Fig. 1.

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NGC1433 data and derived maps: The top two images are the colour composites of NGC 1433 from the Carnegie-Irvine Galaxy Survey (top left; Ho et al. 2011) and TIMER (top right; Gadotti et al. 2019). Below are maps that show (from left to right and top to bottom) the stellar kinematics and population properties derived from the TIMER data using GIST: stellar velocity, velocity dispersion, h3, h4, age, metallicity, and α enhancement. The ND radius is shown with a solid black contour and displays a faster rotation, a drop in velocity dispersion, an anti-correlation between velocity and h3, and an increase in h4. In addition, the same region corresponds to a drop in mean age and α enhancement and an increase in metallicity. It is clear that NGC 1433 hosts a younger ND with more rotational support in the central region than the underlying population, in agreement with Gadotti et al. (2020) and Bittner et al. (2020).
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