Fig. A.1
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Extracted spectrum using the PSF method of different regions around Ced 110 IRS4A as indicated in Figure 2. Individual spectra are shown in colour and the sum of these individual data is presented in black. While the emission line at 2.8 µm is due to H2O(3) line, the strong absorption features at 3.55 µm in the region 9006 (red) is due to extraction artifact.
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