Praesepe and the seven white dwarfs

PDD and DJP are sponsored by PPARC postdoctoral grants. RN and MRB acknowledge the support of PPARC advanced fellowships. The WHT is operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation

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