Relationship between SFR per unit dust mass (yr⁻¹) and the dust temperature (K) as both a function of morphological type and environment – Virgo (top) and Field (bottom). The dot-dashed line illustrates the slope (not intercept) of the expected relationship if dust heating is primarily driven by star formation. The blue line is a linear fit to the late types (Sc/Sd and Sm/Irr) and the red line to the early types (E/S0).