Analysis of nuclear emission and surface brightness of LINER galaxies using images from the Hubble Space Telescope

The main objective of this work was to find the nature of a sample of 78 galaxies type Low Ionization Nuclear Emission-line Region (LINER) and check if their characteristics resemble those of AGNs, for which a catalog of multifrequency images (ultraviolet, optical and near infrared) of a sample of 78 galaxies classified as LINER was made. An analysis with diagnostic diagrams was also performed on the entire sample to confirm its classification as a LINER galaxy. Finally, adjustments of surface brightness profile models were made for 64 objects in the total sample. Through the analysis of nuclear emission in multifrequency images, we obtained that 63% are candidates for AGN. While from the analysis with diagnostic diagrams we found that 71% are AGN, of which only 31 objects turned out to be LINERs. On the other hand, from the surface brightness profile models we obtained that only 38% have an unresolved source, which is characteristic of AGNs.

Enviado por o.reyes@irya.unam.mx, 2019 Sep