Deep near-IR imaging and spectroscopy of massive star-forming regions

Details Deep near-IR imaging and spectroscopy of massive star-forming regions Deep near-IR imaging and spectroscopy of massive star-forming regions

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005noao.prop..532a&link_type=abstract

NOAO Proposal ID #2005B-0532

Computer Science

Scientific paper

We propose wide-field (20' × 20') FLAMINGOS imaging and MOS of young high-mass stellar clusters in our Spitzer GTO program. The proposed imaging data will provide JHK photometry for 5 clusters at distances of 2-3 kpc, which range in size from a few hundred to > 1000 stars. The MOS data will provide spectral types for the young embedded portions of 3 of these clusters, enabling their placement in the HR diagram and estimation of stellar masses and ages. The FLAMINGOS observations will be a key element in our optical/infrared/millimeter- wave study of young high-mass clusters, with the goals of: 1) surveying each group and cluster to masses below 1 M_&sun;, 2) determining the properties of the constituent stars using near-infrared and optical spectra and 0.6-8 (micron) spectral energy distributions, 3) comparing the star formation properties in each region, 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 disentagle potential source confusion in the > 2 arcsec angular resolution Spitzer data. FLAMINGOS spectroscopy is necessary for characterizing the ages and masses of the embedded stars not accessible with optical spectroscopy. The combined FLAMINGOS+Spitzer data will provide a complete inventory of disks and protostars in a large sample of young (few Myr) high-mass stellar clusters.

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