Complex cyanides as chemical clocks in hot cores | Astronomy & Astrophysics (A&A)

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Table 1

Initial ice composition vs. H₂O ice.

Species	IC 1	IC 2	IC 3	IC 4	IC 5
CO (ice)	10%	5%	10%	8%	17%
CO₂ (ice)	10%	15%	10%	13%	23%
NH₃ (ice)	5%	2%	5%	15%	15%
CH₃OH (ice)	5%	5%	5%	10%	4%
HCOOH (ice)	10%	5%	10%	7%	1%
CH₄ (ice)	5%	1%	5%	1.5%	1.5%
H₂CO (ice)	10%	2%	10%	3.5%	2%

Notes. The initial H₂ abundance for all models is 50% of the total material. The H₂ O ice abundances vs. the total composition are 5 × 10⁻⁶ for IC 1, 5 × 10⁻⁵ for IC 3, and 10⁻⁵ for IC 2, 4, and 5.

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