2025ApJ...992..187F

Query : 2025ApJ...992..187F

2025ApJ...992..187F - Astrophys. J., 992, 187 (2025/October-3)

Rotational Spectroscopy and Tentative Interstellar Detection of 3-hydroxypropanal (HOCH2CH2CHO) in the G+0.693-0.027 Molecular Cloud.

FRIED Z.T.P., MOTIYENKO R.A., SANZ-NOVO M., KOLESNIKOVA L., GUILLEMIN J.-C., MARGULES L., UHLIKOVA T., BELLOCHE A., JORGENSEN J.K., HOLDREN M.S., XUE C., URBAN S., JIMENEZ-SERRA I., RIVILLA V.M. and McGUIRE B.A.

Abstract (from CDS):

We synthesized the astrochemically relevant molecule 3-hydroxypropanal (HOCH2CH2CHO) and subsequently measured and analyzed its rotational spectrum in several frequency regions ranging from 130 to 485 GHz. We analyzed the ground vibrational state as well as the two perturbed lowest-lying vibrationally excited states. With the resulting rotational parameters, we searched for this molecule in the Sagittarius B2(N) and NGC 6334I hot cores, the IRAS 16293-2422B hot corino, and the G+0.693-0.027 and TMC-1 molecular clouds. Rotational emission of 3-hydroxypropanal was tentatively detected toward G+0.693-0.027, and a column density of (8.6 ±1.4) × 1012 cm–2 was determined. However, this molecule was not detected in the other sources that were investigated. The chemical implications of this tentative discovery are analyzed, and several potential chemical formation pathways of this species are discussed.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Astrochemistry - Rotational spectroscopy - Interstellar molecules

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1872 0
2 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2421 1
3 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1357 1
4 NAME IRAS 16293-2422B Y*O 16 32 22.63 -24 28 31.8           ~ 352 0
5 NAME NGC 6334-I Cl* 17 20 53.35 -35 47 01.5           ~ 373 0
6 [BHC2016] MM1 cor 17 20 53.415 -35 46 57.88           ~ 121 0
7 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
8 [BMG2016] Sgr B2(N1) cor 17 47 19.889 -28 22 18.22           ~ 70 0
9 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 742 1
10 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1
11 NAME Large Molecule Heimat MoC 17 47 20.4943 -28 22 11.656           ~ 127 0
12 GCM +0.693 -0.027 MoC 17 47 21.9 -28 21 27           ~ 128 0

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