The Origins and Ages of Debris Disk Host Stars

Details The Origins and Ages of Debris Disk Host Stars The Origins and Ages of Debris Disk Host Stars

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005nrdd.conf...22m&link_type=abstract

Proceedings of the Miniworkshop on Nearby Resolved Debris Disks. October 19-20, 2005. Space Telescope Science Institute, Baltimo

Physics

Scientific paper

We are often interested in knowing the ages of debris disk stellar hosts for helping constrain the physics and evolution of dusty debris disks. Although often a difficult quantity to estimate, the presense of some clues (kinematic group membership, age diagnostics of low-mass companions, luminosity, etc.) can help us get a handle on debris disk star ages. Here I will discuss these clues, with particular focus on the kinematics and ages of the <20 Myr-old disk systems in the solar neighborhood. The kinematic and age diagnostic evidence suggests that many of the young star+disk systems in the solar neighborhood formed on the periphery of the nearest OB association (Sco-Cen) some ~10 Myr ago. I will also discuss the limitations and dangers of kinematic group memberships, as well as the problems of assigning stellar ages to low-mass companions.

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