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Table 4

Characteristic temperatures of the fast outflows derived in this work compared with other nebular parameters.

Source Tk Flow lifetime ntot Refer.

CRL 618 200 K  ≲ 100 yr 5 × 106 cm-3 2
CRL 2688 100 K 200 yr  ~106 cm-3 1,3
OH 231.8+4.2 30 K 1000 yr  ~2 × 105 cm-3 4
NGC 6302 40 K  ≲ 800 yr 2 × 104 cm-3 5
Frosty Leo 60 K  ~1700 yr 104 cm-3 6
IRAS 17436+5003 60 K  ~500 yr  ~106 cm-3 1,7

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