INTEGRAL和SWIFT观测到的X射线源中的几个新的活动星系核
Several New Active Galactic Nuclei Among X-ray Sources Detected by INTEGRAL and SWIFT Observatories
摘要：
本文介绍了INTEGRAL和SWIFT天文台全天巡天观测中一组X射线源的光学鉴别结果。光学数据是用俄罗斯-土耳其1.5米望远镜（RTT 150）获得的。9个X射线源被确定为活动星系核（AGN）。其中两个是由附近的，几乎完全边缘上，螺旋星系MCG-01 - 05 -047和NGC 973。其中一个来源，IGR J16562-3301，最有可能是BL Lac天体（blazar）。其他活动星系核被观测为螺旋星系的恒星状核，在光谱中有宽的发射线。对于我们的大多数硬X射线选择活动星系核，它们的硬X射线亮度与[OIII]，5007光发射线的亮度有很好的相关性。然而，一些活动星系核的光度偏离这种关系。这些物体的分数可以高达20%。特别地，在两个邻近的边缘螺旋星系中，[OIII]线的通量变得更低，这可以用它们星系盘中的消光来解释。
英文摘要：
We present the results of the optical identifications of a set of X-ray sources from the all-sky surveys of INTEGRAL and SWIFT observatories. Optical data were obtained with Russian-Turkish 1.5-m Telescope (RTT150). Nine X-ray sources were identified as active galactic nuclei (AGNs). Two of them are hosted by nearby, nearly exactly edge-on, spiral galaxies MCG -01-05-047 and NGC 973. One source, IGR J16562-3301, is most probably BL Lac object (blazar). Other AGNs are observed as stellar-like nuclei of spiral galaxies, with broad emission lines in their spectra. For the majority of our hard X-ray selected AGNs, their hard X-ray luminosities are well-correlated with the luminosities in [OIII],5007 optical emission line. However, the luminosities of some AGNs deviate from this correlation. The fraction of these objects can be as high as 20%. In particular, the flux in [OIII] line turns to be lower in two nearby edge-on spiral galaxies, which can be explained by the extinction in their galactic disks.
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