Praesepe and the seven white dwarfs

P. D. Dobbie,D. J. Pinfield,R. Napiwotzki,N. C. Hambly,M. R. Burleigh,M. A. Barstow,R. F. Jameson,I. Hubeny

Monthly Notices of the Royal Astronomical Society（2004）

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摘要

We report the discovery, from our preliminary survey of the Praesepe open cluster, of two new spectroscopically confirmed white dwarf candidate members. We derive the effective temperatures and surface gravities of WD0837+218 and WD0837+185 (LB5959) to be 17845+555−565 K and log g = 8.48+0.07−0.08 and 14170+1380−1590 K and log g = 8.46+0.15−0.16, respectively. Using theoretical evolutionary tracks...

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关键词

white dwarfs,open clusters and associations: individual: Praesepe

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