Chemistry of the Organic-Rich Hot Core G327.3-0.6

Details Chemistry of the Organic-Rich Hot Core G327.3-0.6 Chemistry of the Organic-Rich Hot Core G327.3-0.6

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...545..309g&link_type=abstract

The Astrophysical Journal, Volume 545, Issue 1, pp. 309-326.

Astronomy and Astrophysics

Astronomy

44

Ism: Abundances, Ism: Individual (G327.3-0.6), Ism: Molecules, Line: Identification, Radio Lines: Ism

Scientific paper

We present gas-phase abundances of species found in the organic-rich hot core G327.3-0.6. The data were taken with the Swedish-ESO Submillimetre Telescope (SEST). The 1-3 mm spectrum of this source is dominated by emission features of nitrile species and saturated organics, with abundances greater than those found in many other hot cores, including Sgr B2 and OMC-1. Population diagram analysis indicates that many species (CH3CN, C2H3CN, C2H5CN, CH3OH, etc.) have hot components that originate in a compact (~2") region. Gas-phase chemical models cannot reproduce the high abundances of these molecules found in hot cores, and we suggest that they originate from processing and evaporation of icy grain mantle material. In addition, we report the first detection of vibrationally excited ethyl cyanide and the first detection of methyl mercaptan (CH3SH) outside the Galactic center.

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