Using photometry and spectroscopy to understand the origin of a dwarf ring galaxy

Ultra diffuse galaxies (UDGs) are low-surface-brightness dwarfs with unusually large sizes. A recently identified subset of these UDGs are called dwarf ring galaxies, which have as of yet undiscovered origins. We present the first detailed study of the properties of a dwarf ring called the Seahorse Galaxy. We carry out photometric analysis using Euclid and GALEX space telescopes along with ground based imaging, in order to characterize the galaxy light and its stellar populations.

We analyze spectroscopy from the Dark Energy Spectroscopic Instrument (DESI) in order to measure the redshift, metallicity, and star formation rate.