NOAO >   Observing Info >   Approved Programs >   2011B-0096

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Proposal Information for 2011B-0096


PI: Randa Asa'd, University of Cincinnati, asadrs@mail.uc.edu
Address: Physics Department, P.O.Box 210011, Cincinnati, OH 45221, U.S.A

CoI: Andrea Ahumada, ESO
CoI: Margaret Hanson, University of Cincinnati

Title: Spectra of star clusters in the LMC as an age indicator.

Abstract: We propose to obtain spectrophotometry for an extensive sample of LMC star clusters of different ages. Our sample of star clusters have previously established ages and metallicities from modern, stellar, color-magnitude diagrams and the analysis of individual red giant spectra. The new, integrated spectra we will obtain with this program will provide a critical calibration to modernize and improve spectroscopic studies of unresolved, extragalactic stellar clusters. Integrated spectroscopy is a widely used means to obtain ages and metallicities of star clusters in distant galaxies, enabling their star formation and chemical enrichment history to be revealed. However, no significant age calibration of the integrated spectroscopic features of stellar clusters have been obtained in more than two decades.


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 >   2011B-0096

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