Publication
Reference
Sivaraman B., Nair B. G., Lo J.-I., Kundu S., Davis D., Prabhudesai V., Raja Sekhar B. N., Mason N. J., Cheng B.-M., Krishnakumar E. (2013). Vacuum Ultraviolet and Infrared Spectra of Condensed Methyl Acetate on Cold Astrochemical Dust Analogs. Astrophys. J., 778, 157.
Names
  • B. Sivaraman
  • B. G. Nair
  • J.-I. Lo
  • S. Kundu
  • D. Davis
  • V. Prabhudesai
  • B. N. Raja Sekhar
  • N. J. Mason
  • B.-M. Cheng
  • E. Krishnakumar
Article and keywords
Title
Vacuum Ultraviolet and Infrared Spectra of Condensed Methyl Acetate on Cold Astrochemical Dust Analogs
Abstract
Following the recent report of the first identification of methyl acetate ($CH_3COOCH_3$) 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.
Keywords
Methyl acetate, spectroscopy, astrochemistry, transmission spectra, VUV, mid-IR, ice, laboratory, CH3COOCH3
Content
spectral data
Year
2013
Journal
The Astrophysical Journal
Volume
778
Pages
157
Document type
article
Publication state
published
Doi
10.1088/0004-637X/778/2/157
Identifiers