Table 1
Summary of symbols used to flag different source associations.
| Flag | Meaning |
|---|---|
| 1 | Counterpart within R95 |
| 2 | Counterpart in the range R95 − 6′ |
| s | Only one potential counterpart |
| m | Multiple potential counterparts |
| eR | Counterpart associated using eROSITA |
| ua | Unassociated |
| (i.e., data available, but no counterpart detected) | |
| uo | Unobserved |
Notes. Flags within the same horizontal box are complementary (i.e., a source cannot be flagged 1 and 2 at the same time, but can be flagged, e.g., 1s). However, sources flagged as “ua” or “uo” cannot have any other associated flag. A more in-depth explanation can be found in Sect. 3.
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