Feedback, disk self-regulation, and galaxy formation

被引：272

作者：

Silk, J

机构：

[1] UNIV CALIF BERKELEY, DEPT PHYS, BERKELEY, CA 94720 USA

[2] UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

来源：

ASTROPHYSICAL JOURNAL | 1997年 / 481卷 / 02期

关键词：

galaxies; formation; ISM; kinematics and dynamics; stellar content;

D O I：

10.1086/304073

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Self-regulation of star formation in disks is controlled by two dimensionless parameters: the Toomre parameter for gravitational instability and the porosity of the interstellar medium to supernova remnant-heated gas. An interplay between these leads to expressions for the gas velocity dispersion, gas fraction, star formation rate and star formation efficiency in disks and to a possible explanation of the Tully-Fisher relation. I further develop feedback arguments that arise from the impact of massive star formation and death on protogalaxies in order to account for the characteristic luminosity of a galaxy and for early winds from forming spheroids.

引用

页码：703 / 709

页数：7

共 43 条

[1] SPECTRAL EVOLUTION OF STELLAR POPULATIONS USING ISOCHRONE SYNTHESIS [J].