AN UPPER LIMIT ON THE H-I CONTENT OF THE CARINA DWARF SPHEROIDAL GALAXY

被引：23

作者：

MOULD, JR

BOTHUN, GD

HALL, PJ

STAVELEYSMITH, L

WRIGHT, AE

机构：

[1] UNIV MICHIGAN,ANN ARBOR,MI 48109

[2] AUSTRALIA TELESCOPE NATL FACIL,PARKES,NSW 2121,AUSTRALIA

来源：

ASTROPHYSICAL JOURNAL | 1990年 / 362卷 / 02期

关键词：

Galaxies: interstellar matter; Stars: winds;

D O I：

10.1086/185846

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Neutral hydrogen 21 cm measurements of the Carina dwarf spheroidal galaxy yield an upper limint on its H I content of ∼103 M⊙. For (M/L) ∼ 30, this translates into an upper limit of 10-4 on its fractional H I content. It is possible that Carina has efficiently cleansed itself of gas because red giant wind velocities are of the order of the escape velocity. It is then interesting to ask how Carina retained its gas for the first few billion years of its existence.

引用

页码：L55 / L57

页数：3

共 21 条

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AARONSON M, 1985, STAR FORMING DWARF G, P125

[2]

AARONSON M, 1986, SPACE TELESCOPE SCI, V1, P45

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