Continuum emission map and typical spectra. In the upper panels we show the continuum emission around 2.2 μm in the 8″ × 8″ and the 3″ × 3″ FOV, in units of 10^-18 W m^-2μm^-1. In the bottom panels, spectra extracted from three apertures with radius in the 3″ × 3″-FOV and from one aperture with radius in the 8″ × 8″-FOV that are marked in the continuum images are shown. The emission lines and the CO absorption band heads are marked in the spectra.