Determine the physical origin of the apparent increase in supernova dust mass with time

Determine whether the apparent increase in measured supernova dust mass with time represents a physical trend rather than a consequence of heterogeneous supernova types, observing instruments, analysis methods, dust origins, wavelength coverage, or optical-depth effects.

Background

The paper compiles dust-mass measurements for supernovae observed at different epochs and finds an empirical indication that measured dust mass increases with time. However, SN 1983V may contain pre-existing rather than newly formed dust, and observations at longer wavelengths may reveal cooler material that was previously inaccessible.

The authors also note that optical-depth evolution and differences among the supernova sample, instruments, and analysis techniques could produce the apparent trend. They state that the physical status of the trend cannot be established with the current sample and requires additional statistically consistent late-time infrared studies.