Integrated SINFONI spectra for the four different components in our pointing of the overlap region of the Antennae. All spectra are smoothed by 3 bins in wavelength. Around 2.0   μm the atmospheric transmission is very low so we did not plot this part of the spectra. We mark in red the wavelengths of the strong night sky lines seen in the spectra (OH lines). In the right panel, blue contours mark the aperture from which each spectrum was extracted.