The ACS LCID project: accurate measurements of the full star formation history in low metallicity, isolated, Local Group dwarf galaxies

被引：0
|
作者：
Monelli, Matteo [1 ]
机构：
[1] Inst Astrofis Canarias, Tenerife 38205, Spain
来源：
LOW-METALLICITY STAR FORMATION: FROM THE FIRST STARS TO DWARF GALAXIES | 2008年 / 255期
关键词：
galaxies: evolution; galaxies: dwarf; (galaxies:) Local Group;
D O I：
10.1017/S1743921308025131
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present, here the latest results of the LCID project (Local Cosmology from Isolated Dwarfs), aimed at recovering the full star formation history (SFH) of six isolated dwarf galaxies of the Local Group (LG). Our method of analysis is based on the IAC-pop code, which derives the SFH of a resolved stellar system by comparing the observed and a, model color-magnitude diagram (CMD). We summarize here basic technical issues and the main results concerning our sample of galaxies. We show that LeoA is the only object, showing a clear delay in the onset of the major SF event, while all the other galaxies present a dominant component older than 10 Gyrs.
引用
收藏
页码：392 / 396
页数：5
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