The spectra of Orion A and IRC + 10216 between 72.2 and 91.1 GHz

Astronomy and Astrophysics – Astrophysics

Scientific paper

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19

Carbon Stars, Interstellar Gas, Molecular Spectra, Orion Nebula, Stellar Spectra, Millimeter Waves, Radial Velocity

Scientific paper

Spectral scans of Orion A and the envelope of IRC + 10216, obtained with resolution 1 MHz over the complete range from 72.2 to 91.1 GHz using the radome-enclosed 20-m mm-wave telescope at Onsala Space Observatory during 1979-1982, are presented graphically (as main-beam brightness temperature in 500-MHz bands), providing the data basis is for the discussion of Johansson et al. (1984). Observing parameters include main-beam efficiency 0.58, aperture efficiency 0.44, FHPBW 47 arcsec, and total-system noise temperature 300-500 K.

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