Disk Growth and Quenching
Astrophysics of Galaxies
2020-01-08 v1
Abstract
Based on well established scaling relation for star forming galaxies as a function of redshift, we argue that the implied growth by a large factor of their angular momentum requires that the angular momentum of the inflowing gas fuelling star formation and disk growth must also secularly increase. We then propose that star formation in disks can cease (quench) once the accreted material (mainly atomic hydrogen) comes in with excessive angular momentum for sustaining an adequate radial flow of cold, molecular gas. Existing observational evidence supporting this scenario is mentioned, together with some future observational studies that may validate (or invalidate) it.
Keywords
Cite
@article{arxiv.1910.10446,
title = {Disk Growth and Quenching},
author = {Ying-jie Peng and Alvio Renzini},
journal= {arXiv preprint arXiv:1910.10446},
year = {2020}
}
Comments
Five pages, one figure. Accepted for publication on MNRAS