Abstract
Here we present a critical view of practical problems in the analysis of optical Fe II emission lines of Type 1 AGN spectra. Besides the very complex and unclear physical interpretation of the Fe II template shape, there are other issues that might affect the results of Fe II contribution as well (like the S/N, the AGN continuum component modelling, the complex shapes of other broad and narrow emission lines that are blending in the same part of the spectrum, the galactic host stellar component that could lead to mimicking of the Fe II template shape on some parts of spectrum, etc.). In this paper we concentrate particularly on the claims of possibility that in some objects Fe II could be strongly shifted to the red. We examine the effects in the fitting procedure that could artificially lead to such results.
| Original language | English |
|---|---|
| Journal | Proceedings of Science |
| Volume | 328 |
| DOIs | |
| State | Published - 2018 |
| Event | 2018 Revisiting Narrow-Line Seyfert 1 Galaxies and their Place in the Universe, NLS1 2018 - Padova, Italy Duration: Apr 9 2018 → Apr 13 2018 |
Bibliographical note
Publisher Copyright:© Copyright owned by the author(s) under the terms of the Creative Commons.
Funding
This research is part of the projects 176003 ”Gravitation and the large scale structure of the Universe” and 176001 ”Astrophysical spectroscopy of extragalactic objects” supported by the Ministry of Education and Science of the Republic of Serbia. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Funding for the Sloan Digital Sky Survey has been provided by the Alfred P. Sloan Foundation and the U.S. Department of Energy Office of Science. The SDSS web site is http://www.sdss.org. SDSS-III is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS-III Collaboration including the University of Arizona, the Brazilian Participation Group, Brookhaven National Laboratory, Carnegie Mellon University, University of Florida, the French Participation Group, the German Participation Group, Harvard University, the Instituto de Astrofisica de Canarias, the Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins University, Lawrence Berkeley National Laboratory, Max Planck Institute for Astrophysics, Max Planck Institute for Extraterrestrial Physics, New Mexico State University, University of Portsmouth, Princeton University, the Spanish Participation Group, University of Tokyo, University of Utah, Vanderbilt University, University of Virginia, University of Washington, and Yale University. This conference has been organized with the support of the Department of Physics and Astronomy “Galileo Galilei”, the University of Padova, the National Institute of Astrophysics INAF, the Padova Planetarium, and the RadioNet consortium. RadioNet has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 730562.
| Funders | Funder number |
|---|---|
| Padova Planetarium | |
| Alfred P Sloan Foundation | |
| Office of Science Programs | |
| Horizon 2020 Framework Programme | 730562 |
| Horizon 2020 Framework Programme | |
| Università degli Studi di Padova | |
| Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja |
ASJC Scopus subject areas
- General