24um observations of AFGKM stars of 3 clusters

For our sample, the 1{sigma} dispersion about the main-sequence V-K_S_, K_S_-[24] locus is approximately 3.1%. We identify seven debris disks at 10% or more ( >=3{sigma} confidence level) above the expected K_S_-[24] for purely photospheric emission.

The incidence of excesses of 10% or greater in our sample at this age is 5.7^+3.1^_-1.7_%. Combining with results from the literature, the rate is 7.8^+4.2^_-2.1_% for early-type (B9-F4) stars and 2.7^+3.3^_-1.7_% for solar-like (F5-K9) stars. Our primary sample has strict criteria for inclusion to allow comparison with other work; when we relax these criteria, three additional debris disks are detected.