A New M Dwarf Debris Disk Candidate in a Young Moving Group Discovered with Disk Detective

TL;DR

This paper reports the discovery of a new M dwarf debris disk candidate in a young moving group, using citizen science and Bayesian analysis, providing insights into debris disk evolution around M dwarfs.

Contribution

It introduces a new debris disk candidate identified via Disk Detective and BANYAN II, the oldest M dwarf debris disk in a young association, advancing understanding of disk evolution.

Findings

Candidate likely member of 45 Myr-old Carina group

Infrared excess detected at 12 and 22 μm

Potentially the oldest M dwarf debris disk in a moving group

Abstract

We used the Disk Detective citizen science project and the BANYAN II Bayesian analysis tool to identify a new candidate member of a nearby young association with infrared excess. WISE J080822.18-644357.3, an M5.5-type debris disk system with significant excess at both 12 and 22 $\mu$m, is a likely member ($\sim 90\%$ BANYAN II probability) of the $\sim 45$ Myr-old Carina association. Since this would be the oldest M dwarf debris disk detected in a moving group, this discovery could be an important constraint on our understanding of M dwarf debris disk evolution.