Radio emission spectra of isolated spiral galaxies and spiral members of pairs of galaxies

It is shown that objects with steep radio emission spectra occur significantly more often among isolated spiral galaxies than among spiral members of double galaxies. This, along with some other facts, indicates that members of pairs of galaxies are at a more active phase of their evolution than isolated galaxies. Translated fromAstrofizika, Vol. 40, No. 1, pp. 39–43, February, 1997.