Table 2.
Breakdown of the blazar source classes during the construction of the BlazEr1 catalog.
| Class | Acronym | NBLAZE | NeRASS1 | Nmatch, 15 | Nmatch, 8 | Nsample | Nnew | Nspec | Nspec, new |
|---|---|---|---|---|---|---|---|---|---|
| BL Lac object | BLL | 1697 | 802 | 682 | 641 | 597 | 90 | 353 | 40 |
| BL Lac candidate | BLLC | 7750 | 3188 | 1269 | 1099 | 954 | 574 | 185 | 85 |
| Galaxy-dominated BL Lac object | BZG | 164 | 59 | 33 | 32 | 28 | 10 | 8 | 1 |
| FSRQ | FSRQ | 1937 | 929 | 844 | 796 | 769 | 252 | 220 | 43 |
| FSRQ candidate | FSRQC | 3444 | 1799 | 1135 | 1011 | 913 | 569 | 109 | 63 |
| Blazar of unknown type | BCU | 2503 | 1241 | 849 | 766 | 712 | 311 | 253 | 86 |
| Blazar candidate of unknown type | BCUC | 82 873 | 33 918 | 3305 | 2507 | 1892 | 1160 | 145 | 73 |
| Total | 100 368 | 41 936 | 8117 | 6852 | 5865 | 2966 | 1273 | 391 | |
Notes. Ntot and NeRASS1: number of sources contained in the BLAZE catalog across the entire sky and in the western Galactic hemisphere, respectively. Nmatch, 15 and Nmatch, 8: Number of eROSITA sources within 15″ and 8″ of a BLAZE catalog source. Nsample: final number of eROSITA counterparts after accounting for the detection likelihood and quality flags. Nnew: Number of sources of each class with no previous exposure time with XMM-Newton, Chandra, ASCA, NuSTAR, Suzaku, Swift-XRT, and ROSAT pointed observations. Nspec: Number of sources with N > 50 counts, for which X-ray spectral analysis is possible. Nspec, new: Number of sources from the spectroscopic subsample without prior X-ray data available.
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