Galaxy quenching time-scales from a forensic reconstruction of their colour evolution

The timescales on which galaxies move out of the blue cloud to red sequence ($\tau^{}_\mathrm{Q}$) provide insight into mechanisms driving quenching. Here, we build upon previous work, where showcased a method reconstruct colour evolution observed low-redshift from Galaxy And Mass Assembly (GAMA) survey based spectral energy distribution (SED) fitting with ProSpect, together statistically-driven definition for and populations. We also use predicted SHARK semi-analytic model, combined SED fits our simulated galaxy sample, study accuracy measured $\tau^{}_\mathrm{Q}$ gain physical galaxies. In this measure in consistent approach both observations simulations. After accounting selection bias, find evidence an increase GAMA as function cosmic time (from $\tau^{}_\mathrm{Q}\sim1$ Gyr $\tau^{}_\mathrm{Q}\sim2$ lapse $\sim4$ Gyr), but not ($\tau^{}_\mathrm{Q}\lesssim1$ Gyr). Our simulations disagree effect stellar mass, showing massive transitioning faster, is opposite SHARK. that environment only impacts below $\sim10^{10}$ M$_\odot$ GAMA, satellites having shorter than centrals by $\sim0.4$ Gyr, qualitative agreement. Finally, compare literature, finding consistency order couple several differences discuss.