SiS in Orion-KL - evidence for outflow chemistry
Journal Article
·
· Astrophys. J.; (United States)
The J = 6-5 and J = 5-4 rotational transitions at 91 and 109 GHz toward Orion-KL provide evidence for the presence of SiS at an LSR velocity of 7.5 km/sec and with a half-width at zero power of 36 km/sec. The estimated current density corresponds to a fractal abundance of about 4 x 10 to the -9th. The implied SiO/SiS ratio of about 60 is close to the cosmic O/S ratio of about 40 and is much less than that predicted by ion-molecule models. Other unidentified lines near 91 and 109 have been identified. 19 references.
- Research Organization:
- Five College Radio Astronomy Observatory, Amherst, MA (USA)
- OSTI ID:
- 5438377
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 324; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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