Accession Number : AD0674388

Title :   UPPER LIMIT TO RADIO EMISSION FROM NOVA DELPHINI 1967,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) RADIO AND ELECTRICAL ENGINEERING DIV

Personal Author(s) : Andrew,B. H. ; Purton,C. R.

Report Date : 23 APR 1968

Pagination or Media Count : 2

Abstract : A NOVA (Alcock's Nova) appeared in 1967 in the constellation Delphinus and had a maximum brightness of 4.6 magnitudes in mid-September. An attempt to detect radio emission from the nova at a wavelength of 4.6 cm was made on September 4, 1967, when its visual magnitude was about 5.0. The observations were made with the 46 m radio telescope of the Algonquin Radio Observatory, and consisted of 100 scans across the position of the source, resulting in a total integration time on the source of approximately 25 min. The measured flux density was 0.006 plus or minus 0.012 flux units so the upper limit may be taken as 0.02 flux units. The confusion level, less than 0.011 flux units for this measurement was not large enough to affect seriously this upper limit. (Author)

Descriptors :   (*EXTRATERRESTRIAL RADIO WAVES, *NOVAE), BRIGHTNESS, CANADA

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE