3:00 PM - 3:15 PM
[PPS03-06] WISE/NEOWISE investigation of the dormant comet population
In recent years, infrared space missions have investigated asteroid sizes and albedos, giving us a unique opportunity to work on the further study of dormant comets (as infrared surveys are less biased against low albedo objects). Here we present a study of potential dormant comets observed by WISE/NEOWISE during its cryogenic mission phase in 2010 and the first three years of the reactivation survey since late 2013. We define the term "potential dormant comet" as one having a comet-like albedo (pv < 0.1) and comet-like orbits (the Tisserand parameter TJ < 3 and the aphelion distance Q > 4.5 au).
This presentation will address the following key points based on new observational data: (1) the size distribution of potential dormant comets, (2) the ratio of dormant to active short-period comets, and (3) the physical lifetime of cometary volatiles in the inner solar system.