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Table 7

Upper limits (3σ) on the column densities of the iCOMs detected in L1551-IRS5 towards L1489-IRS, B5-IRS1, and L1455-IRS1.

Species Ntot (a)
(cm−2)

L1489-IRS B5-IRS1 L1455-IRS1
CH3OH ≤2 × 1013 ≤1 × 1013 ≤2 × 1013
CH3CN ≤2 × 1011 ≤2 × 1011 ≤2 × 1011
CH3CHO ≤8 × 1011 ≤5 × 1011 ≤6 × 1011
HCOOCH3 ≤7 × 1012 ≤5 × 1012 ≤6 × 1012

Notes. (a) Column densities are beam averaged. The values are derived assuming Trot equal to 150K (i.e., assuming a hot corino region), as found in L1551-IRS5.

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