On the evolution of the SFR in galactic disks

被引：0

作者：

Sakhibov, F ^{[1
]}

Smirnov, MA

机构：

[1] Tajik Acad Sci, Inst Astrophys, Dushanbe, Tajikistan

[2] Russian Acad Sci, Inst Astron, Moscow V71, Russia

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2003年 / 284卷 / 02期

关键词：

galaxies : general; galaxies : evolution; galaxies : stellar content; star formation;

D O I：

10.1023/A:1024036230729

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A simple semi-empirical model of the evolution of observed ring-shaped radial distributions of SFR surface density in galaxies NGC 628 and NGC 6946 provides us with exponential stellar disks with cooresponding scale length of the surface brightness radial distributions and constraints for the some nonobservable parameters: characteristic SFR decreasing time scale, characteristic collapse time scale, etc.

引用

页码：731 / 734

页数：4

共 6 条

[1] THE ABUNDANCE GRADIENTS ACROSS THE SPIRAL GALAXIES NGC-628 AND NGC-6946 [J].