ODIN: Assessing Sample Purity of Lyman Alpha Emitting Galaxy Candidates at z = 2.4 in the Deep2-3 Field

Lyman Alpha Emitting Galaxies (LAEs) provide insight into the structure of the universe and evolution of galaxies over time. These LAEs feature a strong Lyman Alpha emission line at a rest-frame wavelength of 121.6 nm, which is a product of their high star formation rates and low line-of-sight dust content. The One-hundred-deg^2 DECam Imaging in Narrowbands (ODIN) focuses on collecting LAE samples at redshifts of 2.4, 3.1, and 4.5 using narrowband filters that correspond to each redshift (N419, N501, and N673, respectively) on the Dark Energy Camera (DECam). In this work, we combine N419 narrowband data with archival broadband data and select z = 2.4 LAE candidates in the Deep2-3 field. Our LAE samples are selected via a pipeline designed to avoid contaminating objects. We apply Galactic dust extinction corrections, along with aperture corrections, starmasking, data quality cuts, a continuum estimation technique, and general LAE selection criteria. These methods allow us to find a robust sample of z = 2.4 LAE candidates in the Deep2-3 field. We perform a visual inspection of these candidates using the ODIN Legacy viewer. Through this process, we can further refine our LAE sample and determine its purity.