AN H-I SUPERBUBBLE IN THE SPIRAL GALAXY M-101

被引：0

作者：

KAMPHUIS, J

SANCISI, R

VANDERHULST, T

机构：

来源：

ASTRONOMY & ASTROPHYSICS | 1991年 / 244卷 / 01期

关键词：

GALAXIES; INDIVIDUAL; M101; INTERSTELLAIR MEDIUM; BUBBLES; HII REGIONS; NGC; 5462; RADIO LINES; 21-CM;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A remarkable HI superbubble, 1.5 kpc in size with a mass of 3 10(7) M., an expansion velocity of 50 km sec-1 and probably accelerating into the halo, has been found in the nearby spiral galaxy M 101. This is the first clear case of an expanding HI shell associated with a hole in the HI layer. It indicates, beyond any doubt, that this hole is related to energetic phenomena in the disk of the galaxy. The kinetic energy of the HI shell is a few 10(53) erg, which is the equivalent of at least one thousand supernovae.

引用

页码：L29 / L32

页数：4

共 22 条

[1]

Allen R. J., 1979, Astronomy and Astrophysics Supplement Series, V36, P135

[2]

ALLEN RJ, 1973, ASTRON ASTROPHYS, V29, P447

[3]

BRAUN R, 1991, IAU S, V144

[4]

BRINKS E, 1986, ASTRON ASTROPHYS, V169, P14