PI: Barry F. Madore, Carnegie Institution of Washington, email@example.com
Address: The Observatories, 813 Santa Barbara Street, Pasadena, CA 91101, USA
CoI: Wendy L. Freedman, Carnegie Observatories
CoI: Victoria Scowcroft, Liverpool John Moores University
Title: Calibrating The Metallicity Sensitivity of the Cepheid Period-Luminosity Relation at Near-Infrared Wavelengths
Abstract: We are proposing to undertake the first test for and calibration of the metallicity sensitivity of the Cepheid Period-Luminosity relation in the near-infrared. From the ground and from space several groups are mounting major efforts to recalibrate the extragalactic distance scale using K-band observations of Cepheids. By observing Cepheids in M33 at different radii, sampling different metallicities, we will be able to calibrate the sensitivity of the zero point of the Cepheid PL relation to metallicity in the K band. This will directly address one of the largest remaining systematics in the near-infrared Cepheid distance scale.
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