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Table 2

Rotational temperatures and column densities.

Molecule Trot (K) N (cm-2) Reference

C2S 18(1) 5.0(3) × 1013 (1)
C3S 44(2) 1.7(1) × 1013 (1)
C4S 20 a <7 × 1012b (2)
C5S 18-44 (2−14) × 1012 (2)
MgCCH 20 a 2 × 1012 (2)
NCCP 20 a 7 × 1011 (2)
SiH3CN 39 a 1 × 1012 (2)

Notes. Numbers in parentheses are 1σ uncertainties in units of the last digits. A source size of radius 20′′ has been adopted.

(a)

Trot has been fixed.

(b)

3σ upper limit.

Reference. (1) IRAM 30-m data at λ 3, 2, and 1.3 mm. (2) This study.

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