2025ApJ...994...83L

Query : 2025ApJ...994...83L

2025ApJ...994...83L - Astrophys. J., 994, 83 (2025/November-3)

Millimeter-wave Spectrum Analysis and Searches for 2-aminopropenenitrile (${{\rm{H}}}_{2}{\rm{C}}\rm{=}{\rm{C}}({\mathrm{NH}}_{2})\mathrm{CN}$) toward the Galactic Center Sources Sgr B2(N1) and G+0.693-0.027.

LUKOVA K., KOLESNIKOVA L., GUILLEMIN J.-C., UHLIKOVA T., KOUCKY J., HORAK F., HRUBCIK L., VAVRA K., KANIA P., URBAN S., BELLOCHE A., JIMENEZ-SERRA I. and RIVILLA V.M.

Abstract (from CDS):

We present an analysis of the millimeter-wave spectra of 2-aminopropenenitrile (${{\rm{H}}}_{2}{\rm{C}}\rm{=}{\rm{C}}({\mathrm{NH}}_{2})\mathrm{CN}$), an α-aminonitrile of plausible prebiotic and astrophysical relevance. The molecule has a rotational spectrum that is in harmony with a large-amplitude motion of the amino group. Accurate rest transition frequencies are reported in selected regions between 158 and 324 GHz, along with extended and improved sets of molecular parameters for the ground state. In addition, several vibrational satellites were identified for the first time. Experimental results were used to search for 2-aminopropenenitrile toward two chemically rich interstellar sources in the Sgr B2 region of the Galactic center: the hot molecular core Sgr B2(N1S) and the molecular cloud G+0.693-0.027. We also searched for the reduced derivative, 2-aminopropionitrile (${{\rm{CH}}}_{3}{\rm{CH}}({{\rm{NH}}}_{2}){\rm{CN}}$), in the former source. None of the molecules were detected, and the upper limits of their column densities were obtained.

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

Journal keyword(s): Millimeter-wave spectroscopy - Rotational spectroscopy - Catalogs - Interstellar medium - Molecular spectroscopy - Experimental data - Radio astronomy

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

Simbad objects: 5

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Number of rows : 5
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 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
2 [BMG2016] Sgr B2(N1) cor 17 47 19.889 -28 22 18.22           ~ 70 0
3 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 742 1
4 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1
5 GCM +0.693 -0.027 MoC 17 47 21.9 -28 21 27           ~ 128 0

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