Star-Forming Ring Relics in the Centers of Early-Type Galaxies

被引：1
|
作者：
Sil'chenko, Olga [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119991, Russia
来源：
HUNTING FOR THE DARK: THE HIDDEN SIDE OF GALAXY FORMATION | 2010年 / 1240卷
关键词：
LENTICULAR GALAXIES; NGC-7013;
D O I：
10.1063/1.3458505
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
If bars are transient structures then nuclear star-forming rings, which are related to inner Lindblad resonances, are transient too. When star formation consumes all their gas fuel, they must leave low-contrast ring zones of relatively young stars. In early-type galaxies, these relic rings must be embedded into the large bulges and can be found only by mapping mean stellar population ages in the central parts of galaxies. Here I present a few examples of relic rings which were discovered by our team in the course of 2D spectroscopic surveys of nearby early-type disk galaxies.
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收藏
页码：255 / 256
页数：2
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