz images (central frequency of 144 MHz) with a resolution of 6″.
| Source ID | RA | Dec | SP | SI | Maj | Min | DC_Maj | DC_Min | PA | RMS | Type | Mosaic | Number | Masked |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (mJy/ | (mJy) | (″) | (″) | (″) | (″) | (°) | (mJy/ | pointings | fraction | |||||
| beam) | beam) | |||||||||||||
| ILTJ075321.87 | 118.3411° | 27.9383° | 2.22 | 2.75 | 6.9 | 6.5 | 3.4 | 2.4 | 71 | 0.09 | S | P117+27 | 3 | 1.00 |
| +275617.7 | ±0.1″ | ±0.1″ | ±0.09 | ±0.19 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±28 | |||||
| ILTJ133639.64 | 204.1652° | 52.8310° | 0.51 | 0.76 | 7.5 | 7.2 | 4.5 | 3.9 | 114 | 0.06 | S | P5Hetdex41 | 3 | 0.50 |
| +524951.5 | ±0.4″ | ±0.4″ | ±0.06 | ±0.15 | ±1.0 | ±0.9 | ±1.0 | ±0.9 | ±115 | |||||
| ILTJ105955.28 | 164.9803° | 55.0005° | 0.28 | 2.13 | 21.9 | 12.7 | 21.1 | 11.1 | 92 | 0.07 | S | P164+55 | 4 | 0.00 |
| +550001.9 | ±2.1″ | ±1.0″ | ±0.06 | ±0.50 | ±4.9 | ±2.5 | ±4.9 | ±2.5 | ±24 | |||||
| ILTJ105319.51 | 163.3313° | 45.7868° | 0.62 | 0.77 | 7.3 | 6.2 | 4.1 | 1.5 | 6 | 0.06 | S | P163+45 | 4 | 0.87 |
| +454712.5 | ±0.3″ | ±0.3″ | ±0.07 | ±0.13 | ±0.8 | ±0.6 | ±0.8 | ±0.6 | ±29 | |||||
| ILTJ125532.50 | 193.8854° | 45.0397° | 0.48 | 0.78 | 8.8 | 6.6 | 6.5 | 2.8 | 83 | 0.13 | S | P32Hetdex08 | 3 | 0.00 |
| +450223.0 | ±1.2″ | ±0.7″ | ±0.13 | ±0.33 | ±2.7 | ±1.6 | ±2.7 | ±1.6 | ±45 | |||||
| ILTJ085443.03 | 133.6793° | 46.2299° | 0.76 | 1.17 | 8.0 | 6.9 | 5.3 | 3.4 | 124 | 0.08 | S | P133+47 | 4 | 0.50 |
| +461347.4 | ±0.4″ | ±0.4″ | ±0.09 | ±0.21 | ±1.0 | ±0.8 | ±1.0 | ±0.8 | ±34 | |||||
| ILTJ022403.60 | 36.0150° | 30.0882° | 13.00 | 30.94 | 9.2 | 8.9 | 7.0 | 6.6 | 102 | 0.10 | M | P036+31 | 3 | 1.00 |
| +300517.5 | ±0.0″ | ±0.0″ | ±0.10 | ±0.53 | ±0.1 | ±0.1 | ±0.1 | ±0.1 | ±10 | |||||
| ILTJ144426.07 | 221.1086° | 36.7295° | 0.62 | 0.79 | 7.1 | 6.5 | 3.9 | 2.4 | 161 | 0.11 | S | P219+37 | 3 | 0.00 |
| +364346.3 | ±0.5″ | ±0.6″ | ±0.11 | ±0.23 | ±1.3 | ±1.1 | ±1.3 | ±1.1 | ±80 | |||||
| ILTJ143748.86 | 219.4536° | 36.7022° | 2.21 | 2.93 | 7.1 | 6.7 | 3.8 | 3.0 | 170 | 0.07 | S | P219+37 | 3 | 1.00 |
| +364207.9 | ±0.1″ | ±0.1″ | ±0.08 | ±0.16 | ±0.2 | ±0.2 | ±0.2 | ±0.2 | ±28 | |||||
| ILTJ100259.85 | 150.7494° | 59.4202° | 0.66 | 0.98 | 7.4 | 7.2 | 4.4 | 4.1 | 90 | 0.06 | S | P150+60 | 4 | 0.81 |
| +592512.5 | ±0.3″ | ±0.3″ | ±0.06 | ±0.14 | ±0.7 | ±0.6 | ±0.7 | ±0.6 | ±138 | |||||
| ILTJ100138.17 | 150.4091° | 59.2853° | 0.61 | 0.92 | 7.7 | 7.0 | 4.9 | 3.5 | 177 | 0.06 | S | P150+60 | 3 | 0.86 |
