Figure 4: The star formation activity parameter αSF versus radius for the nine blue star forming counter rotators.
From: The growth of the central region by acquisition of counterrotating gas in star-forming galaxies

The circles are our data points while the red lines show the median. The grey shaded regions show the ±1σ range of αSF for the central 1kpc of local star forming galaxies with ΔPA<30°. Grey lines mark the median value of ∼0.75.