The southern stellar stream spectroscopic survey (S5): Overview, target selection, data reduction, validation, and early science

T S Li, S E Koposov, D B Zucker, G F Lewis, K Kuehn, J D Simpson, A P Ji, N Shipp, Y-Y Mao, M Geha, A B Pace, A D Mackey, S Allam, D L Tucker, G S Da Costa, D Erkal, J D Simon, J R Mould, S L Martell, Z WanG M De Silva, K Bechtol, E Balbinot, V Belokurov, J Bland-Hawthorn, A R Casey, L Cullinane, A Drlica-Wagner, S Sharma, A K Vivas, R H Wechsler, B Yanny