NOAO >   Observing Info >   Approved Programs >   2008B-0179

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Proposal Information for 2008B-0179


PI: Chow-Choong Ngeow, University of Illinois, cngeow@astro.uiuc.edu
Address: Department of Astronomy, 1002 W Green St., Urbana, IL 61801, USA

CoI: Shashi M. Kanbur, State University of New York at Oswego
CoI: Lucas Macri, Texas A&M University
CoI: Deokkeun An, The Ohio State University

Title: Observations of the Large Magellanic Cloud Cepheids in Sloan Filters

Abstract: We propose to observe Large Magellanic Cloud (LMC) Cepheids using the CTIO 0.9m Telescope in Sloan ugriz filters. Our target Cepheids are previously well-known LMC Cepheids with periods ranging from 3 to 100 days. Most of them are located in uncrowded regions of the LMC. The purpose for these observations is to check and validate the zero- points (ZP) of the Cepheid period-luminosity (PL) relation in the Sloan filters derived from a semi-empirical approach. Errors on these semi- empirical ZPs could be as much as 0.5mag. The best way to calibrate these ZPs is empirically. This is important for future distance scale work that will employ the Sloan filters.


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NOAO >   Observing Info >   Approved Programs >   2008B-0179

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