Frontiers in Astronomy and Space Sciences | |
Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxiesâ2. Importance of AGN Feedback Suggested by Stellar AgeâVelocity Dispersion Relation | |
Shirakata, Hikari1  Okamoto, Takashi1  Kawaguchi, Toshihiro2  Ishiyama, Tomoaki3  | |
[1] Department of Cosmosciences, Graduate School of Science, Hokkaido University, Sapporo, Japan;Department of Economics, Management and Information Science, Onomichi City University, Onomichi, Hiroshima, Japan;Institute of Management and Information Technologies, Chiba University, Chiba, Japan | |
关键词: Active Galactic Nuclei (AGN); galaxy formation; Galaxy evolution; statistics; galaxy age; | |
DOI : 10.3389/fspas.2017.00013 | |
学科分类:空间科学 | |
来源: Frontiers | |
【 摘 要 】
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 \textcolor{red}{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 obtained from Martin-Navarro et al. (2016). \textcolor{red}{We tested the model with weak AGN feedback and find that galaxies with larger velocity dispersion have a younger stellar age.}.
【 授权许可】
CC BY
【 预 览 】
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RO201904024810438ZK.pdf | 1180KB | download |