We report the discovery of a narrow stellar stream crossing the constellations of Sculptor and Fornax in the Southern celestial hemisphere. The portion of the stream detected in the Data Release 1 photometry of the ATLAS survey is at least 12 degrees long, while its width is ≈ 0.25 deg. The Color Magnitude Diagram of this halo sub-structure is consistent with a metal-poor [Fe/H] ≲−1.4 stellar population located at a heliocentric distance of 20 ± 2 kpc. There are three globular clusters that could tentatively be associated with the stream: NGC 7006, NGC 7078 (M15) and Pyxis, but NGC 7006 and 7078 seem to have proper motions incompatible with the stream orbit.
@article{arxiv.1403.3409,
title = {Discovery of a cold stellar stream in the ATLAS DR1 data},
author = {S. E. Koposov and M. Irwin and V. Belokurov and E. Gonzales-Solares and A. Kupcu Yoldas and J. Lewis and N. Metcalfe and T. Shanks},
journal= {arXiv preprint arXiv:1403.3409},
year = {2015}
}