Accretion and Disk Lifetimes at Substellar Masses

This paper computes disks and accretion around substellar objects, which persist, by several lines of evidence, longer than disks around more massive stars. If the lowest-mass objects keep their disks longer, planet formation around them has more time, even with far less material. The headline computed values are: tau_002 = 5.2; tau_008 = 3.0; tau_03 = 1.8; Mdot_002 = 6.3e-11. All values were obtained from the stated scalings and normalisations in the deposited code; this study is simulated and computed, not measured, and no new observations are reported. Where the framework supplies no value for a quantity the question requires, that absence is reported plainly as a negative result.