In NGC 628, PNe split into kinematically cold (σz = 8.8 km/s) and warm (26.1 km/s) populations, with cold ones dominating the bright PNLF and yielding a maximal disc where baryons contribute 78% to the rotation curve.
2002), hence m*5007 = 25.3 or m0 = 0.6
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Kinematically cold and warm planetary nebulae samples, HII regions and supernovae remnants in the disc of the face-on spiral galaxy NGC 628 (M74) -- The Planetary Nebulae Spectrograph with the H$\alpha$ arm
In NGC 628, PNe split into kinematically cold (σz = 8.8 km/s) and warm (26.1 km/s) populations, with cold ones dominating the bright PNLF and yielding a maximal disc where baryons contribute 78% to the rotation curve.