Four New Peter Pan Disk Candidates from Disk Detective

We present four new identifications of candidate Peter Pan disks, objects with large WISE excesses and spectroscopic indicators of accretion in >20-Myr moving groups, from the Disk Detective citizen science project. The four objects comprise two apparent visual doubles, with separations within the 2MASS and WISE PSF. Both objects show infrared excess at 12 and 22 microns after taking both components into account. Three objects are high-probability members of the Columba and Carina associations based on evaluation with BANYAN Sigma, suggesting ages of 40-45 Myr. The fourth has an indeterminate likelihood of group membership. We present optical spectra of all four objects from Gemini/GMOS-S showing that all four objects have mid-M spectral types, low gravity consistent with youth, and broad H-alpha emission consistent with accretion-driven activity. These identifications raise the number of identified Peter Pan disks to seven. The question remains: why have gas-rich disks persisted so long around these particular stars? This research was supported by the NASA Astrophysics Data Analysis Program and the NASA Exoplanets Research Program.