THE OB-ASSOCIATION LH-58 IN THE LARGE MAGELLANIC CLOUD

被引：39
|
作者：
GARMANY, CD
MASSEY, P
PARKER, JW
机构：
[1] NATL OPT ASTRON OBSERV,KITT PEAK NATL OBSERV,TUCSON,AZ 85726
[2] NASA,GODDARD SPACE FLIGHT CTR,ASTROPHYS & SPACE ASTRON LAB,GREENBELT,MD 20771
来源：
ASTRONOMICAL JOURNAL | 1994年 / 108卷 / 04期
关键词：
D O I：
10.1086/117151
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present CCD photometry and spectroscopy for stars in Lucke-Hodge 58, an isolated OB association in the Large Magellanic Cloud (LMC) northwest of 30 Doradus. The photometric catalog contains 839 stars with UBV magnitudes complete to V approximate to 19. We have obtained spectra and classified 35 stars; combined with previous published spectral types, we find 22 O-type stars. The earliest type is 03-4 V, and there are three WR stars in the association. The slope of the initial mass function, Gamma=-1.7+/-0.3, is in good agreement with other LMC associations. The presence of several evolved supergiants with masses about 15-25.M(circle dot) suggests that some star formation took place as early as 10 million years ago, but the majority of stars formed coevally within the past few million years.
引用
收藏
页码：1256 / 1265
页数：10
相关论文
共 50 条
12345