Program: GS-2016A-FT-17

HESS J1832-093 is a TeV and X-ray point source on the Galactic plane, which could be a rare Galactic TeV gamma-ray binary inferred by the broadband SED and the high X-ray variability. Otherwise, it would be a background FSRQ with unusual properties at GeV energies. Because of the high reddening in the Galactic plane, a 2MASS source is the only known optical/NIR counterpart so far. Near-infrared spectroscopy therefore plays a crucial role to understand the physical origin of HESS J1832-093. Here, we propose an 1-hour Gemini-South spectroscopic observation for HESS J1832-093 to identify and study this intriguing gamma-ray system in NIR.