Identification of solid N2O in interstellar ices using open JWST data

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Volume 706 (February 2026)

A&A, 706 (2026) L4

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Table C.1.

Parameters of the studied objects and quantities derived from the fit.

Source	Class	Coordinates	D	T (K)	Column densities (N), ×10¹⁶ cm⁻²					R
			″	N₂O	N₂O	HNCO	¹³CO₂	OCN⁻	CO	%
B1-b^a	0	3^h33^m20.3415^s	0.8	$12_{- 2}^{+ 6}$ $12^{+6}_{-2}$	1.1±0.1	1.3±0.1	5.0±1.0	4.7±1.0	464±7	0.2
		31° 7′21.6139″
HOPS-91^b	0	5^h35^m18.8710^s	3.4	$23_{- 1}^{+ 0}$ $23^{+0}_{-1}$	0.8±0.2	1.2±0.2	7.0±1.0	10.0±0.8	387±8	0.2
		−5° 0′51.2845″
B1-c^a	0/I	3^h33^m17.8906^s	0.6	$23_{- 4}^{+ 0}$ $23^{+0}_{-4}$	2.2±0.2	2.1±0.3	11.0±0.9	13.3±0.7	385±7	0.6
		31° 9′31.8779″	2.4^g
HOPS-153^b (w)^h	0	5^h37^m57.0635^s	4.6	$18_{- 2}^{+ 2}$ $18^{+2}_{-2}$	1.6±0.3	0.4±0.2	8.3±0.7	10.1±0.6	261±6	0.6
		−7° 6′56.2890″
HOPS-153^b (g)	0	5^h37^m57.1443^s	2.2	$12_{- 2}^{+ 11}$ $12^{+11}_{-2}$	1.0±0.2	0.6±0.2	7.9±0.7	11.2±0.6	296±6	0.4
		−7° 6′56.9967″
PER-EMB-27^a (w)	0	3^h28^m55.5662^s	2.8	$11_{- 1}^{+ 4}$ $11^{+4}_{-1}$	1.3±0.1	1.9±0.1	8.1±0.7	14.6±0.5	295±4	0.4
		31° 14′36.4986″
PER-EMB-27^a (g)	0	3^h28^m55.6521^s	1.4	$11_{- 1}^{+ 2}$ $11^{+2}_{-1}$	4.4±0.3	2.9±0.4	8.9±0.5	13.1±0.4	261±4	1.7
		31° 14′36.6958″
B335^c (w)	0	19^h37^m1.0285^s	3.2	$23_{- 1}^{+ 0}$ $23^{+0}_{-1}$	1.3±0.1	–	4.0±1.0	4.2±1.0	284±8	0.4
		7° 34′9.4052″
B335^c (g)	0	19^h37^m1.1022^s	1.6	$23_{- 1}^{+ 0}$ $23^{+0}_{-1}$	0.7±0.1	–	3.0±1.0	2.4±0.9	236±7	0.3
		7° 34′9.9127″
HOPS-96^b	0	5^h35^m29.7202^s	5.4	$23_{- 1}^{+ 0}$ $23^{+0}_{-1}$	1.6±0.3	0.3±0.1	4.0±1.0	12.6±1.0	212±10	0.8
		−4° 58′48.7875″
HOPS-75^b	0	5^h35^m26.7402^s	1.8	$23_{- 3}^{+ 0}$ $23^{+0}_{-3}$	1.2±0.5	0.7±0.5	4.2±0.6	7.8±0.4	193±4	0.6
		−5° 6′9.4794″
HOPS-95^b	0	5^h35^m34.2059^s	5	$23_{- 3}^{+ 0}$ $23^{+0}_{-3}$	0.7±0.2	0.2±0.1	4.0±1.0	6.8±0.8	178±6	0.4
		−4° 59′52.5012″
HOPS-56^b	0	5^h35^m19.3829^s	2.48	$22_{- 6}^{+ 1}$ $22^{+1}_{-6}$	1.0±0.1	0.6±0.1	4.2±0.4	10.4±0.4	162±3	0.6
		−5° 15′34.6982″
2MASSJ17112317^e	0/I	17^h11^m23.1784^s	1.2	$23_{- 1}^{+ 0}$ $23^{+0}_{-1}$	1.2±0.1	–	3.2±0.4	3.5±0.3	124±2	1.0
		−27° 24′31.8296″
IRAS20126^d	0/I	20^h14^m25.9868^s	1.6	$23_{- 10}^{+ 0}$ $23^{+0}_{-10}$	1.0±0.2	0.3±0.1	3.7±0.4	17.9±0.3	130±2	0.8
		41° 13′31.6776″
HOPS 394^b	0	5^h35^m23.9090^s	1	$20_{- 10}^{+ 3}$ $20^{+3}_{-10}$	1.0±0.4	0.7±0.6	2.5±0.6	5.8±0.6	128±5	0.8
		−5° 7′52.6847″
EDJ2009-183^a	flat	3^h28^m59.3083^s	0.9	$23_{- 2}^{+ 0}$ $23^{+0}_{-2}$	0.19±0.02	–	1.3±0.3	0.6±0.3	110±2	0.2
		31° 15′48.4229″
HOPS-73^b (w)	0	5^h35^m27.6386^s	1.4	$11_{- 1}^{+ 12}$ $11^{+12}_{-1}$	2.0±0.5	0.8±0.4	3.7±0.6	7.7±0.5	95±4	2.1
		−5° 7′2.7197″
HOPS-73^b (g)	0	5^h35^m27.6716^s	0.7	$23_{- 13}^{+ 0}$ $23^{+0}_{-13}$	2.5±0.6	1.2±0.8	2.4±0.7	9.6±0.8	83±6	3.0
		−5° 7′2.9227″
SER-SMM-3^f	0	18^h29^m59.3176^s	1.8	$23_{- 1}^{+ 0}$ $23^{+0}_{-1}$	0.5±0.4	1.0±0.4	3.0±0.3	7.7±0.3	64±2	0.6
		1° 14′2.6471″

Notes. For each source listed are class, coordinates, diameter of the aperture (D), N₂O temperature, column density for N₂O, HNCO, ¹³CO₂, OCN⁻, CO and N₂O abundance with respect to CO (R). Protostar classes are taken from: aTobin et al. (2016)bFurlan et al. (2016), Tobin et al. (2022)cLaunhardt et al. (2013)dChen et al. (2016)eRiaz et al. (2009)fOrtiz-León et al. (2018)gFor B1-c the ring aperture is used, inner and outer diameters are listed. hW (white) and g (green) indicate the color of the aperture in Fig. A.1.

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