标题： XMM-Newton 对亮 Seyfert 1 星系 MCG+8-11-11 的观测 显示英文标题

标题： XMM-Newton observation of the bright Seyfert 1 galaxy, MCG+8-11-11

摘要： 我们报告了XMM-Newton对亮 Seyfert 1 星系 MCG+8-11-11 的观测结果。EPIC/p-n 相机、反射光栅光谱仪（RGS）和光学监测器（OM）的数据已被分析。p-n 能谱被一个幂律、一个光谱上无法解析的 Fe Kα 线、康普顿反射分量（与铁线等效宽度相比其较大值表明铁元素丰度不足）以及温物质吸收很好地拟合。RGS 谱中可以看到吸收线，但它们的识别不确定，需要较大的物质速度。OM 测得的紫外通量远高于 X 射线能谱的外推值，这表明存在一个紫外凸起。 显示英文摘要

摘要： We report on the XMM-Newton observation of the bright Seyfert 1 galaxy, MCG+8-11-11. Data from the EPIC/p-n camera, the Reflection Gratings Spectrometers (RGS) and the Optical Monitor (OM) have been analyzed. The p-n spectrum is well fitted by a power law, a spectrally unresolved Fe Kalpha line, a Compton reflection component (whose large value, when compared to the iron line equivalent width, suggests iron underabundance), and absorption by warm material. Absorption lines are apparent in the RGS spectra, but their identification is uncertain and would require large matter velocities. The UV fluxes measured by the OM are well above the extrapolation of the X-ray spectrum, indicating the presence of a UV bump.