Abstract
In this paper, we study the circumgalactic environment of LINER host galaxies, in a sample of 166 objects drawn from a Multifrequency Catalogue of LINERs by Carrillo et.1999). The aim of our work is to compare the environment of different types of LINERs, therefore we subdivided our sample in three groups: LINERs type, type, and transition objects (TL). The search has been carried out on the Digitized Sky Survey (DSS) up to a projected linear distance of 300using methods applied in several previous studies. We found that type LINERs and TLs seem to possess a richer environment than those of type. In addition, type LINERs and TLs show large companions with frequency similar to that of bright IRAS galaxies and Seyfert 2 host galaxies. We suggest that an evolutionary sequence from starbursting systems, to type and eventually to type-1 AGN, may be appropriate for most AGN and may be independent of luminosity.
