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Optical spectroscopy of type-2 LINERs

AuthorsHermosa Muñoz, L.; Cazzoli, S.; Márquez, Isabel ; Masegosa, Josefa
Issue Date7-Oct-2019
CitationIAUS 356: Nuclear Activity in Galaxies Across Cosmic Time (2019)
AbstractLow-Ionisation Nuclear Emission-line Regions (LINERs) are the least luminous and the most numerous among the local population of Active Galactic Nuclei (AGN). They can be classified as type-1 or type-2 if their optical spectra show or do not show, respectively, a broad component. It is associated with the presence of a Broad Line Region (BLR) in these systems. However, recent studies have proven that the classification of type-1 LINERs may be controversial, since space- and ground-based spectroscopy provide contradicting results on the presence of very broad components (Cazzoli et al. 2018). We have studied the nuclear spectra of 9 type-2 LINERs with intermediate spectral resolution HST/STIS data. We present the results on our analysis of the different spectral components, and discuss the eventual presence of BLR components in type-2 LINER galaxies, together with the possible presence of outflows, both in comparison with type-1 LINERs. We have
DescriptionIAU Symposium 356 on 'Nuclear Activity in Galaxies Across Cosmic Time', Addis Ababa (Ethiopia), October 7-11, 2019.
Appears in Collections:(IAA) Comunicaciones congresos
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