Fig. 5
Comparison of kinetic temperatures derived from para-H2CO 321–220/303–202 (black squares) and NH3 (2, 2)/(1, 1) (red points) ratios. Para-H2CO and NH3 kinetic temperatures of L1551, L1527, NGC 2071, NGC 2024FIR5, and W3IRS4 are selected from Takano (1986), Mangum et al. (1993), Moriarty-Schieven et al. (1995), Jijina et al. (1999), and Watanabe & Mitchell (2008).
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