NOAO >   Observing Info >   Approved Programs >   2009A-0257

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Proposal Information for 2009A-0257


PI: Bruce Wilking, University of Missouri-St. Louis, bwilking@umsl.edu
Address: Physics Department, 1 University Boulevard, St. Louis, MO 63121, USA

CoI: Kryss Erickson, University of Missouri-St. Louis
CoI: Michael Meyer, University of Arizona
CoI: William Sherry, NOAO
CoI: Serena Kim, University of Arizona

Title: Spectroscopic Confirmation of Young Stars in the Serpens Molecular Cloud: Placing Spitzer and Chandra in Context

Abstract: We propose to complete the first comprehensive spectroscopic survey of young stellar objects associated with the Serpens Main cluster. Already we have obtained optical spectra for 27 Serpens objects with X- ray emission and for the 20 optically brightest objects in the field. Utilizing our deep CCD images of the region obtained last year, we have selected 142 candidate young stellar objects which form an unbiased extinction-limited sample. By observing objects with both blue and red grating settings, we can derive effective temperatures and constrain surface gravities for candidate young stars complete down to 0.5 M_\sun with extinctions A_v\le 4 mag. Using our BVR photometry, we can then derive bolometric luminosities and through comparisons with theoretical tracks and isochrones for young stars, ages and masses. When combined with recent X-ray and infrared surveys of the Serpens region, we will be able to assemble a complete census of young stars, reconstruct the star formation history, and begin investigations into the mass function of this young cluster.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2009A-0257

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