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| Paper: |
Organic Molecules in Comet C/2012 F6 (Lemmon) |
| Volume: |
499, Revolution in Astronomy with ALMA: The Third Year |
| Page: |
305 |
| Authors: |
Chuang, Y.-L.; Kuan, Y.-J.; Cordiner, M. A.; Charnley, S. B. |
| Abstract: |
Results obtained from ALMA observations of Comet C/2012 F6 (Lemmon) are presented. The 265-GHz continuum peak is uncovered to be offset spatially from spectral peaks, probably due to contamination from dust-tail emission. An isovelocity pattern typical to a rotating solid-body plane is apparent in the moment-1 HCN map. HNCO, cyclopropenylidene and vinyl cyanide are tentatively detected. The spatial distribution of HNCO appears to be localized and inhomogeneous in the cometary nucleus if HNCO is a primary species. Methanol gas is not only concentrated on the cometary nucleus but also extended to the north. c-C3H2 is likely associated with the cometary nucleus and C2H3CN, with the dust tail. The mighty ALMA certainly turns every ordinary comet into a Hale-Bopp, the brightest comet of the 20th century. |
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