Table 6.
Median values of the distributions of Dn(4000) parameter for all the galaxies in this study.
| (1) | (2) | (3) | (4) | (5) |
|---|---|---|---|---|
| Sample | Sub | All | Young | Old |
| SDSS | – | 1.65 ± 0.32 | 1.34 ± 0.21 | 1.88 ± 0.13 |
| 51.3% | 48.7% | |||
| SIG | – | 1.59 ± 0.27 | 1.40 ± 0.16 | 1.86 ± 0.10 |
| 57.8% | 42.2% | |||
| SIP | – | 1.42 ± 0.30 | 1.29 ± 0.18 | 1.87 ± 0.10 |
| 69.1% | 30.9% | |||
| c | 1.65 ± 0.28 | 1.36 ± 0.18 | 1.88 ± 0.10 | |
| 51.8% | 48.2% | |||
| s | 1.28 ± 0.25 | 1.25 ± 0.16 | 1.81 ± 0.09 | |
| 85.8% | 14.2% | |||
| SIT | – | 1.41 ± 0.30 | 1.28 ± 0.16 | 1.86 ± 0.12 |
| 67.7% | 32.3% | |||
| c | 1.75 ± 0.28 | 1.37 ± 0.17 | 1.87 ± 0.10 | |
| 42.4% | 57.6% | |||
| s | 1.32 ± 0.27 | 1.28 ± 0.16 | 1.86 ± 0.12 | |
| 79.7% | 20.3% | |||
Notes. Median and standard deviation of the distribution of the Dn(4000) parameter for all the galaxies in the samples (SF, composite, and AGN), subsamples (centrals: c, and satellites: s), and divided into young (Dn(4000) ≤ 1.67) and old (Dn(4000) > 1.67) galaxies. The second rows correspond to the fraction of young (fyoung) and old (fold) galaxies in each sample, respectively, thus for the same sample fyoung + fold = 100.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.