Table 4
Basic eRASS1 catalogue properties.
| 1B detection [0.2–2.3 keV] | |||
|---|---|---|---|
| Catalogue | DET_LIKE_0 | EXT_LIKE | # of sources |
| All | ⩾ | ⩾0 | 1277477 |
| Main, PS | ⩾6 | =0 | 903521 |
| Main, Ext. | ⩾5 | >0 | 26682 |
| Supplementary | <6 | =0 | 347274 |
| 3B detection [2.3–5 keV only] | |||
| Catalogue | DET_LIKE_3 | EXT_LIKE | # of sources |
| Hard | ⩾12 | ⩾0 | 5466 |
| Hard, PS | ⩾12 | =0 | 5087 |
| Hard, Ext. | ⩾12 | >0 | 379 |
Notes. ‘PS’ indicates point sources (i.e. those with EXT_LIKE = 0), and ‘Ext.’ indicates extent-selected sources with EXT_LIKE > 0. We note here that there is a slight difference in EXT_LIKE parameter in the 1B and 3B detections, as for the latter all photons in the 0.2–5 keV band are used to evaluate the source extent.
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