VLA limits for comets Austin (1982 VI) and P/Crommelin (1983n) - evidence for a diffuse OH halo
Unsuccessful searches of Comet Austin (1982 VI = 1982g) and Comet P/Crommelin (1983n) for 18 cm wavelength OH emission or absorption and for continuum emission have been made with the VLA. The results of the OH searches of both comets and the 2 cm wavelength continuum search for Comet P/Crommelin are given here. The detection of OH emission and absorption in both comets with single-element telescopes and the nondetection of OH with the VLA are interpreted as evidence for a diffuse OH halo. The nondetection of continuum emission supports the growing body of observational evidence against the conventional icy-grain halo theory. 20 references.
- Research Organization:
- National Radio Astronomy Observatory, Green Bank, WV; Chicago Univ., IL; Illinois Univ., Urbana; California Univ., Berkeley
- OSTI ID:
- 7158558
- Journal Information:
- Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 92; ISSN ANJOA
- Country of Publication:
- United States
- Language:
- English
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