NOAO >   Observing Info >   Approved Programs >   2005A-0224

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Proposal Information for 2005A-0224


PI: Lori Allen, Harvard-Smithsonian CfA, leallen@cfa.harvard.edu
Address: SAO, 60 Garden Street, Cambridge, MA 02138, USA

CoI: Joseph Hora, CfA
CoI: Luis Chavarria, CfA
CoI: Tom Megeath, CfA

Title: Deep Near-IR Imaging of massive star forming regions imaged with Spitzer

Abstract: We propose wide-field (20' \times 20') FLAMINGOS imaging of young high-mass stellar clusters in our \it Spitzer GTO program. The FLAMINGOS observations will provide JHK photometry for four clusters at distances of 2-3 kpc, which range in size from a few hundred to >1000 stars. The FLAMINGOS observations will be a key element in a infrared/millimeter-wave study of young high-mass clusters, with the goals of: 1) surveying each group and cluster to masses well below 1 M_\odot with FLAMINGOS and \it Spitzer, 2) determining the properties of the constituent stars using 1-8 (micron) infrared spectral energy distributions (SEDs), 3) comparing the star and planet formation properties in each region using their SEDs, and 4) characterizing the interaction between the hot, high-mass stars in these clusters and their surrounding ISM. FLAMINGOS photometry in the 1-2.2 (micron) regime is necessary to detect and characterize the photospheric emission from the embedded stars. In addition, the sub-arcsecond resolution expected with FLAMINGOS will be used to distentagle potential source confusion in the >2\arcsec angular resolution \it Spitzer data. The combined FLAMINGOS+\it Spitzer data will provide the first inventory of disks and protostars in a large sample of young (few Myr) high-mass stellar clusters.


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