An Orphan No Longer? Detection of the Southern Orphan Stream and a Candidate Progenitor

Using a shallow, two-color survey carried out with the Dark Energy Camera, we detect the southern, possibly trailing arm of the Orphan Stream. The stream is reliably detected to a declination of $-{38}^{\circ }$, bringing the total known length of the Orphan stream to ${108}^{\circ }$. We find a slight offset or “S” shape in the stream at $\delta \simeq -{14}^{\circ }$ that would be consistent with the transition from leading to trailing arms. This coincides with a moderate concentration of $137\pm 25$ stars (to $g=21.6$) that we consider a possible remnant of the Orphan progenitor. The position of this feature is in agreement with previous predictions.