论文标题
AGN和X射线与光学通量比率为z $ \ le $ 0.2
Accretion rate in AGN and X-ray-to-optical flux ratio at z $\le$ 0.2
论文作者
论文摘要
我们使用3xMM-DR7和SDSS-DR8调查的数据探索了545个本地星系的样本。我们进行了所有分析，最高为z \，$ \ sim $ \，0.2，我们研究了X/O通量比与不同类别的活性星系（例如Liners和Seyfert 2）之间的关系。但是，衬里和SY2星系分别显示出不同的特性，轻微的相关性和轻微的抗相关性。如前所述，这可以证实衬里和SY2星系具有不同的积聚效率，也许具有不同的吸积盘特性。 关键字：星系 - 活动； AGN-积聚率； AGN-黑洞质量； AGN -X射线属性； AGN-光学特性
We explored a sample of 545 local galaxies using data from the 3XMM-DR7 and SDSS-DR8 surveys. We carried out all analyses up to z\,$\sim$\,0.2, and we studied the relation between X/O flux ratio and accretion rate for different classes of active galaxies such as LINERs and Seyfert 2. We obtained a slight correlation between the two parameters if the whole sample of AGN is used. However, LINERs and Sy2 galaxies show different properties, slight correlation and slight anti-correlation, respectively. This could confirm that LINERs and Sy2 galaxies have different accretion efficiencies and maybe different accretion disc properties,as has been suggested previously. Keywords: galaxies - active; AGN - accretion rate; AGN - black hole masses; AGN - X-ray properties; AGN - optical properties
