Millimeter wave spectra of methyl cyanate, methoxyamine and n-methylhydroxylamine: laboratory studies and astronomical search in space

Alonso, José L.

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https://hdl.handle.net/2142/91223 Copy

Description

Title

Millimeter wave spectra of methyl cyanate, methoxyamine and n-methylhydroxylamine: laboratory studies and astronomical search in space

Author(s)

Alonso, José L.

Contributor(s)

• Guillemin, J.-C.
• Cernicharo, Jose
• Tercero, Belén
• Alonso, E. R.
• Bermúdez, Celina
• Kolesniková, Lucie

Issue Date

2016-06-22

Keyword(s)

Spectroscopy of Large Amplitude Motions

Abstract

Recent discovery of methyl isocyanate (CH$_{3}$NCO) in Sgr B2(N) and Orion KL\footnote{D.~T.~Halfen, V.~V.~Ilyushin, L.~Ziurys, \textit{Astrophys. J. Lett.}, \textbf{2015}, \textit{812}, L5.}$^{,}$\footnote{J.~Cernicharo, Z.~Kisiel, B.~Tercero, L.~Kolesnikov\'{a}, I.~R.~Medvedev et. al., \textit{Astron. $\&$ Astrophys.}, \textbf{2016}, \textit{587}, L4.} makes methyl cyanate (CH$_{3}$OCN) a potential molecule in the interstellar medium. Methoxyamine (CH$_{3}$ONH$_{2}$) and its isomeric form N-methylhydroxylamine (CH$_{3}$NHOH) may be considered as a potential interstellar amines.\footnote{R. T. Garrod, S. L. Widicus Weaver, E. Herbst, \textit{Astrophys. J.}, \textbf{2008}, \textit{682}, 283.} Pure rotational transitions belonging to the ground state and several excited vibrational states were measured and analyzed up to 400 GHz. Rotational transitions revealed $A$-$E$ splitting due to the methyl internal rotation and were globally analyzed in order to provide a precise set of the spectroscopic constants. Results of this work were used to search for the spectral features of methyl cyanate in Orion KL, Sgr B2(N), B1-b and TMC-1 molecular clouds.\footnote{L.~Kolesnikov\'{a}, J.~L.~Alonso, C. Berm\'{u}dez, E.~R.~Alonso, J.~Cernicharo et. al., \textit{Astron. $\&$ Astrophys.}, \textbf{2016}, accepted.}

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

En

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http://hdl.handle.net/2142/91223

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Copyright 2016 by the authors

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