Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies–2. Importance of AGN Feedback Suggested by Stellar Age–Velocity Dispersion Relation

Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto, Tomoaki Ishiyama
2017 Frontiers in Astronomy and Space Sciences  
We present the galactic stellar age-velocity dispersion relation obtained from a semi-analytic model of galaxy formation. We divide galaxies into two populations: galaxies which have over-massive/under-massive black holes (BHs) against the best-fitting BH mass-velocity dispersion relation. We find that galaxies with larger velocity dispersion have older stellar ages. We also find that galaxies with over-massive BHs have older stellar ages. These results are consistent with observational results
more » ... servational results obtained from Martín-Navarro et al. (2016) . We tested the model with weak AGN feedback and find that galaxies with larger velocity dispersion have a younger stellar age.
doi:10.3389/fspas.2017.00013 fatcat:ddlnrkib3jdotlc4zlw7sbcslm