2023ApJ...950...57T

Query : 2023ApJ...950...57T

2023ApJ...950...57T - Astrophys. J., 950, 57 (2023/June-2)

Digging into the Interior of Hot Cores with the ALMA (DIHCA). III. The Chemical Link between NH₂CHO, HNCO, and H₂CO.

TANIGUCHI K., SANHUEZA P., OLGUIN F.A., GORAI P., DAS A., NAKAMURA F., SAITO M., ZHANG Q., LU X., LI S. and CHEN H.-R.V.

Abstract (from CDS):

We have analyzed the NH₂CHO, HNCO, H₂CO, and CH₃CN (¹³CH₃CN) molecular lines at an angular resolution of ∼0.″3 obtained by the Atacama Large Millimeter/submillimeter Array Band 6 toward 30 high-mass star-forming regions. The NH₂CHO emission has been detected in 23 regions, while the other species have been detected toward 29 regions. A total of 44 hot molecular cores (HMCs) have been identified using the moment 0 maps of the CH₃CN line. The fractional abundances of the four species have been derived at each HMC. In order to investigate pure chemical relationships, we have conducted a partial correlation test to exclude the effect of temperature. Strong positive correlations between NH₂CHO and HNCO (ρ = 0.89) and between NH₂CHO and H₂CO (0.84) have been found. These strong correlations indicate their direct chemical links; dual-cyclic hydrogen addition and abstraction reactions between HNCO and NH₂CHO and gas-phase formation of NH₂CHO from H₂CO. Chemical models including these reactions can reproduce the observed abundances in our target sources.

Journal keyword(s): Astrochemistry - Interstellar molecules - Massive stars - Star formation

Simbad objects: 35

Full paper

View the references in ADS

Number of rows : 35

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Sp type	#ref 1850 - 2026	#notes
1	HH 212	HH	05 43 51.41	-01 02 53.1	~	443	1
2	OH 333.2-00.1	Y*?	16 19 50.87064	-50 15 10.2888	~	38	0
3	AGAL G333.466-00.164	cor	16 21 20.170	-50 09 47.77	~	27	0
4	AGAL G333.129-00.559	cor	16 21 35	-50 40.9	~	25	0
5	AGAL G335.789+00.174	cor	16 29 47.189	-48 15 50.23	~	28	0
6	SDC G335.579-0.292	DNe	16 30 58.00	-48 44 16.3	~	45	0
7	AGAL G336.018-00.827	smm	16 35 09.290	-48 46 45.86	~	24	0
8	IRAS 16547-4247	Y*O	16 58 17.208	-42 52 08.16	~	187	0
9	IRAS 16562-3959	SFR	16 59 42.257	-40 03 45.17	~	77	0
10	NAME NGC 6334-I	Cl*	17 20 53.35	-35 47 01.5	~	373	0
11	NAME NGC 6334 I(N)	smm	17 20 54	-35 45.0	~	165	1
12	AGAL G351.774-00.537	cor	17 26 43	-36 09.3	~	43	0
13	NAME Galactic Center	reg	17 45 39.60213	-29 00 22.0000	~	16269	0
14	NAME Sgr B2	MoC	17 47 20.4	-28 23 07	~	2443	1
15	GCM +0.693 -0.027	MoC	17 47 21.9	-28 21 27	~	128	0
16	AGAL G005.884-00.392	smm	18 00 30.408	-24 03 59.66	~	25	0
17	GAL 010.47+00.03	HII	18 08 38.4	-19 51 52	~	159	0
18	MMB G011.109-00.114	Y*O	18 10 28.25	-19 22 29.1	~	67	0
19	W 31c	HII	18 10 29.1	-19 56 05	~	357	0
20	GAL 012.89+00.49	HII	18 11 51.3	-17 31 29	~	217	0
21	AGAL G011.917-00.612	Y*O	18 13 58	-18 54.3	~	22	0
22	W 33a	Y*O	18 14 39.56547	-17 52 02.2260	~	746	0
23	IRAS 18151-1208	Y*O	18 17 58.1254	-12 07 24.893	~	114	0
24	AGAL G014.114-00.574	Y*O	18 18 13	-16 57.4	~	35	0
25	NAME HH 80-81 IRS	HII	18 19 11.8	-20 47 35	~	157	0
26	EGO G016.59-0.05	HII	18 21 07.9	-14 31 53	~	129	0
27	NAME IRDC 18223-3	Y*O	18 25 08	-12 45.5	~	80	0
28	AGAL G024.633+00.152	Y*O	18 35 40.0	-07 18 40	~	14	0
29	RAFGL 5515	HII	18 36 29.0	-07 40 33	~	35	0
30	CORNISH G029.9559-00.0168	Y*O	18 46 04.18	-02 39 21.3	~	385	0
31	AGAL G034.401+00.226	cor	18 53 18.6	+01 24 40	~	74	1
32	MSXDC G034.43+00.24	MoC	18 53 18.9	+01 26 39	~	122	0
33	[BSC2014] A	cor	18 54 00.645	+02 01 19.23	~	12	0
34	AGAL G035.132-00.744	smm	18 58 06	+01 37.1	~	20	0
35	[DLW84] G35.2N	HII	18 58 13.036	+01 40 36.00	~	138	0

To bookmark this query, right click on this link: simbad:objects in 2023ApJ...950...57T and select 'bookmark this link' or equivalent in the popup menu