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[94.07] Mid-Infrared Observations of Class I/Flat-Spectrum Objects in the \rho Ophiuchi, Serpens, and Chamaeleon I & II Dark Clouds

S. Springsteen, K. Haisch Jr. (University of Michigan), M. Barsony (San Francisco State University), T. Greene (NASA Ames Research Center), R. Jayawardhana (University of Michigan)

We present new mid-infrared 10 micron observations of 31 Class I/flat-spectrum young stellar objects in the nearby \rho Ophiuchi (d = 125 pc), Serpens (d = 310 pc) and Chamaeleon I and II (d = 160 pc and d = 178 pc respectively) dark clouds. Combined with our existing near-infrared JHKL (1 - 3.5 \mum) data, we construct spatially resolved spectral energy distributions for all binary/multiple objects to determine the evolutionary states for all system components. The results are compared with those typically found among older T Tauri stars. These observations are part of a larger systematic infrared multiplicity survey of Class I/flat-spectrum objects in the nearest dark clouds.

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.