The near-infrared broad emission line region of active galactic nuclei. I. The observations

被引：112
|
作者：
Landt, Hermine [1 ]
Bentz, Misty C. [2 ]
Ward, Martin J. [3 ]
Elvis, Martin [1 ]
Peterson, Bradley M. [2 ]
Korista, Kirk T. [4 ]
Karovska, Margarita [1 ]
机构：
[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
[2] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA
[3] Univ Durham, Dept Phys, Durham DH1 3LE, England
[4] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA
来源：
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2008年 / 174卷 / 02期
基金：
英国科学技术设施理事会;
关键词：
galaxies : active; galaxies : Seyfert; infrared : galaxies; quasars : emission lines;
D O I：
10.1086/522373
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present high-quality (high signal-to-noise ratio and moderate spectral resolution) near-infrared (near-IR) spectroscopic observations of 23 well-known broad emission line active galactic nuclei (AGNs). In addition, we obtained simultaneous (within 2 months) optical spectroscopy of similar quality. The near-IR broad emission line spectrum of AGNs is dominated by permitted transitions of hydrogen, helium, oxygen, and calcium, and by the rich spectrum of singly ionized iron. In this paper we present the spectra, line identifications, and measurements, and we address briefly some of the important issues regarding the physics of AGN broad emission line regions. In particular, we investigate the excitation mechanism of neutral oxygen and confront for the first time theoretical predictions of the near-IR iron emission spectrum with observations.
引用
收藏
页码：282 / 312
页数：31
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