Identification of interstellar amino acetonitrile in the hot molecular core G10.47+0.03: Possible glycine survey candidate for the future

Abstract

Amino acids are the essential keys that contribute to the study of the formation of life. The simplest amino acid, glycine (NH${}_2$CH${}_2$COOH), has been searched for a long time in the interstellar medium, but all surveys of glycine have failed. Since the detection of glycine in the interstellar medium was extremely difficult, we aimed to search for the precursor of glycine. After detailed searches of the individual prebiotic molecular species, we successfully identified the emission lines of possible glycine precursor molecule amino acetonitrile (NH${}_2$CH${}_2$CN) towards the hot molecular core G10.47+0.03 using the Atacama Large Millimeter/Submillimeter Array. We estimated the statistical column density of amino acetonitrile was (9.10$\pm$0.7)$\times$10${}^{15}$ cm${}^{-2}$ with rotational temperature ($T_{rot}$) 122$\pm$8.8 K. The estimated fractional abundance of amino acetonitrile was 7.01$\times$10${}^{-8}$. We found that the estimated fractional abundance of NH${}_2$CH${}_2$CN fairly agrees with the theoretical value predicted by the three-phase warm-up model from Garrod (2013).

Accepted for publication in Life Sciences in Space Research; 9 pages, 3 figures

References in corpus (3)

• Far-infrared laboratory spectroscopy of aminoacetonitrile and first interstellar detection of its vibrationally excited transitions
• Is there any linkage between interstellar aldehyde and alcohol?
• Millimetre-wave laboratory study of glycinamide and search for it with ALMA toward Sagittarius B2(N)

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• Detection and prebiotic chemistry of possible glycine precursor molecule methylenimine towards the hot molecular core G10.47+0.03
• ACA observation and chemical modelling of phosphorus nitride (PN) towards the hot molecular cores G10.47+0.03 and G31.41+0.31
• First detection of ethylene oxide and acetaldehyde in hot core G358.93$-$0.03 MM1: Tracing prebiotic oxygen chemistry
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