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Properties of AGN in NIR within the context of the Eigenvector 1

Published online by Cambridge University Press:  29 March 2021

D. Dias dos Santos Open the ORCID record for D. Dias dos Santos [Opens in a new window] ,
A. Rodríguez-Ardila Open the ORCID record for A. Rodríguez-Ardila [Opens in a new window]  and
M. Marinello
D. Dias dos Santos
Affiliation:
Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas, CEP 12227-010, São José dos Campos - SP, Brazil email: denimaradds@id.uff.br
A. Rodríguez-Ardila
Affiliation:
Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas, CEP 12227-010, São José dos Campos - SP, Brazil email: denimaradds@id.uff.br Laboratório Nacional de Astrofísica, R. dos Estados Unidos, CEP 37504-364, Itajubá - MG, Brazil
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Abstract

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We present a spectral atlas of 70 type-I AGN with the wavelength ranging 0.4–2.5 μm. For 37 sources, this is the first report of NIR spectroscopy in literature. The sample was constructed to study narrow line Seyfert 1 and quasars, with a large range of line widths (800 km s−1 < FWHM < 4000 km s−1) and Fe II intensities (0.2 < R4570 < 2.8). This work presents partial results of an ongoing project that has the objective of modeling the continuum emission and emission lines in order to derive the physics driven the Eigenvector 1 through a panchromatic spectral analysis, with emphasis on strong to super-strong Fe ii emitters. Our results show that hot dust near the sublimation temperature is necessary to explain the 1μm break of the power law component of the continuum. We estimated the hot dust mass and found a weak or absent correlation with the Fe II intensity. Moreover, we found that low ionisation ions are formed in an outer region of the BLR.

Keywords

active galaxy nucleiSeyfertinfraredemission linesspectroscopic
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 460 - 461
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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