PI: Kurtis A. Williams, University of Arizona, email@example.com
Address: Steward Observatory, 933 N Cherry Ave, Tucson, AZ 85721, USA
CoI: Michael Bolte, UCO/Lick Observatory
Title: White dwarfs in open clusters: the initial final mass relation and supernova mass limit
Abstract: White dwarfs are excellent observational probes for determination the minimum mass of core-collapse supernova progenitors (\mcrit) and for determination of the initial-final mass relation (the relation between a progenitor star mass and the resultant WD mass). To date, the best estimates give \mcrit\gtrsim 6\msun, a limit based primarily on the single white dwarf in the Pleiades. The initial-final mass relation is known for only a few clusters, and it is unknown whether there is any intrinsic scatter or metallicity-dependence in the relation. We propose imaging of several young and intermediate-age open clusters in order to develop a large sample of white dwarfs to address these issues. \ubv imaging of young open clusters will be used to detect WDs in open clusters spanning a range of metallicities and ages to construct a sample of WDs suitable for exploring the initial-final mass relation and \mcrit. Shallow imaging of each cluster will be used to determine cluster ages, distances, extinction and metallicities, poorly-known quantities that are vital to interpretation of the WD samples. \emphThese data will complete the imaging phase of this project.
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