近距中等光度IRAS星系的射电观测

RADIO OBSERVATIONS OF NEARBY MODERATELY LUMINOUS IRAS GALAXIES

使用澳大利亚ＡＴ对６个近距中等红外光度的ＩＲＡＳ星系在双频上同时进行了观测．其中ＩＲＡＳ２０２７２－４７３８、ＩＲＡＳ２３１５６－４２３８探测到射电发射．获得了它们的射电流量、峰值位置、源的大小、频谱指数等射电参数，用红外、射电、光学资料对射电源进行了证认．并结合以前的观测资料讨论了这类星系射电发射的特点．

Six nearby moderately luminous IRAS galaxies have been observed at two wavelengths by using the Australian AT. Among them, radio emissions have been detected for two galaxies, i.e. IRAS 20272-4738 and IRAS 23156-4238, and their radio parameters, like radio fluxes, peak positions, source sizes and spectral indices, are obtained. The radio sources are confirmed with infrared, radio and optical observations. Some characteristics of the radio emissions of these galaxies are discussed with previous observational data.