摘要
We report the tentative detection of the ring molecule cyclopropenylidene (c-C3H2) in cometary comae. We observed three short-period comets: 73P/Schwassmann–Wachmann 3, 17P/Holmes, 103P Hartley 2, and two Oort Cloud comets: C/2007 N3 (Lulin) and C/2012 F6 (Lemmon) with the Arizona Radio Observatory Submillimeter Telescope (SMT) and the Atacama Large Millimeter/submillimeter Array (ALMA). We tentatively detected c-C3H2 in three of the comets, with molecule production rates in the range of (0.2–3.8) × 1025 molecules s−1, and c-C3H2/H2O mixing ratios of 0.01–0.19 per cent. Evidence from both the single-dish and interferometric data points to the presence of c-C3H2 being of a discrete transient nature and exhibiting an extended spatial distribution, indicating production from the decomposition of organic dust particles in the coma.
原文 | 英語 |
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頁(從 - 到) | 3439-3447 |
頁數 | 9 |
期刊 | Monthly Notices of the Royal Astronomical Society |
卷 | 534 |
發行號 | 4 |
DOIs | |
出版狀態 | 已發佈 - 2024 11月 1 |
ASJC Scopus subject areas
- 天文和天體物理學
- 空間與行星科學