THE H-II REGIONS OF SEXTANS-A

被引：22

作者：

HODGE, P ^{[1
]}

KENNICUTT, RC ^{[1
]}

STROBEL, N ^{[1
]}

机构：

[1] UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 1994年 / 106卷 / 701期

关键词：

D O I：

10.1086/133440

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Calibrated Ha and continuum CCD frames are used to measure the emission-line luminosities, sizes, and morphological characteristics of 25 H II regions in the dwarf irregular galaxy Sextans A, a probable member of the Local Group. The luminosity function fits a power law with slope -1.70 and the size distribution is roughly exponential with a scale length of 62 pc. We identify 56 candidate exciting stars, from which we find that the estimated ultraviolet flux in the H II regions is approximately proportional to the Halpha flux. Comparison with the H I distribution shows good positional agreement, except with an approximate 300 pc offset of Ha peak from H I peak.

引用

页码：765 / 769

页数：5

共 25 条

[1]

APARICIO A, 1987, ASTRON ASTROPHYS SUP, V71, P297

[2]

COLLIER J, 1994, IN PRESS AP J

[3]

COLLIER J, 1992, BAAS, V24, P1201

[4] SEQUENTIAL FORMATION OF SUBGROUPS IN OB ASSOCIATIONS [J].