Abstract
view Abstract Citations References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS 8.5-Millimeter Radio Emission from Venus and Taurus A. Lynn, V. L. ; Meeks, M. L. ; Sohigian, M. D. Abstract A precisely calibrated 28-ft antenna, operating at a wavelength of 8.5-mm with a beamwidth of 4.3 min, has been utilized to observe emission from Venus near inferior conjunction and from the source Taurus A. Simultaneous observations at 12 mm with the same antenna are described in a companion paper. The instrumentation and observational techniques are described. The brightness temperature of Venus, observed approximately one month after inferior conjunction during the passage of the radiometric probe, Mariner II, was found to be 3800+550K, in close agreement with previously reported results. Observations of Taurus A in the millimeter band have been previously reported only by Kuz'min and Salomonovich (Kuz'min, A. D. and Salomonovich, A. Ye., Dokl. Akad. Nauk SSSR 140, 81, 1961) at 8 mm. They observed the presence of a second source 36 sec east of Taurus A. Some evidence was found to support the existence of this second source but the results are inconclusive. Taurus A was found to have a width of 3.0'+ 1.0' in right ascension. Based on a width of 3.6, consistent with previous determinations, and assuming a Gaussian distribution of brightness, the flux density is found to be (300+45) X 10-26 W m-2 cps-1. The corresponding brightness temperature is 120+20K. The mean central brightness temperature of the moon was found to be 2540+200K. Publication: The Astronomical Journal Pub Date: June 1963 DOI: 10.1086/109145 Bibcode: 1963AJ.....68S.284L full text sources ADS |
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