Table 2
Far-IR and (sub)mm properties of GN20, GN20.2a and GN20.2b.
| Source | S 100 μm | S 160 μm | S 250 μm a | S 1.2 mm | S 2.2 mm | S 3.3 mm | S 1.4 GHz b | log Mdust | ⟨ U ⟩ | log LIR | SFR IR |
| (mJy) | (mJy) | (mJy) | (mJy) | (mJy) | (mJy) | (μJy) | (M⊙) | (L⊙) | (M⊙ yr-1) | ||
|
|
|||||||||||
| GN20c | 0.70 ± 0.42 | 5.45 ± 1.02 | 18.66 ± 2.70 | 8.47 ± 0.79 | 0.95 ± 0.14 | 0.229 ± 0.036 | 66.4 ± 6.6 | 9.72 |
27.2 |
13.27 |
1860 ± 90 |
| GN20.2a | 0.12 ± 0.44 | 1.24 ± 1.38 | ... | 3.83 ± 0.48 | 0.52 ± 0.23 | 0.177 ± 0.071 | 138.5 ± 3.5 | 9.39 |
26.4 |
12.90 |
800 ± 70 |
| GN20.2b | 0.61 ± 0.46 | 2.25 ± 1.48 | ... | 3.25 ± 0.52 | 0.25 ± 0.16 | 0.114 ± 0.035 | 14.2 ± 4.1 | 9.32 |
25.8 |
12.84 |
690 ± 100 |
Notes.
The SPIRE 250 μm detections for GN20.2a and GN20.2b are blended, due to the small separation (~6.8′′) between these two galaxies.
JVLA 1.4 GHz flux density from new deep radio measurements (Owen et al., in prep.). For GN20.2b, we list flux density derived from a circular Gaussian fit with fixed FWHM of 0.88′′. The peak flux density measurement is 12.5 ± 3.5μJy.
GN20 also has secure detections in SPIRE 350 and 500 μm bands (Magdis et al. 2011) and in the SCUBA 850 μm band (Pope et al. 2006; Daddi et al. 2009b).
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