Table 2
Best-fit parameters of the IR LFs.
| Redshift | log (Φ ∗) | α | log (L∗) |
|
|
|||
| IR LFs of the groups in our sample | |||
|
|
|||
| Schechter function | |||
| 0.1 <z< 0.4 | 1.4 ± 0.05 | –1.19 ± 0.16 | 10.24 ± 0.02 |
| 0.4 <z< 0.8 | 2.54 ± 0.15 | –1.2 | 11.36 ± 0.05 |
| 0.8 <z< 1.2 | 3.29 ± 0.17 | –1.2 | 12.1 ± 0.14 |
| z ~ 1.6 | 3.93 ± 0.5 | –1.2 | 12.34 ± 0.31 |
|
|
|||
| Modified Schechter function | |||
| redshift | log (Φ ∗) | α | log (L∗) |
| 0.1 <z< 0.4 | 1.27 ± 0.04 | –1.2 ± 0.21 | 9.57 ± 0.01 |
| 0.4 <z< 0.8 | 1.15 ± 0.16 | –1.2 | 10.73 ± 0.04 |
| 0.8 <z< 1.2 | 1.3 ± 0.16 | –1.2 | 11.46 ± 0.13 |
| z ~ 1.6 | 1.82 ± 0.73 | –1.2 | 11.65 ± 0.22 |
| IR LFs of the groups of Guo et al. (2014) | |||
|
|
|||
| Schechter function | |||
| 0 <z< 0.1 | 0.57 ± 0.05 | –1.17 ± 0.02 | 10.32 ± 0.005 |
| 0.1 <z< 0.2 | 0.74 ± 0.08 | –1.2 | 10.43 ± 0.08 |
| 0.2 <z< 0.3 | 0.84 ± 0.09 | –1.2 | 10.72 ± 0.11 |
| 0.3 <z< 0.4 | 1.13 ± 0.11 | –1.2 | 10.89 ± 0.15 |
|
|
|||
| Modified Schechter function | |||
| 0 <z< 0.1 | 0.37 ± 0.03 | –1.2 ± 0.02 | 9.64 ± 0.003 |
| 0.1 <z< 0.2 | 0.75 ± 0.08 | –1.2 | 9.50 ± 0.04 |
| 0.2 <z< 0.3 | 0.77 ± 0.09 | –1.2 | 9.72 ± 0.12 |
| 0.3 <z< 0.4 | 0.81 ± 0.15 | –1.2 | 9.97 ± 0.17 |
|
|
|||
| IR LFs of clusters | |||
|
|
|||
| Schechter function | |||
| z ~ 0.05 | 2.11 ± 0.04 | –1.2 | 10.53 ± 0.15 |
| 0.15 <z< 0.3 | 2.79 ± 0.05 | –1.2 | 10.84 ± 0.17 |
| 0.6 <z< 0.8 | 2.97 ± 0.08 | –1.2 | 11.34 ± 0.11 |
|
|
|||
| Modified Schechter function | |||
| z ~ 0.05 | 1.93 ± 0.04 | –1.2 | 9.74 ± 0.15 |
| 0.15 <z< 0.3 | 2.31 ± 0.04 | –1.2 | 9.99 ± 0.18 |
| 0.6 <z< 0.8 | 1.6 ± 0.08 | –1.2 | 10.90 ± 0.09 |
Notes. Best-fit parameters of the Schechter function and of the modified Schechter function of Saunders et al. (1990) for the composite IR LF of our group sample, the local mean IR LF derived from the work of Guo et al. (2014), and for the cluster IR LF of Haines et al. (2013), respectively.
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