A& A Supplement series, Vol. 121, January 1997, 11 - 14
Received June 8, 1995; accepted April 13, 1996
J.A. Combi - G.E. Romero
Send offprint request: J.A. Combi
Instituto Argentino de Radioastronomía, C.C. 5, (1894) Villa Elisa, Prov. de Bs. As., Argentina
A spectral index map of Centaurus A (Cen A) has been computed using 408 MHz observations from the whole-sky survey by Haslam et al. (1981) and new 1435 MHz observations. The large-scale structure of the radio source is discussed in the light of these new data and a previous polarization survey. The observational evidence seems to support the expanding jet model for this source.
keywords: galaxies: individual: NGC 5128=Cen A -- galaxies: active -- radio continuum: galaxies