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Table 1
Division of the XSS sample into source types.
| Source type | All | Hard+soft | Hard-only |
|
|
|||
| AGN | 181 | 160 | 21 |
| Galaxies | 38 | 16 | 22 |
| Clusters | 10 | 10 | 0 |
| Stars | 53 | 51 | 2 |
| Other | 27 | 17 | 10 |
| Unidentified | 178 | 0 | 178¶ |
|
|
|||
| Total | 487 | 254 | 233 |
Notes. ¶This includes the 68 hard-only sources with 
′′ which were not formally included in the identification process.
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