Affiliation: Christ University
Conference ID : ASI2022_345
Title : UV-Optical view of Polar Ring Galaxy - NGC4262: A combined stellar population analysis
Authors : Akhil Krishna R, Sreeja S Kartha, and Ujjwal Krishnan
Abstract Type: Poster
Abstract Category : Extragalactic Astronomy
Abstract : Galaxies belonging to the lenticular type (S0) having a ring of gas and stars orbiting in a plane that is nearly polar/orthogonal are called Polar Ring Galaxies. In the hierarchical model of galaxy evolution, polar ring galaxies are considered as the connecting link between the ongoing mergers and the quiescent galaxies. In this work, we investigate the young and old stellar populations of polar ring galaxy NGC 4262 to understand its formation and evolution. Combinations of UV and optical data from the Ultraviolet Imaging Telescope (UVIT)/Astrosat and Canada-France-Hawaii Telescope(CFHT) have been used in this work. We have studied the star-forming regions in the galaxy NGC 4262 using UV images and analyzed their properties. We identified the globular cluster system in NGC 4262 and from the color-magnitude diagram, multiple populations have been observed. The spatial distribution analysis of subpopulations exhibits strong signs of past interaction in the host galaxy. From the combined analysis of young and old stellar populations, we have explored the formation and evolution of polar ring galaxy NGC 4262.