Abstract
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 and 70 ?m. We report the detection of 14 objects that possess 24 ?m fluxes ?30% larger than their predicted photospheres, tentatively corresponding to a disk fraction of ?35%, including seven objects that also possess 70 ?m excesses ?100 times larger than their predicted photospheres. The 24 ?m plus 70 ?m excess sources possess high fractional infrared luminosities, LIR/L* = 7 ? 10-4 to 3 ? 10-3; either they possess optically thin, dusty ? Pictoris-like disks or compact, opaque HD 98800-like disks.
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