AAS 195th Meeting, January 2000
Session 79. Young Stars and Clusters
Display, Friday, January 14, 2000, 9:20am-6:30pm, Grand Hall

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[79.13] A Near Infrared Imaging Survey of Three Embedded Clusters: NGC 2024, NGC 2071 & NGC 2068

D. B. Dahari, E. A. Lada (U. Florida)

Embedded clusters are important laboratories for the study of star and planet formation in our galaxy. We have completed an extensive near-infrared, JHK survey of three star clusters located in the nearby Orion L1630 molecular cloud at a distance of 400 pc. We present an analysis of JHK colors in order to determine and compare the frequency distribution of circumstellar disks in these clusters.

>From our JHK color-color analysis, we find that more than 60 suggesting extremely young ages (~1-2 Myrs) for the clusters. We also investigate the distribution of the near-IR excess sources as a function of radius in each cluster. Finally we construct and compare the K-band luminosity functions (KLFs) for the three clusters. We compare these observed luminosity functions to KLF models (Muench, Lada & Lada 1999) in order to place constraints on the initial mass function (IMF).

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