We investigate the nature of the unidentified very-high-energy ( VHE ) \gamma -ray object , HESS J1832-093 , in a multi-wavelength context .
Based on X-ray variability and spectral index ( \Gamma _ { X } \sim 1.5 ) , and its broad-band spectrum ( which was remarkably similar to HESS J0632+057 , a confirmed \gamma -ray binary ) , HESS J1832-093 has been considered to be a strong \gamma -ray binary candidate in previous works .
In this work , we provide further evidence for this scenario .
We obtained a spectrum of its IR counterpart using Gemini/ Flamingo , finding absorption lines that are usually seen in massive stars , in particular O stars .
We also obtained a rather steep ATCA spectrum ( \alpha = -1.18 ^ { +1.04 } _ { -0.88 } ) which prefers a \gamma -ray binary over an AGN scenario .
Based on spatial-spectral analysis and variability search , we found that 4FGL J1832.9-0913 is possible to be associated with SNR G22.7-0.2 rather than with HESS J1832-093 only .