Acetone: Laboratory Assignments and Predictions Through 620 GHz for the Vibrational-Torsional Ground State

Published

September 1, 2002

Author(s)

P Groner, S Albert, E Herbst, Frank De Luccia, Francis J. Lovas, Brian J. Drouin, J C. Pearson

Abstract

Acetone is an interstellar molecule with a complex rotational spectrum arising from the internal rotation of two methyl tops and their interaction with each other and the rigid-body rotation of the molecule. here, we report the measurement and assignment of a large number of new rotational-torsional transitions of acetone in the vibrational-torsional ground state at frequencies to 620 GHz. The newly measured lines have been combined with some previously measured transition frequencies and fitted by a procedure used successfully for dimethyl ether. From the fit to the global data set, we have extracted parameters that have enabled us to predict accuarately the frequencies and intensities of over 10,000 lines of possible astronomical importance at frequencies to 620 GHz.

Citation

Astrophysical Journal Supplement Series

Volume

142

Issue

No. 1

Pub Type

Journals

Keywords

acetone, internal rotation, microwave spectrum, molecular data, radio lines, rotational spectrum

Citation

Groner, P. , Albert, S. , Herbst, E. , De Luccia, F. , Lovas, F. , Drouin, B. and Pearson, J. (2002), Acetone: Laboratory Assignments and Predictions Through 620 GHz for the Vibrational-Torsional Ground State, Astrophysical Journal Supplement Series (Accessed October 17, 2025)