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arXiv · 2002.11139

Optical Spectroscopy of nearby type1-LINERs

S. Cazzoli·I. Márquez·J. Masegosa·A. del Olmo·M. Povic·O. González-Martín·B. Balmaverde·L. Hernández-García·S. García-Burillo
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Abstract

We present the highlights from our recent study of 22 local (z$<$0.025) type-1 LINERs from the Palomar Survey, on the basis of optical long-slit spectroscopic observations taken with TWIN/CAHA, ALFOSC/NOT and HST/STIS (Cazzoli et al. 2018). Our goals were threefold: (a) explore the AGN- nature of these LINERs by studying the broad (BLR-originated) H$α$ component; (b) derive a reliable interpretation for the multiple narrow components of emission lines by studying their kinematics and ionisation mechanism (via standard BPTs); (c) probe the neutral gas in the nuclei of these LINERs for the first time. Hence, kinematics and fluxes of a set of emission lines, from H$β$ to [SII], and the NaD doublet in absorption have been modelled and measured, after the subtraction of the underlying light from the stellar component.

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S. Cazzoli, I. Márquez, J. Masegosa, A. del Olmo, M. Povic, O. González-Martín, B. Balmaverde, L. Hernández-García, S. García-Burillo. 2020-02-25. Optical Spectroscopy of nearby type1-LINERs. https://doi.org/10.1017/s174392132000263x

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