NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-19 T18:13:26 PDT
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For refcode 2008ApJS..174..282L:
Retrieve 23 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
2008ApJS..174..282L The Near-Infrared Broad Emission Line Region of Active Galactic Nuclei. I. The Observations Landt, Hermine; Bentz, Misty C.; Ward, Martin J.; Elvis, Martin; Peterson, Bradley M.; Korista, Kirk T.; Karovska, Margarita Abstract. 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. Key words: Galaxies: Active, Galaxies: Seyfert, Infrared: Galaxies, Galaxies: Quasars: Emission Lines
Retrieve 23 NED objects in this reference.
Please click here for ADS abstract

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