Table 5.
Kinematics and morphology of the kinematically-defined components of the ionised gas.
| Component | Typical V | Typical σ | Morphology |
|---|---|---|---|
| (km s−1) | (km s−1) | ||
| Disc | −60 ≲ V ≲ 60 | σ ≲ 100 | Butterfly pattern. The central 1″ is blueshifted with respect to the systemic velocity of the galaxy as deduced from the kinematics at larger radii. |
| Blueshifted narrow | −200 ≲ V ≲ −50 | 50 ≲ σ ≲ 200 | Runs from the galactic nucleus towards the north-west to the edge of the field of view at ∼3″ (∼900 pc). |
| Zero-velocity narrow | −100 ≲ V ≲ 0 | 100 ≲ σ ≲ 250 | A patch of this component seems to correlate with the north-eastern spiral arm. The other patches correlate with the UCNR. |
| Crescent narrow | 0 ≲ V ≲ 300 | 100 ≲ σ ≲ 250 | Redshifted component with an inward-pointing crescent shape  (∼200 pc) west of the nucleus. |
| Redshifted narrow 1 | 100 ≲ V ≲ 300 | 50 ≲ σ ≲ 200 | Found up to ∼1″ (∼300 pc) north and south of the nucleus. |
| Redshifted narrow 2 | 500 ≲ V ≲ 800 | σ ≲ 200 | Found up to ∼1″ (∼300 pc) north and south of the nucleus. |
| Blueshifted broad | −600 ≲ V ≲ −100 | 250 ≲ σ ≲ 500 | Centred in the nucleus and elongated in the south-east to north-west direction with a width of 3″ − 4″ (900 pc–1200 pc). |
| Zero-velocity broad | −200 ≲ V ≲ 200 | 250 ≲ σ ≲ 600 | Found around the nucleus with an extension towards the south. |
| Redshifted broad | 800 ≲ V ≲ 1300 | 200 ≲ σ ≲ 500 | Found south of the nucleus in a blob  (∼150 pc) across. |
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