We report a detailed study of an unidentified gamma-ray source located in the region of the compact stellar cluster NGC 3603 .
This is a star-forming region ( SFR ) powered by a massive cluster of OB stars .
A dedicated analysis of about 10 years of data from 10 GeV–1 TeV , provided by the Large Area Telescope ( LAT ) onboard the Fermi Gamma-ray Space Telescope , yields the detection of a pointlike source at a significance of 9 \sigma .
The source photon spectrum can be described by a power-law model with best fit spectral index of 2.35 \pm 0.03 .
In addition , the analysis of a deep Chandra image in the 0.5–7 keV band reliably rules out an extragalactic origin for the gamma rays .
We also conclude that the broadband spectral energy distribution of the point source can be explained well with both leptonic and hadronic models .
No firm evidence of association with any other classes of known gamma-ray emitters is found , therefore we speculate that 4FGL J1115.1 - 6118 is a gamma-ray emitting SFR .