Galáxias peculiares aneladas no S-PLUS

Abstract

We present a study of photometry using variable elliptical apertures and isophotal apertures from the Southern Photometric Local Universe Survey (S-PLUS) for peculiar ringed galaxies. These objects belong to the group of irregular galaxies and have the appearance of a ring, resulting from a collision or interactions with the environment or other galaxies. The study of these objects provides information about the interactive and evolutionary processes that some galaxies undergo, as well as regions where new stars are forming following these events. We analyzed the photometric quality of S-PLUS for our sample of 117 peculiar ringed galaxies, as they exhibit irregular morphology, extensive rings, ongoing interaction, or tidal effects. After analyzing the apertures for the objects in our sample, we concluded that the photometric data from S-PLUS are not applicable for all of them. Therefore, an individual inspection was carried out, separating objects with "reliable" photometry from those without it. For the objects with photometric quality, we compared the magnitude measurements and respective errors between the three apertures, analyzing the dispersions and reliability of the values, as well as the characteristics of the spectral energy distribution. For galaxies whose apertures do not cover their entire extent, we only have information about their separate parts, making it necessary to redo the photometry for these objects.