| +591707.0 | ±0.3″ | ±0.3″ | ±0.06 | ±0.14 | ±0.8 | ±0.7 | ±0.8 | ±0.7 | ±40 | |||||
| ILTJ215336.49 | 328.4020° | 27.4076° | 0.95 | 1.45 | 8.2 | 6.7 | 5.6 | 3.0 | 64 | 0.15 | S | P330+28 | 2 | 0.75 |
| +272427.3 | ±0.6″ | ±0.5″ | ±0.15 | ±0.36 | ±1.5 | ±1.0 | ±1.5 | ±1.0 | ±36 | |||||
| ILTJ224657.98 | 341.7416° | 26.3063° | 0.25 | 1.93 | 18.3 | 15.3 | 17.3 | 14.1 | 25 | 0.10 | S | P341+26 | 2 | 0.00 |
| +261822.6 | ±2.4″ | ±2.7″ | ±0.09 | ±0.77 | ±6.6 | ±5.3 | ±6.6 | ±5.3 | ±93 | |||||
| ILTJ121006.34 | 182.5264° | 29.5820° | 17.91 | 69.08 | 30.0 | 8.0 | 29.4 | 5.3 | 85 | 0.11 | M | P183+30 | 3 | 1.00 |
| +293455.0 | ±0.0″ | ±0.2″ | ±0.11 | ±0.96 | ±0.6 | ±0.1 | ±0.6 | ±0.1 | ±1 | |||||
| ILTJ221407.92 | 333.5330° | 34.7886° | 8.90 | 15.92 | 9.1 | 7.1 | 6.8 | 3.7 | 97 | 0.10 | S | P334+36 | 2 | 1.00 |
| +344719.0 | ±0.0″ | ±0.0″ | ±0.10 | ±0.27 | ±0.1 | ±0.1 | ±0.1 | ±0.1 | ±2 | |||||
| ILTJ083500.48 | 128.7520° | 54.4843° | 0.74 | 2.31 | 12.3 | 9.1 | 10.8 | 6.9 | 50 | 0.12 | S | P128+54 | 5 | 0.62 |
| +542903.3 | ±0.8″ | ±0.7″ | ±0.12 | ±0.48 | ±2.2 | ±1.4 | ±2.2 | ±1.4 | ±27 | |||||
| ILTJ113243.58 | 173.1816° | 51.8272° | 0.54 | 0.57 | 7.0 | 5.5 | 0.0 | 0.0 | 83 | 0.07 | S | P12Hetdex11 | 4 | 0.00 |
| +514938.0 | ±0.4″ | ±0.3″ | ±0.07 | ±0.13 | ±1.1 | ±0.7 | ±1.1 | ±0.7 | ±27 |
Notes. The columns are: source identifier (ID), J2000 right ascension (RA), J2000 declination (Dec), peak brightness (SP), integrated flux density (SI), major axis (Maj), minor axis (Min), deconvolved major axis (DC Maj), deconvolved minor axis (DC Min), position angle (PA), local noise at the source location (RMS), type of source as classified by PYBDSF (Type – here ‘S’ indicates an isolated source fit with a single Gaussian; ‘C’ represents sources fit by a single Gaussian but within an island of emission that contains other sources; and ‘M’ is used for sources that are extended and fitted with multiple Gaussians), the mosaic identifier (Mosaic), the number of pointings that are mosaiced at the position of the source (Number pointings), and the primary beam attenuation weighted average of the deconvolution mask images at the source location (Masked fraction). The errors in the catalogue are the uncertainties obtained from the PYBDSF source fitting. Additional uncertainties on the source extensions, astrometry, flux density scale as well as descriptions of completeness, dynamic range and diffuse emission recovery limitations are described in Sect. 3.
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