Acetone in interstellar space

Details Acetone in interstellar space Acetone in interstellar space

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...180l..13c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 180, no. 1-2, June 1987, p. L13-L16.

Astronomy and Astrophysics

Astrophysics

22

Acetone, Astronomical Spectroscopy, Interstellar Chemistry, Molecular Clouds, Association Reactions, Carbon Isotopes, Hydrogen, Low Frequencies, Spectral Resolution, Thermal Stability

Scientific paper

The authors report the first detection of acetone in interstellar space. They have identified the blended quadruplets JK+K- = 80,8 - 71,7 and 81,8 - 70,7, 110,11 - 101,10 and 111,11 - 100,10 in Sgr B2. The relative ratios of the quadruplets lines are compatible with thermal equilibrium. The derived column density of acetone is 5×1013cm-2, corresponding to an abundance relative to H2 5×10-11. This abundance can be explained by the formation of acetone via the radiative association of CH3+ and acetaldehyde.

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