less dense environments, such as filaments [e.g.. @2016AJ....151...96M], groups , the field [e.g. @2017ApJ...842..133L; @2018ApJ...866..112G] and even voids [@2019MNRAS.486..823R]. Moreover, observational studies [e.g. @2015MNRAS.452..937Y; @2017MNRAS.464L.110Z; @2018MNRAS.473.3747S; @2018MNRAS.475.4235A] and theoretical ones [e.g. @2016MNRAS.459L..51A; @2017MNRAS.466L...1D; @2017MNRAS.470.4231R; @2018MNRAS.478..906C; @2019MNRAS.tmp.2566L; @2019MNRAS.487.5272J] found that span a wide range of physical properties, and perhaps a correspondingly large range of origin stories.

A key challenge in developing a unified understanding of and their relation to other galaxies is that the data so far come from disparate studies, with different selection criteria, and mostly focus on high density environments. These deficits are exacerbated by the difficulties posed in observing such low surface brightness galaxies. Photometric information, such as broadband colors [e.g. @2019MNRAS.488.2143P], are available for many but are of limited value in determining the properties of the stellar populations, while spectroscopy, which can provide the necessary information, is only available for a small number of galaxies [e.g. @2016AJ....151...96M; @2017ApJ...838L..21K; @2018MNRAS.478.2034R; @2018MNRAS.479.4891F; @2018ApJ...859...37G].

Recently, @2019ApJS..240....1Z presented the initial results from the survey, a systematic study to detect and characterize the photometric properties of over a large area of the sky ($\sim$14000 deg$^2$) using data from the Legacy survey [@2019AJ....157..168D]. In its initial release, provided a catalog containing 275 UDG 