Poster Open Access
Silverberg, Steven M.;
Kuchner, Marc J.
This poster summarizes Silverberg et al. (2020) and subsequent new results in the literature regarding “Peter Pan” disks, a class of substantial M star disks with spectroscopic evidence of accretion in young stellar associations (YSAs) at ages ≥20 Myr—i.e. they seem to "never grow up." We outline the ensemble characteristics of the eight known Peter Pan disks from optical and near-IR spectroscopy, ALMA observations of WISEA J080822.18-644357.3 (J0808; the prototypical Peter Pan disk), and optical light curves, including TESS Cycle 3 observations of J0808. We find that these objects most plausibly represent long-lived CO-poor primordial disks, or "hybrid" disks, exhibiting both debris and primordial-disk features. We finally outline Disk Detective v2.0, a citizen science project for identifying circumstellar disks in WISE data that is explicitly designed to leverage Gaia to search for new Peter Pan disks.
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silverberg_coolstars_20half_PeterPanDisks_finalv3.pdf
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