Accession Number : AD0732225

Title :   M17 and Taurus A: 3.4-mm Contour Maps and Integrated Fluxes.

Descriptive Note : Rept. for Jan 66-Mar 71,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Montgomery,John W. ; Epstein,Eugene E. ; Oliver,John P. ; Dworetsky,Michael W. ; Fogarty,William G.

Report Date : 01 OCT 1971

Pagination or Media Count : 24

Abstract : Contour maps at 3.4-mm of M17 (the Omega Nebula) and Tau A (the Crab Nebula) yield total integrated fluxes of 300 (+50, -40) and 215 (+44, -34) x 10 to the minus 26th power w/sqm-Hz, respectively. These results are in agreement with the values predicted by extrapolating data obtained at longer wavelengths. The M17 result is consistent with a thermal origin for the radiation. The low signal-to-noise ratio results reported by others, which indicated anomalously high total fluxes for Tau A at millimeter wavelengths, are not confirmed. The 3.4-mm maps are consistent with maps made at longer wavelengths. (Author)

Descriptors :   (*NEBULAE, RADIO ASTRONOMY), (*EXTRATERRESTRIAL RADIO WAVES, MAPPING), MILLIMETER WAVES, POLARIZATION

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE