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| Paper: |
Molecules in the envelopes of old stars |
| Volume: |
9, Cool Stars, Stellar Systems, and the Sun: Sixth Cambridge Workshop |
| Page: |
429 |
| Authors: |
Lucas, R. |
| Abstract: |
Recent advances in radio observations of molecules in circumstellar envelopes are discussed. These include the detection of new molecular species in IRC + 10216 (SiC, SiC4); the discovery of strong masing lines from HCN; determinations of molecular abundances, including those of sulfur-bearing and carbon-bearing species in oxygen-rich stars; measurements of isotopic ratios of carbon, sulfur, silicon, nitrogen, and CO; and observations of particular objects such as young planetary and protoplanetary nebulae. |
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