Radio observations of Comet 1983 D
Abstract
Radio continuum and spectral line observations of Comet 1983d (IRAS-Araki-Alcock) have been made using the Effelsberg 100-m telescope at a wavelength of 1.3 cm. A continuum point source of strength 9 mJy was detected at the time of perigee (May 11), and this emission persisted throughout the next day. The authors have probably detected both the NH3 (3,3) and H2O (616-523) lines from the comet. The derived ammonia production rate of 6×1026 s-1 suggests that NH3 forms roughly six percent of the gases subliming from the cometary nucleus.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- September 1983
- Bibcode:
- 1983A&A...125L..19A
- Keywords:
-
- Astronomical Spectroscopy;
- Cometary Atmospheres;
- Iras-Araki-Alcock Comet;
- Radio Astronomy;
- Ammonia;
- Comet Nuclei;
- Continuous Spectra;
- Emission Spectra;
- Line Spectra;
- Point Sources;
- Radiant Flux Density;
- Water;
- COMETS;
- IRAS-ARAKI-ALCOCK;
- RADIO OBSERVATIONS;
- WAVELENGTHS;
- EMISSIONS;
- AMMONIA;
- WATER;
- PRODUCTION RATES;
- GASES;
- COMET NUCLEI;
- PROCEDURE;
- Astronomy; Comets