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Table 4

Parameters for the two-components model for CO 2–1 emission.

Component 1 (SC) Component 2 (RC)
(RA, Dec)1 0.03′′, –0.03′′ –0.05′′, 0.05′′
(maj, min, PA)2 0.75′′, 0.49′′, 45° 0.75′′, 0.4′′, 45°
Peak3 440 mJy 140 mJy
(Vc, ΔV)4 2090, 160 km s-1 2180, 160 km s-1
M(H2)5 0.6–2.5 × 108M⊙ 1–4.2 × 107M⊙
M(H)6 4.9 ± 2.9 × 105M⊙ 1.2 ± 0.2 × 106M⊙
M(H2) + M(H)7 0.6–2.5 × 108M⊙ 1.1–4.3 × 107M⊙

Notes. The model is described in Sect. 4.1.1, while the mass estimates are discussed in Sect. 4.1.2. The CO 2–1 model and the derived gas masses are discussed in Sects. 4.1.1 and 4.1.3.

(1)

Offsets of the Gaussian component from the phase center.

(2)

Major axis, minor axis and, the position angle of the 2D Gaussian.

(3)

Peak intensity of the CO line.

(4)

Velocity and FWHM of the CO line.

(5)

Molecular mass calculated from the CO intensity (Sect. 4.1.3).

(6)

Atomic mass calculated from the HI opacity (Sect. 4.1.3).

(7)

Total hydrogen mass.

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