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Fig. 11

Full array correlation between the [O i] line luminosities at 145 and 63 μm for 16 out of 18 objects (the [O i] 145 line is not detected in NGC 1333-IRAS2A and 4B). Class 0 sources are shown in red and Class I sources in blue. A typical error is shown on the NGC 1333-IRAS4A observation.
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