  We present new high spatial resolution Kuiper Airborne Observatory 50 micron
and/or 100 micron data for 11 infrared-bright galaxies. We also tabulate
previously published KAO data for 11 other galaxies, along with the IRAS data
for the bulges of M 31 and M 81. We find that L(FIR)/L(B) and L(FIR)/L(H)
correlate with CO (1 - 0) intensity and tau(100). Galaxies with optical or
near-infrared signatures of OB stars in their central regions have higher
values of I(CO) and tau(100), as well as higher far-infrared surface
brightnesses and L(FIR)/L(B) and L(FIR)/L(H) ratios. L(FIR)/L(H(alpha)) does
not correlate strongly with CO and tau(100). These results support a scenario
in which OB stars dominate dust heating in the more active galaxies and older
stars are important in quiescent bulges.
