A Photometric Analysis of the Inner Ring of LEDA 1000714.

Abstract

Ring galaxies are a peculiar type of galaxy and the recent discovery of a double ringed elliptical, called LEDA 1000714, that resembles Hoag's Object has given astronomers the chance to study this rare galaxy. Hoag-type galaxies feature completely detached rings and in order to understand these galaxies, we need to uncover as much information as possible to determine their nature, formation, and evolution. Previous study of LEDA 1000714 revealed much about the core and outer ring, including structure and radial profile of the core, structure of the outer ring, and ages for both parts, but due to poor resolution in the infrared, not much could be determined about the inner ring. With new near infrared images, we attempt to reveal a more in-depth analysis of the inner ring. Due to the outer ring only showing up in shorter wavelengths, we only report on the core and inner ring. We conducted isophotal analysis on the core to confirm previous findings on the structure and radial profile. Using the 2D image analysis program GALFIT, we were unable to obtain an image of the inner ring, but we were still able to recover a lower limit on magnitude of the ring. Also from GAFLIT, we were able to obtain new magnitudes of the core, and with previously found magnitudes, were able to produce the observed Spectral Energy Distribution and the age of the core.