Disk Frequency and Distribution in OB Associations


First Author:
Tom Megeath
Email: megeath AT physics.utoledo.edu
University of Toledo
2801 W. Bancroft St
Toledo OH 43606
Coauthors:

Abstract

I will overview Spitzer surveys of nearby OB associations, with an emphasis on surveys of the Orion OB1 association. These surveys show extended distributions of low mass stars, including crowded clusters surrounding massive stars and lower density regions where stars form in relative isolation. I will discuss the influence of these environments on star formation and disk evolution. Of particular interest for disk evolution are the 2-10 Myr stars found in the association but outside the molecular clouds. These stars provide a unique testbed for studying disk evolution and also a fossil record of star formtion in the larger OB association.
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