Yang Chen, Y. Bai, Xiangtao He, Jianghua Wu, Jing Wang, Qing-Kang Li, Yanchun Sun, R. Green, W. Voges
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引用次数: 1
摘要
我们的目标是通过使用组合选择技术来减少选择效应，提供一个比以往任何调查都更完整的类星体样本。在这里，我们给出了狮子座星团场中x射线候选者的观测结果。我们在这个领域发现了33个x射线agn，其中10个是新发现的。给出了这些agn的x射线数据和光谱。我们还利用2MASS的数据研究了x射线选择agn的近红外特性。我们样品中的大多数agn的颜色范围为0.0 < B - J < 2.5, 1.0 < J - K < 2.0和0.5 < H - K < 1.2。
The multi-wavelength quasar survey - IV. Quasars in the Leo cluster
We aim to provide a quasar sample that is more complete than any previous surveys by using a combined selection technique to reduce the selection effects. Here we present the observational results for the X-ray candidates in the field of the Leo Cluster. We found 33 X-ray AGNs in this field of which 10 are new discoveries. The X-ray data and optical spectra of these AGNs are given. We also study the near-IR properties of the X-ray-selected AGNs by using the data from 2MASS. Most of the AGNs in our sample span the color range 0.0 < B − J < 2.5, 1.0 < J − K s < 2.0 and 0.5 < H − K s < 1.2.
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