VLA limits for comets Austin (1982 VI) and P/Crommelin (1983n) - Evidence for a diffuse OH halo

Details VLA limits for comets Austin (1982 VI) and P/Crommelin (1983n) - Evidence for a diffuse OH halo VLA limits for comets Austin (1982 VI) and P/Crommelin (1983n) - Evidence for a diffuse OH halo

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....92..166s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 92, July 1986, p. 166-170. Research supported by the Alexander von Humboldt Stiftung

Astronomy and Astrophysics

Astronomy

6

Comets, Halos, Hydroxyl Emission, Radio Sources (Astronomy), Centimeter Waves, Continuous Spectra, Ice

Scientific paper

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.

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