Near-Infrared Imaging of Protostellar Clusters

Details Near-Infrared Imaging of Protostellar Clusters Near-Infrared Imaging of Protostellar Clusters

Aug 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop..342m&link_type=abstract

NOAO Proposal ID #2000B-0342

Computer Science

Scientific paper

We propose SQIID multiband IR imaging of the LBS 23 and OMC2/3 regions in the Orion Giant Molecular Clouds. Submillimeter observations of these regions show a remarkable number of protostars, indicating that these regions are forming stars at a rapid rate, but neither LBS-23 or OMC-2/3 have been surveyed extensively at infrared wavelengths. Using deep observations with SQIID on the 2.1-m telescope, we will survey the embedded stellar population of pre--main sequence stars down to the hydrogen burning limit in these highly extincted regions. These observations will give us a unique opportunity to study the earlier stages of cluster formation before the parental molecular gas has been significantly disrupted by HII regions. We will examine the spatial distribution to study the fragmentation history of the molecular gas and to use the spacing of the observed YSOs to constrain theories of cluster formation. We will also study the early evolution of the IMF and fraction of stars with disks by comparing these ``protoclusters'' to more more evolved regions such as the Trapezium cluster and NGC 2024.

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