HCOOCH3 as a probe of temperature and structure in Orion-KL

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Table 6

Upper limits of column densities derived for acetic acid and glycolaldehyde from our PdBI data sets.

Emission peak	Temperature	Beam	N
	(K)	(″ × ″)	(cm^-2)

CH₂OHCHO
MF1	78	1.79 × 0.79	≤2.4 × 10¹⁴
MF1	120	3.79 × 1.99	≤2.8 × 10¹⁴
MF2	128	1.79 × 0.79	–^a
MF2	140	3.79 × 1.99	≤3.5 × 10¹⁴

CH₃COOH
MF1	78	1.79 × 0.79	≤1.8 × 10¹⁵
MF1	120	3.79 × 1.99	≤1.2 × 10¹⁵
MF2	128	1.79 × 0.79	≤2.6 × 10¹⁵
MF2	140	3.79 × 1.99	≤1.4 × 10¹⁵

Notes.

^(a)

All the glycolaldehyde lines are blended, so that the upper limit is not significant.

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