Kinematics of gas and stars in gas-rich early-type galaxies

被引：0
|
作者：
N. Caon
M. Pastoriza
D. Macchetto
机构：
[1] Instituto de Astrofisica de Canarias,
[2] Instituto de Física,undefined
[3] UFRGS,undefined
[4] Space Telescope Science Intitute,undefined
来源：
Astrophysics and Space Science | 2001年 / 277卷
关键词：
galaxies: kinematics and dynamics; galaxies: ISM; galaxies: elliptical and lenticular; cD;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We present gaseous and stellar kinematics for 14 gas-rich early-type galaxies. Half of the galaxies show irregular gaseous velocity profiles, with gas/star counter-rotation in 5 galaxies. We also find 5 counter-rotating stellar cores, and 5 more galaxies display stellar nuclei kinematically decoupled from the main stellar body. Our results indicate that the ionized gas is of external origin, and may have been acquired recently; the merging or accretion events that brought the gas into the galaxy have likely affected its stellar kinematics.
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页码：409 / 412
页数：3
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