NOAO >   Observing Info >   Approved Programs >   2007A-0345

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Proposal Information for 2007A-0345


PI: Xavier Koenig, Harvard-Smithsonian CfA, xkoenig@cfa.harvard.edu
Address: Optical and Infrared Astronomy, 60 Garden Street, Cambridge, MA 02138, USA

CoI: Lori Allen, Harvard-Smithsonian CfA
CoI: Joseph Hora, Harvard-Smithsonian CfA
CoI: Luis Chavarria, Harvard-Smithsonian CfA

Title: Mapping the Young Stellar Content of the W5 star forming region

Abstract: We propose FLAMINGOS JHK imaging of the entire W5 HII/star forming region enabling the completion of our study of the young high-mass stellar clusters that comprise the structure, ranging in size from ~40 to ~200 stars. The FLAMINGOS observations will be a key element in an optical/infrared/millimeter-wave study of this region, with the goals of: 1) surveying all groups and clusters to masses below 1 M_\odot with FLAMINGOS and \it Spitzer, 2) comparing the star and planet formation properties and evolutionary classes of stars in clusters across W5 using their 0.5-24 (micron) SEDs, and 3) 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 disentangle 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 this large (2 ^\circ \times 1.5 ^\circ) star forming region.


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