Open Access
Table A.4
Rosat object type mapping.
| Original code | Unified type | Notes |
|---|---|---|
| QSO | QSO | object with broad lines and MB<−22.5 |
| A | AGN-NL | narrow line objects with [OIII]/Hβ>2.0 and/or [NII]/Hα>0.6 |
| BA | AGN-BL | objects with broad lines and MB>−22.5 |
| H | Starburst | starbursts with [OIII]/H β<2.0 and/or [NII]/H α< 0.6 |
| G | Galaxy | galaxies (objects with no emission lines and Ca II break contrasts > 30%) |
| B | BL Lac | BL Lacs |
| S | Star | |
| Cl | Cluster candidate | possible clusters (based on the proximity of a known cluster) |
| rad | Radio source | Catalogued radio source |
| Sy | Seyfert | |
| Irs | Infrared source | Identified via IR emission |
| Vis | Optical source | Optical/Visible classification |
| UvE | UV-excess source | UV-excess detection |
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