Table 2.
Properties (mean values with standard errors of the mean) of galaxies (SDSS spectral class = GALAXY) from the PSS-CSO and the ECS samples.
| PSS-CSO sample | ECS sample | |
|---|---|---|
| log [O III]/Hβ(a) | 0.32 ± 0.06 (29) | 0.41 ± 0.08 (19) |
| log [N II]/Hα(a) | 0.10 ± 0.03 (29) | −0.05 ± 0.04 (32) |
| NHERG/NLERG(a) | 0.17 ± 0.12 (27) | 0.50 ± 0.35 (19) |
| EW([O II]) (Å) (b) | −27.4 ± 2.7 (51) | −12.1 ± 2.1 (29) |
| EW(Hβ) (Å) (b) | −2.9 ± 0.4 (35) | −2.6 ± 0.7 (23) |
| EW([O III]) (Å) (b) | −8.9 ± 1.3 (49) | −11.1 ± 0.4 (29) |
| log [O III]/Hβ(b) | 0.41 ± 0.06 (38) | 0.5 ± 0.1 (23) |
| σ[O III] (km s−1)(b) | 259 ± 16 (50) | 208 ± 15 (38) |
| D4000n (b) | 1.70 ± 0.04 (41) | 1.88 ± 0.02 (41) |
| log ℳ*/ℳ⊙(c) | 11.28 ± 0.06 (19) | 11.23 ± 0.06 (27) |
| log SFR (ℳ⊙ yr−1) (c) | −1.64 ± 0.45 (19) | −2.08 ± 0.36 (27) |
| log sSFR (Gyr−1) (c) | −3.92 ± 0.49 (19) | −4.32 ± 0.38 (27) |
| Merger fraction fm(d) | 0.61 ± 0.07 (43) | 0.15 ± 0.06 (41) |
Notes. The upper index in the first column refers to the selection criteria for the corresponding subsamples:
data from Chang et al. (2015) with flag = 1;
The number of objects used for the statistics is given in brackets.
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