THE COSMOS ACTIVE GALACTIC NUCLEUS SPECTROSCOPIC SURVEY. I. XMM-NEWTON COUNTERPARTS
THE COSMOS ACTIVE GALACTIC NUCLEUS SPECTROSCOPIC SURVEY. I. XMM-NEWTON COUNTERPARTS
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DOI：
10.1088/0004-637x/696/2/1195
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发表时间：
2009-05
期刊：
影响因子：
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通讯作者：
J. Trump;C. Impey;M. Elvis;P. McCarthy;J. Huchra;M. Brusa;M. Salvato;P. Capak;N. Cappelluti;F. Civano;A. Comastri;J. Gabor;H. Hao;G. Hasinger;K. Jahnke;B. Kelly;S. Lilly;E. Schinnerer;N. Scoville;V. Smolčić
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文献类型：
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作者：
J. Trump;C. Impey;M. Elvis;P. McCarthy;J. Huchra;M. Brusa;M. Salvato;P. Capak;N. Cappelluti;F. Civano;A. Comastri;J. Gabor;H. Hao;G. Hasinger;K. Jahnke;B. Kelly;S. Lilly;E. Schinnerer;N. Scoville;V. Smolčić
我们提出了一个X射线和光通量有限的样本的677 XMM-牛顿选定的目标覆盖2 deg 2宇宙演化调查领域的光谱学，与产量的485高置信度的红移。大部分光谱是在三个季节（2005-2007年）用麦哲伦（巴德）望远镜上的稻盛麦哲伦区域照相机和摄谱仪获得的。我们还包括在样本中以前公布的斯隆数字巡天光谱和补充观测MMT/Hectospec。我们详细的观察和分类分析。测量完成了90%，通量极限为f0.5-10 keV > 8 × 10−16 erg cm-2 s−1和i+AB 3 × 1042 erg s−1）至z < 1，包括光学遮蔽和非遮蔽类型。我们发现了统计学上显著的证据，在z < 1时，活动星系核的模糊与清晰的比率随红移而增加，随光度而减少。
We present optical spectroscopy for an X-ray and optical flux-limited sample of 677 XMM-Newton selected targets covering the 2 deg2 Cosmic Evolution Survey field, with a yield of 485 high-confidence redshifts. The majority of the spectra were obtained over three seasons (2005–2007) with the Inamori Magellan Areal Camera and Spectrograph instrument on the Magellan (Baade) telescope. We also include in the sample previously published Sloan Digital Sky Survey spectra and supplemental observations with MMT/Hectospec. We detail the observations and classification analyses. The survey is 90% complete to flux limits of f0.5–10 keV > 8 × 10−16 erg cm-2 s−1 and i+AB 3 × 1042 erg s−1) to z < 1, of both optically obscured and unobscured types. We find statistically significant evidence that the obscured-to-unobscured AGN ratio at z < 1 increases with redshift and decreases with luminosity.