NICER observation list: Target ID 470101

Ultra-compact X-ray binaries (UCXBs) are a subclass of low-mass X-ray binaries that contain a degenerate stellar companion in a short orbit (< 80 mins). The accretion disk in these systems differ in chemical composition from typical LMXBs due to a lack of hydrogen and overabundance of higher Z elements. These systems exhibit multiple emission lines in their reflection spectrum from O and Fe. These multiple emission features offer the opportunity to learn more about the properties of the compact object and accretion disks in these systems. We request four 30 ks NuSTAR and joint 10 ks NICER observations of 4U 0614+091 to reveal the entire reflection spectrum in order to examine any changes in the reflection spectrum with intensity and enhance our understanding of accretion in these systems.