X-ray study of NGC 1399 in the Fornax cluster of galaxies
ASTROPHYSICAL JOURNAL(1992)
摘要
Observations of the cD galaxy NGC 1399 in the Fornax cluster of galaxies with Ginga have detected extended X-ray emission out to a radius of more than approximately 360 kpc. The energy spectrum of this emission is well fitted with an optically thin thermal spectrum with kT = 1.46(-0 21)+0.05 keV with a strong iron emission line corresponding to an iron abundance of 1.1(-0.5)+1.3 times solar. The mass of the hot gas responsible for the X-ray emission is nearly the same as the total stellar mass of the cluster. Therefore, the presence of iron at near-solar abundance suggests that the mass of the hot gas ejected from galaxies is comparable to the total stellar mass. This result indicates that most of the hot gas in a very poor cluster is created through ejections from galaxies, rather than being primordial.
更多查看译文
关键词
GALAXIES, INDIVIDUAL (NGC-1399),GALAXIES, INTERGALACTIC MEDIUM,X-RAYS, GALAXIES
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要