论文标题
附近星系簇核心的内部气体质量温度轮廓
The inner gas mass-temperature profile in the core of nearby galaxy clusters
论文作者
论文摘要
我们在中央10 kpc中提供了一小部分凉爽核心簇样品中气体的质量温度曲线。由XMM反射光谱仪确定最热的气相的质量，在1.5和0.7 keV处。部分离子原子和分子相的质量是从已发表的H $α$和CO测量中获得的。我们发现，簇中0.7 keV的气体质量与分子气的质量非常相似。假设相位之间的压力平衡，这意味着它们占据量的量为$ 10^5 $。分子气体位于Hu星云中，通常是丝状的，并且与X射线发射气体的径向和位置角度重合。
We present a mass-temperature profile of gas within the central 10 kpc of a small sample of cool core clusters. The mass of the hottest gas phases, at 1.5 and 0.7 keV, is determined from X-ray spectra from the XMM Reflection Grating Spectrometers. The masses of the partially ionised atomic and the molecular phases are obtained from published H$α$ and CO measurements. We find that the mass of gas at 0.7 keV in a cluster is remarkably similar to that of the molecular gas. Assuming pressure equilibrium between the phases, this means that they occupy volumes differing by $10^5$. The molecular gas is located within the HU nebula which is often filamentary and coincides radially and in position angle with the soft X-ray emitting gas.
