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Vacuum ultraviolet and infrared spectra of condensed methyl acetate on cold astrochemical dust analogs

Sivaraman, B., Nair, B.G., Lo, J.-I., Kundu, S., Davis, D., Prabhudesai, V., Raja Sekhar, B.N., Mason, Nigel, Cheng, B.-M., Krishnakumar, E. and others. (2013) Vacuum ultraviolet and infrared spectra of condensed methyl acetate on cold astrochemical dust analogs. Astrophysical Journal, 778 (2). (doi:10.1088/0004-637X/778/2/157) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:74714)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL:
https://doi.org/10.1088/0004-637X/778/2/157

Abstract

Following the recent report of the first identification of methyl acetate (CH3COOCH3) in the interstellar medium (ISM), we have carried out vacuum ultraviolet (VUV) and infrared (IR) spectroscopy studies on methyl acetate from 10 K until sublimation in an ultrahigh vacuum chamber simulating astrochemical conditions. We present the first VUV and IR spectra of methyl acetate relevant to ISM conditions. Spectral signatures clearly showed molecular reorientation to have started in the ice by annealing the amorphous ice formed at 10 K. An irreversible phase change from amorphous to crystalline methyl acetate ice was found to occur between 110 K and 120 K.

Item Type: Article
DOI/Identification number: 10.1088/0004-637X/778/2/157
Uncontrolled keywords: astrochemistry, ISM: molecules, methods: laboratory: solid state, techniques: spectroscopic
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Nigel Mason
Date Deposited: 16 Jul 2019 13:04 UTC
Last Modified: 16 Feb 2021 14:05 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/74714 (The current URI for this page, for reference purposes)

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