A Spitzer Study of Dusty Disks in the Scorpius-Centaurus OB Association
          Christine Chen, NOAO
          Michael Jura, UCLA
          Karl Gordon, Steward Observatory
          Myra Blaylock, Steward Observatory
          We have obtained Spitzer Space Telescope MIPS observations of 40 F- and G- type common proper motion members of the Scorpius-Centaurus OB Association with ages between 5 and 20 Myr at 24 micron and 70 micron. We report the detection of fourteen objects which possess 24 micron fluxes >30% larger than their predicted photospheres, corresponding to a disk fraction of 35%, including seven objects which also possess 70 micron excesses >100 times larger than their predicted photospheres. The 24 micron plus 70 micron excess sources possess high fractional infrared luminosities, LIR/L* = 7e-4 - 3e-3; either they possess optically thin, dusty beta Pictoris-like disks or they possess compact, opaque HD 98800-like disks.