Informazioni sull’evento

02/09/2018

Astrophysics Talk

Tuesday 26/02/2019 @ 14:00, Sala IV piano Battiferro

Sara Cazzoli (Instituto de Astrofísica de Andalucía), "Optical spectroscopy of type-1 AGN LINERs"

In this talk, I will present 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, MNRAS 480, 1106–1162). In this study, we explored the AGN-nature of these type-1 LINERs by studying the broad (BLR-originated) H? component. Then, we derived reliable interpretation for the different component of emission lines by studying their kinematics and ionization mechanism. Finally, we studied the neutral gas in the nuclei of these LINERs by modeling of the NaD absorption.