Optical spectroscopy of nearby type1-LINERs. Issue Volume 15:Issue S356(2019) (October 2019)

• Record Type: Journal Article
• Authors: Cazzoli, Sara; Márquez, Isabel; Masegosa, Josefa; del Olmo, Ascensión; Pović, Mirjana; González-Martín, Omaira; Balmaverde, Barbara; Hernández-García, Lorena; García-Burillo, Santiago
• Editors: Pović, Mirjana; Marziani, Paola; Masegosa, Josefa; Netzer, Hagai; Negu, Seblu H.; Tessema, Solomon B.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 15:Issue S356(2019)
• Page Start: 87
• Page End: 92
• Publication Date: 2019-10
• Subjects: galaxies: active, -- galaxies: kinematics and dynamics, -- techniques: spectroscopic; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S174392132000263X
• Languages: English
• ISSNs: 1743-9213

Abstract

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. Our goals were threefold: (a) explore the AGN-nature of these LINERs by studying the broad (BLR-originated) H α λ 6563 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 λ4861 to [SII]λλ 716, 6731, and the NaDλλ5890, 5896 doublet in absorption have been modelled and measured, after the subtraction of the underlying light from the stellar component.