Displacement of X-ray sources from star clusters in starburst galaxies

被引：73
作者：
Kaaret, P
Alonso-Herrero, A
Gallagher, JS
Fabbiano, G
Zezas, A
Rieke, MJ
机构：
[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
[2] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
[3] Consejo Super Invest Cient, IEM, Dept Astrofis Mol & Infrarroja, Madrid 28006, Spain
[4] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2004年 / 348卷 / 02期
关键词：
galaxies : individual : M82; galaxies : individual : NGC 1569; galaxies : individual : NGC 5253; galaxies : starburst; galaxies : stellar content; X-rays : galaxies;
D O I：
10.1111/j.1365-2966.2004.07516.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We examine the spatial offsets between X-ray point sources and star clusters in three starburst galaxies. We find that the X-ray sources are preferentially located near the star clusters. Because the star clusters are very good tracers of the star formation activity in the galaxies, this indicates that the X-ray sources are young objects associated with current star formation. We find significant displacements of the X-ray sources from the clusters. These displacements are likely due to motion of the X-ray sources and indicates that they are X-ray binaries. We find that brighter X-ray sources preferentially occur closer to clusters. The absence of very bright sources at large displacements from clusters may help constrain models of the sources.
引用
收藏
页码：L28 / +
页数：6
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