Probing the chemical complexity of amines in the ISM: detection of vinylamine (C$_2$H$_3$NH$_2$) and tentative detection of ethylamine (C$_2$H$_5$NH$_2$)

Shaoshan Zeng; Izaskun Jiménez-Serra; Víctor M. Rivilla; Jesús Martín-Pintado; Lucas F. Rodríguez-Almeida; Belén Tercero; Pablo de Vicente; Fernando Rico-Villas; Laura Colzi; Sergio Martín; Miguel A. Requena-Torres

doi:10.3847/2041-8213/ac2c7e

paper

Probing the chemical complexity of amines in the ISM: detection of vinylamine (C $_{2}$ H $_{3}$ NH $_{2}$ ) and tentative detection of ethylamine (C $_{2}$ H $_{5}$ NH $_{2}$ )

arXiv:2110.01791 · doi:10.3847/2041-8213/ac2c7e

Abstract

Amines, in particular primary amines (R-NH $_{2}$ ) are closely related to the primordial synthesis of amino acids since they share the same structural backbone. However, only limited number of amines has been identified in the ISM which prevents us from studying their chemistry as well as their relation to pre-biotic species that could lead to the emergence of life. In this letter, we report the first interstellar detection of vinylamine (C $_{2}$ H $_{3}$ NH $_{2}$ ) and tentative detection of ethylamine (C $_{2}$ H $_{5}$ NH $_{2}$ ) towards the Galactic Centre cloud G+0.693-0.027. The derived abundance with respect to H $_{2}$ is (3.3 $\pm$ 0.4) $\times$ 10 $^{- 10}$ and (1.9 $\pm$ 0.5) $\times$ 10 $^{- 10}$ , respectively. The inferred abundance ratios of C $_{2}$ H $_{3}$ NH $_{2}$ and C $_{2}$ H $_{5}$ NH $_{2}$ with respect to methylamine (CH $_{3}$ NH $_{2}$ ) are $\sim$ 0.02 and $\sim$ 0.008 respectively. The derived abundance of C $_{2}$ H $_{3}$ NH $_{2}$ , C $_{2}$ H $_{5}$ NH $_{2}$ and several other NH $_{2}$ -bearing species are compared to those obtained towards high-mass and low-mass star-forming regions. Based on recent chemical and laboratory studies, possible chemical routes for the interstellar synthesis of C $_{2}$ H $_{3}$ NH $_{2}$ and C $_{2}$ H $_{5}$ NH $_{2}$ are discussed.

8 pages, 4 figures, 1 table, article accepted in Astrophysical Journal Letters

Probing the chemical complexity of amines in the ISM: detection of vinylamine (C $_{2}$ H $_{3}$ NH $_{2}$ ) and tentative detection of ethylamine (C $_{2}$ H $_{5}$ NH $_{2}$ )

Abstract

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Probing the chemical complexity of amines in the ISM: detection of vinylamine (C2​H3​NH2​) and tentative detection of ethylamine (C2​H5​NH2​)

Abstract

References in corpus (12)

Cited by in corpus (24)

Probing the chemical complexity of amines in the ISM: detection of vinylamine (C $_{2}$ H $_{3}$ NH $_{2}$ ) and tentative detection of ethylamine (C $_{2}$ H $_{5}$ NH $_{2}$ )