The FIR-Radio Correlation of Wolf-Rayet Galaxies and the Role of Star Formation in LINERs

Abstract

We find that a preliminary classification of LINERs' energetics may be made in terms of the FIR-radio correlation of Wolf-Rayet galaxies. The AGN- or starburst-supported LINERs can be distinguished by their FIR-to-radio ratio, $Q\equiv L(1.4\mathrm{GHz})/$ $L(60\mu \mathrm{m})>$ or $<0.01$. It is interesting to note that almost all the LINERs with inner rings might be starburst- supported, indicating reduced AGN activities compared with those of the AGN-supported ones. We also find that a shock-heating phase for the warm dust component might be important for some starbursts at the burst age of $\ge 10^7$ yr, with $Q<0.001$.

9 pages, 4 figures, to be published in Astronomy & Astrophysics