The 20th (and a half) Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
Published February 27, 2021 | Version v1
Poster Open

Peter Pan Disks: Long-lived Accretion Disks Around ≥20 Myr Low-Mass Stars

Creators

  • 1. MIT Kavli Institute
  • 2. NASA Goddard Space Flight Center

Contributors

Editor:

Description

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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Additional details

References

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