Detection of hydrogen cyanide emission from the peculiar oxygen–rich evolved star IRC + 10420
| Autor: | P. R. Jewell, Lewis E. Snyder, M. S. Schenewerk |
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| Rok vydání: | 1986 |
| Předmět: |
Multidisciplinary
Red giant Hydrogen cyanide Astronomy chemistry.chemical_element Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Circumstellar envelope Planetary nebula Chemical reaction Oxygen chemistry.chemical_compound chemistry Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Emission spectrum Supergiant Astrophysics::Galaxy Astrophysics |
| Zdroj: | Nature. 323:311-313 |
| ISSN: | 1476-4687 0028-0836 |
| DOI: | 10.1038/323311a0 |
| Popis: | Chemical reaction models do not predict appreciable amounts of hydrogen cyanide (HCN) in oxygen rich [O]>[C] circumstellar envelopes. Recently, two detections of HCN in oxygen–rich envelopes have been reported1. Here we report the first detection of HCN in the oxygen–rich evolved star IRC + 10420. This star has been classified as an F8 supergiant and is considered by many to be in transition between a red giant star and a planetary nebula. Its circumstellar envelope may be in a more advanced stage of chemical evolution than red giant envelopes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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