H-ALPHA AND FAR-INFRARED EMISSION WITHIN THE EARLY-TYPE SPIRAL GALAXYM81 (VOL 110, PG 1115, 1995)

The S-100 mu m/S-60 mu m color temperatures reported in Table 1 and de picted in Figs. 7, 8, and 9 were inadvertently calculated using a lamb da(0) emissivity law rather than the h(-1) emissivity law cited. Revis ed figures and a table listing the correct temperatures are provided b elow. The revision has affected the magnitude of the dust temperatures but not the location of the maxima and minima depicted in Fig. 2. The revised temperatures are about 4 K lower than originally reported. Th e bulge of M81 is still the hottest location but not by as large a mar gin. Although small, the revision has decreased the distinction betwee n the temperatures observed for M81 and the temperatures predicted for diffuse dust heated by the general interstellar radiation field as il lustrated in Fig. 7. Additionally, a much smaller percentage (similar to 30%) of the far-infrared luminosity of M81 is radiated by dust with temperatures that are higher than the similar to 30 K expected for di ffuse dust heated by the general interstellar radiation field as illus trated in Fig. 8. It is still true, however, that the L(FIR)/L(H alpha ) ratios are consistent with the values determined for H II regions re gardless of the dust temperatures as illustrated in Fig. 9. The author s would like to thank Bev Smith for bringing this matter to our attent ion.