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.

引用

页码：409 / 412

页数：3