在未识别的INTEGRAL来源中搜索活动星系核
Searching for AGNs among unidentified INTEGRAL sources
摘要：
本文报道了一种在未确认的积分源中识别活动星系核的新方法。该方法包括将第四个IBIS调查目录中列出的未识别源首先与红外线进行交叉相关，然后与无线电目录进行交叉相关，并通过X射线和光学跟踪观测进行后验验证，这些关联的可能性。为了检验这种方法，已从第四IBIS目录中提取了8个源的样本。对于7个样品来源，我们获得了鉴定，而最后一个（IGR J 03103 +5706）的信息不足以进行明确的分类，值得更深入的研究。我们确定了三个物体（IGR J 08190 -3835，IGR J17520-6018，IGR J21441+4640）为活动星系核，并建议另外三个（IGR J 00556 +7708，IGR J17219 -1509，IGR J21268+6203）可能是活动星系的基础上，他们的射电光谱，近红外测光和银河系平面以上的位置。其中一个源（IGR J 05583 -1257）被归类为星暴星系，但它可能与INTEGRAL探测错误地联系在一起。
英文摘要：
We report on a new method to identify Active Galactic Nuclei (AGN) among unidentified INTEGRAL sources. This method consists of cross-correlating unidentified sources listed in the fourth IBIS Survey Catalogue first with infrared and then with radio catalogues and a posteriori verifying, by means of X-ray and optical follow up observations, the likelihood of these associations. In order to test this method, a sample of 8 sources has been extracted from the fourth IBIS Catalogue. For 7 sources of the sample we obtained an identification, whereas the last one (IGR J03103+5706) has insufficient information for a clear classification and deserves more in-depth study. We identified three objects (IGR J08190-3835, IGR J17520-6018, IGR J21441+4640) as AGNs and suggest that three more (IGR J00556+7708, IGRJ17219-1509, IGR J21268+6203) are likely active galaxies on the basis of their radio spectra, near-infrared photometry and location above the Galaxy plane. One source (IGR J05583-1257) has been classified as a starburst galaxy but it might have been spuriously associated with the INTEGRAL detection.
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