Ejection of material --"Jurads" -- from post main sequence planetary systems

TL;DR

This paper suggests that material ejected from aging planetary systems pollutes white dwarfs and contributes to interstellar objects like Oumuamua, with ejected material losing volatiles due to irradiation.

Contribution

It introduces a link between white dwarf pollution and interstellar minor bodies, proposing a mechanism for volatile loss during ejection in post-main sequence systems.

Findings

Ejection rates align with white dwarf pollution levels.

Ejected material likely loses volatiles due to irradiation.

Provides a possible explanation for Oumuamua's properties.

Abstract

We show that the rate of pollution of white dwarfs by asteroidal material implies a concomitant rate of material ejection that can contribute significantly to the population of interstellar minor bodies. We note also that the irradiation during post main sequence evolution implies that much of this ejected material may lose volatiles, providing a rationale for the curious properties of the recently discovered interstellar object Oumuamua.