Hunting for complex cyanides in protostellar ices with the JWST - A tentative detection of CH3CN and C2H5CN

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Table 1

Ice column densities.

Sources	$N_{{CH}_{3} CN} ({cm}^{- 2})$ ${N_{{\rm{C}}{{\rm{H}}_3}{\rm{CN}}}}\left( {{\rm{c}}{{\rm{m}}^{ - 2}}} \right)$	$N_{C_{2} H_{5} CN} ({cm}^{- 2})$ ${N_{{{\rm{C}}_2}{{\rm{H}}_5}{\rm{CN}}}}\left( {{\rm{c}}{{\rm{m}}^{ - 2}}} \right)$	$N_{{OCN}^{-}} ({cm}^{- 2})$ ${N_{{\rm{OC}}{{\rm{N}}^ - }}}\left( {{\rm{c}}{{\rm{m}}^{ - 2}}} \right)$
IRAS 16253	<2.5 ×10¹⁷	<7.1 ×10¹⁶	2.6 ×10¹⁶
B335	<2.0 ×10¹⁷	<1.4 ×10¹⁷	5.0 ×10¹⁶
HOPS 153	4.3 ×10¹⁷	1.2 ×10¹⁷	6.8 ×10¹⁶
HOPS 370	2.8 ×10¹⁷	7.1 ×10¹⁶	1.6 ×10¹⁷
IRAS 20126	4.0 ×10¹⁷	1.1 ×10¹⁷	2.6 ×10¹⁷

Notes. The uncertainties are estimated at around 30% for OCN and at around 50% for the other two species.

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