  Active asteroids behave dynamically like asteroids but display comet-like
comae. These objects are poorly understood, with only about 30 identified to
date. We have conducted one of the deepest systematic searches for asteroid
activity by making use of deep images from the Dark Energy Camera (DECam)
ideally suited to the task. We looked for activity indicators amongst 11,703
unique asteroids extracted from 35,640 images. We detected three
previously-identified active asteroids ((62412), (1) Ceres and (779) Nina),
though only (62412) showed signs of activity. Our activity occurrence rate of 1
in 11,703 is consistent with the prevailing 1 in 10,000 activity occurrence
rate estimate. Our proof of concept demonstrates 1) our novel informatics
approach can locate active asteroids and 2) DECam data are well-suited to the
search for active asteroids.
