Table 2
Parameters of the CO(2−1) profiles derived using Gaussian fits, derived molecular masses, and ratios of molecular to atomic mass for the five positions.
| Position | Peak | Velocity | Dispersion | Integrated flux | H2 mass | H2/H i | |||||||
| (mK) | (km s-1) | (km s-1) | (mK km s-1) | (M⊙) | |||||||||
|
|
|||||||||||||
| F2 | 22.3 ± 1.7 | 346.7 ± 1.5 | 18.0 ± 1.5 | 1007.7 ± 114.1 | 9.5 × 105 | >4.8 | |||||||
| F3 | 17.0 ± 1.0 | 332.1 ± 0.6 | 8.8 ± 0.6 | 374.2 ± 31.9 | 3.5 × 105 | 0.4 | |||||||
| F4 | 8.7 ± 0.8 | 322.7 ± 1.0 | 9.7 ± 1.0 | 210.7 ± 28.8 | 2.0 × 105 | 0.2 | |||||||
| F5 | 39.8 ± 3.0 | 340.1 ± 0.8 | 9.3 ± 0.8 | 932.3 ± 108.8 | 8.8 × 105 | > 4.4 | |||||||
| F6 | 15.0 ± 1.1 | 335.4 ± 2.6 | 30.8 ± 2.6 | 1154.7 ± 131.0 | 10.9 × 105 | > 5.4 | |||||||
| F6-1 | 19.0 ± 1.2 | 316.8 ± 1.1 | 11.0 ± 1.0 | 523.6 ± 58.1 | 4.9 × 105 | ||||||||
| F6-2 | 12.3 ± 0.9 | 359.6 ± 2.3 | 18.7 ± 2.4 | 577.6 ± 84.0 | 5.5 × 105 | ||||||||
Notes. For position F6 the results of a two-Gaussian fit are also given and are labelled F6-1 and F6-2. The molecular masses have been estimated using CO(2−1)/CO(1−0) = 0.55 (Charmandaris et al. 2000) and a conversion factor of αCO = 1.5M⊙ (K km s-1 pc2)-1. H i masses are derived from the data presented in Oosterloo & Morganti (2005) using the same aperture as the APEX beam.
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