OTELO调查：Groth条带的深层BVRI宽带测光。X射线发射体的II特性
OTELO Survey: Deep BVRI broadband photometry of the Groth strip. II Properties of X-ray Emitters
摘要：
Groth场是OTELO（OSIRIS可调谐滤波器发射线对象）在光学820 nm和920 nm大气窗口中进行调查的目标天空区域之一。这个领域已被AEGIS（全波长扩展Groth带国际调查），涵盖了整个光谱范围，从X射线到无线电波。分析了总曝光时间为200 ksec的Chandra X射线数据，并结合Groth场的光学宽带数据，研究了X射线发射体的一组结构参数及其与X射线特性的关系。我们处理的原始，公共X射线数据，使用钱德拉互动分析观测和确定和分析不同的结构参数，以产生一个形态分类的X射线源。最后，我们使用2点关联函数分析了这些源的角度聚类。我们提出了一个目录的340个X射线发射器与光学对应。我们获得了数量计数，并将它们与AEGIS数据进行了比较。使用将X射线与光学比（X/O）与硬度比（HR）相关联的诊断图，按核类型对物体进行分类。此外，我们还将结构参数与其他X射线和光学性质相结合，首次发现了X/O比与Abraham浓度指数之间的关系，这可能表明早型星系比晚型星系具有更低的爱丁顿速率。通过对X射线源目录中4个子样本的初步分析，得到了一个显著的正角聚类。光延星系团的成团信号与红星系和甚红星系团的成团信号相似，表明环境在活动星系核现象中起着重要作用。
英文摘要：
The Groth field is one of the sky regions that will be targeted by the OTELO (OSIRIS Tunable Filter Emission Line Object) survey in the optical 820 nm and 920 nm atmospheric windows. This field has been observed by AEGIS (All-wavelength Extended Groth strip International Survey) covering the full spectral range, from X-rays to radio waves. Chandra X-ray data with total exposure time of 200ksec are analyzed and combined with optical broadband data of the Groth field in order to study a set of structural parameters of the X-ray emitters and its relation with X-ray properties. We processed the raw, public X-ray data using the Chandra Interactive Analysis of Observations and determined and analyzed different structural parameters in order to produce a morphological classification of X-ray sources. Finally, we analyzed the angular clustering of these sources using 2-point correlation functions. We present a catalog of 340 X-ray emitters with optical counterpart. We obtained the number counts and compared them with AEGIS data. Objects have been classified by nuclear type using a diagnostic diagram relating X-ray-to-optical ratio (X/O) to hardness ratio (HR). Also, we combined structural parameters with other X-ray and optical properties, and found for the first time an anticorrelation between the X/O ratio and the Abraham concentration index which might suggest that early type galaxies have lower Eddington rates than those of late type galaxies. A significant positive angular clustering was obtained from a preliminary analysis of 4 subsamples of the X-ray sources catalog. The clustering signal of the opticaly extended counterparts is similar to that of strongly clustered populations like red and very red galaxies, suggesting that the environment plays an important role in AGN phenomena.
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