A search for non-hidden broad-line region Seyfert 2 galaxies
Astrophysics of Galaxies
2016-11-17 v1
Abstract
According to the unified model of active galactic nuclei, Seyfert 2 galaxies are physically the same as Seyfert 1 objects and they possess a broad-line region (BLR), but it is hidden from the observer due to their orientation. In the past few years, various authors reported that not all Seyfert 2 galaxies harbor a BLR. We compiled a sample of 38 Seyfert 2 galaxies to find non-hidden broad-line region (non-HBLR) objects. Using the theory of Nicastro et al. which suggests the existence of a critical value of the Eddington ratio below which BLR can't be formed, we found 26 non-HBLR Seyfert 2 candidates. We found also that 5 of these 26 non-HBLR objects could be low-ionization nuclear emission-line regions (LINERs).
Keywords
Cite
@article{arxiv.1611.05260,
title = {A search for non-hidden broad-line region Seyfert 2 galaxies},
author = {Georgi P. Petrov},
journal= {arXiv preprint arXiv:1611.05260},
year = {2016}
}
Comments
7 pages, 2 figures