LARGE-SCALE STRUCTURE OF THE IONIZED-GAS IN THE MAGELLANIC CLOUDS

被引：116

作者：

KENNICUTT, RC

BRESOLIN, F

BOMANS, DJ

BOTHUN, GD

THOMPSON, IB

机构：

[1] STERNWARTE UNIV BONN,D-53121 BONN,GERMANY

[2] UNIV OREGON,DEPT PHYS,EUGENE,OR 97403

[3] CARNEGIE OBSERV,PASADENA,CA 91101

来源：

ASTRONOMICAL JOURNAL | 1995年 / 109卷 / 02期

关键词：

D O I：

10.1086/117304

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Calibrated Hα CCD images taken with the "Parking Lot Camera" are used to investigate the large scale properties of the ionized gas in the Magellanic Clouds. The integrated Hα luminosity, star formation, and the large-scale diffuse emission are studied and compared with other galaxies. The diffuse gas component accounts for 30%-40% of the total Hα emission in both galaxies. The integrated star formation rates and the fraction of diffuse emission are typical for Magellanic irregular galaxies. The Hα maps are used to derive a set of physical parameters for the known supergiant shells in the LMC and SMC. The Hα emission distribution have also been compared to the distribution of H I column density. Evidence for a star formation threshold is discussed.

引用

页码：594 / 604

页数：11

共 67 条

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