| Activity Type: | USS |
|---|---|
| Description: | ultra-steep-spectrum radio source |
| Exact Classifications Count: | 2219 |
| Associated Data Count: | 2219 entries for 2189 objects (retrieve objects) |
| Associated Reference Codes: | 1992A&AS...93..399W 1994A&AS..108...79R 2000A&AS..143..303D 2004MNRAS.355...20J 2007MNRAS.378..551B 2007MNRAS.381..341B |