Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27842
Title: | Detection of faint broad emission lines in type 2 AGN - I. Near-infrared observations and spectral fitting | Authors: | ONORI, FRANCESCA La Franca, F. Ricci, F. Brusa, M. Sani, E. Maiolino, R. BIANCHI, SIMONE BONGIORNO, ANGELA FIORE, Fabrizio Marconi, Alessandro Vignali, C. |
Issue Date: | 2017 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 464 | Issue: | 2 | First Page: | 1783 | Abstract: | We present medium resolution near-infrared spectroscopic observations of 41 obscured and intermediate class active galactic nuclei (AGN; type 2, 1.9 and 1.8; AGN2) with redshift z ≲ 0.1, selected from the Swift/Burst Alert Telescope 70-month catalogue. The observations have been carried out in the framework of a systematic study of the AGN2 near-infrared spectral properties and have been executed using Infrared Spectrometer And Array Camera/VLT, X-shooter/VLT and LUCI/LBT, reaching an average S/N ratio of ∼30 per resolution element. For those objects observed with X-shooter, we also obtained simultaneous optical and UV spectroscopy. We have identified a component from the broad line region in 13 out of 41 AGN2, with full width at half-maximum (FWHM) > 800 km s<SUP>-1</SUP>. We have verified that the detection of the broad line region components does not significantly depend on selection effects due to the quality of the spectra, the X-ray or near-infrared fluxes, the orientation angle of the host galaxy or the hydrogen column density measured in the X-ray band. The average broad line region components found in AGN2 has a significantly (a factor 2) smaller FWHM if compared with a control sample of type 1 AGN. | URI: | http://hdl.handle.net/20.500.12386/27842 | URL: | https://academic.oup.com/mnras/article/464/2/1783/2333854 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stw2368 | Bibcode ADS: | 2017MNRAS.464.1783O | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Onori_stw2368.pdf | PDF editoriale | 13.45 MB | Adobe PDF | View/Open |
Onori_1610.06243.pdf | preprint | 10.04 MB | Adobe PDF | View/Open |
27842-Onori_stw2368_P01.pdf | Miur | 8.78 MB | Adobe PDF | |
27842-Onori_stw2368_P02.pdf | Miur | 4.73 MB | Adobe PDF |
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