Table 2.
Molecular hydrogen emission lines in the apertures in the ILR ring, nucleus, and within-the-ring regions, and derived quantities for hot and cold molecular gas masses.
| Aperture | H2(1–0)S(3) | H2(1–0)S(2) | H2(1–0)S(1) | H2(1–0)S(0) | H2(2–1)S(1) | Hot H2 mass | Cold gas mass |
|---|---|---|---|---|---|---|---|
| λ1.958 μm | λ2.034 μm | λ2.122 μm | λ2.223 μm | λ2.248 μm | [M⊙] | [106 M⊙] | |
| N | 18.97 ± 5.16 | 22.91 ± 5.42 | 22.30 ± 4.72 | 4.36 ± 2.84 | 3.35 ± 1.92 | 25 | 8−40 |
| 1 | 3.25 ± 0.77 | 3.08 ± 0.64 | 6.55 ± 0.49 | 2.65 ± 0.40 | 1.67 ± 0.28 | 7 | 2−12 |
| 2 | 2.51 ± 0.74 | 2.35 ± 0.66 | 4.98 ± 0.62 | 2.14 ± 0.36 | 1.74 ± 0.33 | 6 | 2−9 |
| 3 | 4.52 ± 0.55 | 2.30 ± 0.51 | 5.29 ± 0.41 | 1.83 ± 0.32 | 1.08 ± 0.33 | 6 | 2−10 |
| 4 | 2.94 ± 0.44 | 2.34 ± 0.49 | 4.86 ± 0.37 | 1.74 ± 0.33 | 1.49 ± 0.27 | 5 | 2−9 |
| 5 | 4.76 ± 0.50 | 3.02 ± 0.86 | 4.30 ± 0.44 | 1.74 ± 0.38 | 0.91 ± 0.21 | 5 | 1−8 |
| 6 | 3.43 ± 0.55 | 3.12 ± 0.89 | 3.63 ± 0.50 | 1.36 ± 0.42 | 0.87 ± 0.36 | 4 | 1−7 |
| 7 | 9.52 ± 0.62 | 4.89 ± 0.95 | 8.36 ± 0.42 | 2.78 ± 0.43 | 2.17 ± 0.42 | 9 | 3−15 |
| 8 | 6.76 ± 0.64 | 4.52 ± 0.66 | 9.50 ± 0.53 | 3.05 ± 0.36 | 3.04 ± 0.36 | 11 | 3−17 |
| 9 | 10.67 ± 0.69 | 6.01 ± 0.77 | 12.44 ± 0.37 | 4.43 ± 0.38 | 2.85 ± 0.29 | 14 | 4−22 |
| 10 | 5.99 ± 1.95 | 7.82 ± 2.05 | 7.74 ± 1.69 | – | 1.70 ± 0.75 | 9 | 3−14 |
| 11 | 4.72 ± 1.29 | 5.62 ± 1.51 | 5.48 ± 1.15 | 0.99 ± 0.70 | 1.04 ± 0.56 | 6 | 2−10 |
Notes. The flux units are 10−19 W m−2. Nuclear aperture flux values are not corrected for extinction as their H − K colour might be contaminated by the central source.
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