The nature of nuclear Hα emission in LINERs

Résumé fourni par la source

To get insight into the nature of the ionized gas in the nuclear region of LINERs, we performed a study of HST Hα imaging of 32 LINERs. The main conclusion from this analysis is that, for the large majority of LINERs (84%), an unresolved nuclear source has been identified along with extended emission with equivalent sizes ranging from a few tens to a few hundredths of parsecs. Their morphologies do not appear to be homogeneous, since they are grouped into three classes: nuclear outflow candidates (42%), core-halo morphologies (25%), and nuclear spiral disks (14%). Clumpy structures reminiscent of young stellar clusters are not a common property of LINERs. The remaining five galaxies are too dusty to allow a clear view of the ionized gas distribution.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.