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Table 3.

Methyl/ethyl ratios in Orion KL and Sgr B2.

Ratio Orion KL Sgr B2
Met-NCO/Et-NCO ≥10 ≥10
Met-CN/Et-CN 0.55a 1.35, 0.78b
Met-OH/Et-OH 45c 21, 15d
Met-OCOH/Et-OCOH 120e 15, 11f

Notes.

(a)

López et al. (2014), assuming hot core (vLSR ≃ 3–5 km s−1) and plateau Orion KL components.

(b)

Belloche et al. (2009), for 63 and 73 km s−1 velocity components.

(c)

Tercero et al. (2015), for south hot core (vLSR ≃ 7–8 km s−1).

(d)

Belloche et al. (2009, 2013), for 63 and 73 km s−1 velocity components.

(e)

Tercero et al. (2015), for the compact ridge of Orion KL.

(f)

Belloche et al. (2009), for 64 and 74 km s−1 velocity components.

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