Table 5.
ALMA 1.2 mm number counts and overdensity factors in the Spiderweb protocluster field.
| Field 1 | Field 2 | Field 3 | Field 4 | Field 5 | Field 6 | Total | |
|---|---|---|---|---|---|---|---|
| S [mJy] | dN/dS [103 mJy−1deg−2] | ||||||
| 0.20 − 0.31 | 108.27 ± 88.26 | 41.34 ± 30.67 | 32.81 ± 18.10 | 11.33 ± 4.31 | 20.11 ± 8.39 | 10.52 ± 3.79 | 66.73 ± 66.73 |
| 0.31 − 0.50 | 13.24 ± 7.22 | 43.96 ± 20.69 | 37.14 ± 20.03 | 6.72 ± 2.36 | 10.58 ± 4.18 | 10.20 ± 4.72 | 14.00 ± 14.00 |
| 0.50 − 0.80 | 11.58 ± 2.36 | 9.76 ± 6.14 | 21.90 ± 14.25 | 6.43 ± 2.04 | 4.61 ± 1.74 | 6.79 ± 2.69 | 9.10 ± 9.10 |
| 0.80 − 1.27 | 2.31 ± 0.67 | 2.08 ± 0.36 | 3.20 ± 1.43 | 2.86 ± 1.00 | 2.02 ± 0.00 | 2.53 ± 0.89 | 2.33 ± 2.33 |
| 1.27 − 2.02 | 3.19 ± 0.64 | 1.27 ± 0.00 | 1.27 ± 0.00 | 1.27 ± 0.00 | − | − | 0.77 ± 0.77 |
| S [mJy] | N(> S) [103 deg−2] | ||||||
| 0.25 | 11.93 ± 3.73 | 14.95 ± 2.42 | 15.20 ± 1.66 | 4.69 ± 0.49 | 4.54 ± 0.99 | 5.21 ± 0.50 | 9.38 ± 2.21 |
| 0.40 | 7.25 ± 0.72 | 7.13 ± 3.60 | 11.23 ± 3.29 | 3.82 ± 0.20 | 2.33 ± 0.70 | 3.66 ± 0.69 | 5.44 ± 0.40 |
| 0.65 | 4.91 ± 0.81 | 1.85 ± 0.68 | 2.96 ± 1.85 | 2.06 ± 0.39 | 1.09 ± 0.34 | 1.98 ± 0.59 | 2.82 ± 0.31 |
| 1.05 | 2.86 ± 0.00 | 0.95 ± 0.00 | 0.96 ± 0.01 | 0.95 ± 0.04 | − | 0.95 ± 0.00 | 0.99 ± 0.09 |
| 1.69 | 1.81 ± 0.29 | − | − | − | − | − | 0.35 ± 0.06 |
| S [mJy] | ALMA overdensity | ||||||
| 0.25 | 2.25 ± 0.74 | 2.82 ± 0.54 | 2.87 ± 0.42 | 0.88 ± 0.13 | 0.86 ± 0.21 | 0.98 ± 0.14 | 1.77 ± 0.45 |
| 0.40 | 2.13 ± 0.30 | 2.09 ± 1.08 | 3.29 ± 1.02 | 1.12 ± 0.13 | 0.68 ± 0.22 | 1.07 ± 0.23 | 1.59 ± 0.20 |
| 0.65 | 2.76 ± 0.56 | 1.04 ± 0.40 | 1.66 ± 1.06 | 1.16 ± 0.26 | 0.61 ± 0.20 | 1.11 ± 0.36 | 1.58 ± 0.26 |
| 1.05 | 3.21 ± 0.47 | 1.07 ± 0.16 | 1.07 ± 0.16 | 1.07 ± 0.16 | − | 1.07 ± 0.16 | 1.11 ± 0.19 |
| 1.69 | 4.63 ± 1.20 | − | − | − | − | − | 0.90 ± 0.24 |
| U18 field | 2.64 ± 0.83 | 3.31 ± 0.53 | 3.36 ± 0.37 | 1.04 ± 0.11 | 1.00 ± 0.22 | 1.15 ± 0.11 | 2.08 ± 0.49 |
| ALMA overdensity around the SW galaxy | |||||||
| Radii (kpc) | < 150 | 150 − 300 | 300 − 450 | 450 − 600 | 600 − 750 | 750 − 900 | 900 − 1050 |
| Factor | 3.5 | 2.4 | 2.8 | 4.0 | 1.6 | 1.3 | 1.4 |
Notes. The overdensity in each field at each flux bin was calculated based on the field results from Chen et al. (2023b) and Gómez-Guijarro et al. (2022). The overdensity results with the name “U18 field” were calculated based on the field results from Umehata et al. (2018).
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