THE BULGE OF M33

被引：46

作者：

MINNITI, D

OLSZEWSKI, EW

RIEKE, M

机构：

[1] Steward Observatory, University of Arizona, Tucson

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 410卷 / 02期

关键词：

GALAXIES; STELLAR CONTENT; STRUCTURE; LOCAL GROUP;

D O I：

10.1086/186884

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

H-band imaging of the central region of the Local Group galaxy M33 reveals a bulge with effective radius 0.5 kpc. The brightest bulge stars are resolved. After subtraction of disk contamination, we conclude that the brightest M33 bulge stars are substantially brighter than the brightest stars found in the Milky Way bulge. This fact suggests that the star formation histories of all bulges are not the same; specifically, M33's bulge underwent a star formation episode less than 1 Gyr ago.

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页码：L79 / L82

页数：4

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