Laboratory investigation of astronomical reactive species: the Vibrational satellites of c-C3H2 re-visited

Martin-Drumel, Marie-Aline

Permalink

https://hdl.handle.net/2142/100807 Copy

Description

Title

Laboratory investigation of astronomical reactive species: the Vibrational satellites of c-C3H2 re-visited

Author(s)

Martin-Drumel, Marie-Aline

Contributor(s)

• McCarthy, Michael C.
• Stanton, John F.
• Baraban, Joshua H.
• Thorwirth, Sven
• Pirali, Olivier
• Westerfield, J. H.
• Gupta, Harshal
• Changala, Bryan

Issue Date

2018-06-19

Keyword(s)

Astronomy

Abstract

Cyclopropenylidene (c-C3H2) is one of the few polyatomic hydrocarbons ubiquitous in our galaxy, despite its reactive carbene nature (see e.g. [1]). Because it is so widely distributed in space, and because its 13C, D, and D2 isotopologues have also been detected (see e.g. [2]), c-C3H2 is an ideal probe of the physical conditions in various astrophysical objects. It is surprising though that its vibrational satellites have yet to be detected in the interstellar medium. To enable the interstellar detection of vibrationally excited c-C3H2, and observe for the first time the elusive ν4 and ν9 vibrational modes, we have undertaken an extensive investigation of its spectrum from the centimeter to the submillimeter wavelengths, resulting in the observation of many new vibrational satellites in a promising spectral region for astronomical observations. Our measurements are supported by anharmonic rovibrational calculations using a high-quality ab initio potential energy surface, with particular attention paid to the ν4/ν9 Coriolis interaction. [1] S. Spezzano et al., The Astrophysical Journal Supplement Series 200, 1 (2012) [2] S. Spezzano et al., The Astrophysical Journal Letters, 769, L19 (2013)

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/100807

DOI

10.15278/isms.2018.TL10

Copyright and License Information

Copyright 2018 Marie-Aline Martin-Drumel

Owning Collections