Chemical enrichment of the complex hot ISM of the Antennae galaxies. I. Spatial and spectral analysis of the diffuse X-ray emission

被引：19

作者：

Baldi, A

Raymond, JC

Fabbiano, G

Zezas, A

Rots, AH

Schweizer, F

King, AR

Ponman, TJ

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[2] Carnegie Observ, Pasadena, CA 91101 USA

[3] Univ Leicester, Theoret Astrophys Grp, Leicester LE1 7RH, Leics, England

[4] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2006年 / 162卷 / 01期

关键词：

galaxies : individual (NGC 4038/39); galaxies : interactions; galaxies : peculiar; X-rays : galaxies; X-rays : ISM;

D O I：

10.1086/497914

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an analysis of the properties of the hot interstellar medium (ISM) in the merging pair of galaxies known as the Antennae (NGC 4038/4039), performed using the deep, co-added similar to 411 ks Chandra ACIS-S data set. These deep X-ray observations and Chandra's high angular resolution allow us to investigate the properties of the hot ISM with unprecedented spatial and spectral resolution. Through a spatially resolved spectral analysis, we find a variety of temperatures (from 0.2 to 0.7 keV) and NH (from Galactic to 2x10(21) cm(-2)). Metal abundances for Ne, Mg, Si, and Fe vary dramatically throughout the ISM from subsolar values (similar to 0.2) up to several times solar.

引用

页码：113 / 133

页数：21

共 43 条

[11] X-raying chemical evolution and galaxy formation in the Antennae [J].