The Shrinking Habitable Zone Around Cooling Brown Dwarfs

This paper computes the habitable zone around a cooling brown dwarf, a zone that moves inward continuously because the central object never settles onto a main sequence. Any planet in such a zone is in it only temporarily, and the duration of that stay is a computable quantity. The headline computed values are: dHZ_1Gyr = 0.0065; dHZ_5Gyr = 0.0024; dHZ_01Gyr = 0.0141. 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.