ExoMol molecular line lists - XVII. The rotation-vibration spectrum of hot SO3

Daniel S. Underwood, Sergei N. Yurchenko, Jonathan Tennyson, Ahmed F. Al-Refaie, Sønnik Clausen, Alexander Fateev

Research output: Contribution to journalJournal articleResearchpeer-review

458 Downloads (Pure)


Sulphur trioxide (SO3) is a trace species in the atmospheres of the Earth and Venus, as well as being an industrial product and an environmental pollutant. A variational line list for 32S16O3, named UYT2, is presented containing 21 billion vibration-rotation transitions. UYT2 can be used to model infrared spectra of SO3 at wavelengths longwards of 2 μm (ν <5000 cm−1) for temperatures up to 800 K. Infrared absorption cross-sections recorded at 300 and 500 C are used to validate the UYT2 line list. The intensities in UYT2 are scaled to match the measured cross-sections. The line list is made available in electronic form as supplementary data to this article and at www.exomol.com.
Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Pages (from-to)162-75
Publication statusPublished - 2016

Bibliographical note

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2016 The authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.


  • Molecular data
  • Opacity
  • Astronomical data bases: miscellaneous
  • Planets and satellites: atmospheres

Cite this