The stellar oxygen abundance gradient in M33

被引：30

作者：

Monteverde, MI

Herrero, A

Lennon, DJ

Kudritzki, RP

机构：

[1] UNIV STERNWARTE,D-81679 MUNICH,GERMANY

[2] MAX PLANCK INST ASTROPHYS,D-85740 GARCHING,GERMANY

来源：

ASTROPHYSICAL JOURNAL | 1997年 / 474卷 / 02期

关键词：

galaxies; abundances; individual; (M33); stars; early-type; supergiants;

D O I：

10.1086/310441

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report here first results concerning stellar oxygen abundances in M33. Non-LTE model atmosphere and non-LTE line formation calculations were used to determine the oxygen abundance of B-type supergiants. By choosing stars located at different projected radial distances to the center of M33, we are able to determine the oxygen abundance gradient, for which we obtain a value of -0.16 +/- 0.06 dex kpc(-1). This is the first time that the oxygen stellar abundance gradient has been determined in a spiral galaxy other than the Milky Way.

引用

页码：L107 / L110

页数：4

共 19 条

[1] ABUNDANCES OF THE ELEMENTS - METEORITIC AND SOLAR [J].