Properties of galactic outflows: Measurements of the feedback from star formation

被引：355

作者：

Martin, CL ^{[1
]}

机构：

[1] Space Telescope Sci Inst, Baltimore, MD 21218 USA

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 513卷 / 01期

关键词：

galaxies : dwarf; galaxies : evolution; galaxies : ISM; galaxies : kinematics and dynamics; X-rays : galaxies;

D O I：

10.1086/306863

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Properties of starburst-driven outflows in dwarf galaxies are compared with those in more massive galaxies. Over a factor of similar to 10 in galactic rotation speed, supershells are shown to Lift warm ionized gas out of the disk at rates up to several times the star formation rate. The amount of mass escaping the galactic potential, in contrast to the disk, does depend on the galactic mass. The temperature of the hottest extended X-ray emission shows little variation around similar to 10(6.7) K, and this gas has enough energy to escape from the galaxies with rotation speed less than approximately 130(-40)(+20) km s(-1).

引用

页码：156 / 160

页数：5

共 42 条

[1] The hot gas surrounding the edge-on galaxy NGC 891 [J].