On the formation of massive quiescent galaxies with diverse morphologies in the TNG50 simulation
- Park, Minjung
- Tacchella, Sandro
- Nelson, Erica J.
- Hernquist, Lars
- Weinberger, Rainer
- Diemer, Benedikt
- Nelson, Dylan
- Pillepich, Annalisa
- Marinacci, Federico
- Vogelsberger, Mark
DOIAbstract
Observations have shown that the star-formation activity and the morphology of galaxies are closely related, but the underlying physical connection is not well understood. Using the TNG50 simulation, we explore the quenching and the morphological evolution of the 102 massive quiescent galaxies in the mass range of $10.5<\log(M_{\rm stellar}/M_{\odot})<11.5$ selected at $z=0$. The morphology of galaxies is quantified based on their kinematics, and we measure the quenching timescale of individual galaxies directly from star formation history. We show that galaxies tend to be quenched more rapidly if they: (i) are satellites in massive halos, (ii) have lower star-forming gas fractions, or (iii) inject a larger amount of black hole kinetic feed...
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