Table 2
Statistics on the SDSS DR7 sample and our optical-radio sample including the number of different objects placed in the AGN, composite, or SF region (left plots, Fig. 1), or Seyfert, LINER, or SF region (middle and right plots) of the diagnostic diagrams.
| Diagram | Spectral type | SDSS DR7 | Cross-match |
|
|
|||
| AGNs | 11 756 ± 108 (14.8%) | 2968 ± 54 (31.5%) | |
| [Nii] | Composites | 13 856 ± 118 (17.5%) | 3021 ± 55 (32.1%) |
| SFGs | 53 623 ± 232 (67.7%) | 3419 ± 58 (36.3%) | |
|
|
|||
| Seyferts | 7646 ± 87 (9.6%) | 1747 ± 42 (18.6%) | |
| [Sii] | LINERs | 4107 ± 64 (5.2%) | 1012 ± 32 (10.8%) |
| SFGs | 67 482 ± 260 (85.2%) | 6649 ± 81 (70.7%) | |
|
|
|||
| Seyferts | 10 269 ± 101 (13.0%) | 2180 ± 47 (23.2%) | |
| [Oi] | LINERs | 6543 ± 81 (8.3%) | 1500 ± 39 (15.9%) |
| SFGs | 62 423 ± 250 (78.8%) | 5728 ± 76 (60.9%) | |
Notes. The relative fraction of different spectral types is reported in parenthesis.
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