AAS Meeting #193 - Austin, Texas, January 1999
Session 71. Molecular Clouds
Display, Friday, January 8, 1999, 9:20am-6:30pm, Exhibit Hall 1

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[71.11] Near-Infrared Extinction Properties of the Rosette Molecular Cloud

D. R. Ciardi, E. A. Lada, R. L. Phelps (University of Florida)

We have imaged a 0.7 deg2 region of the Rosette Molecular Cloud (RMC) in the near-infrared broadband filters J, H, & K at a resolution of 1\farcs 36 per pixel. Previously published results (Phelps & Lada 1997) included seven embedded near-infrared clusters; all of which are associated with IRAS point sources and molecular gas clumps traced by 13CO. However, five IRAS point sources (and the associated 13CO clumps) appear to contain no embedded clusters. We have used the near-infrared extinction of background sources to trace the line of sight dust extinction of the RMC, and we present preliminary results concerning the distribution of the dust throughout the cloud, and specifically near the cluster-free cores. Finally, based upon the technique outlined by Kenyon, Lada, & Barsony (1998), we present a determination of the near-infrared extinction law in the RMC.

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