Evolved solar systems in Praesepe
Casewell, Sarah L.; Burleigh, Matt R.; Dobbie, Paul D.; Napiwotzki, Ralf
Citation: Casewell , S L , Burleigh , M R , Dobbie , P D & Napiwotzki , R 2011 , ' Evolved solar systems in Praesepe ' . in S Schuh , H Drechsel & U Heber (eds) , Planetary Systems Beyond the Main Sequence . vol. 1331 , AIP Conference Proceedings , American Institute of Physics , Melville , pp. 292-296 .
We have obtained near-IR photometry for the 11 Praesepe white dwarfs, to search for an excess indicative of a dusty debris disk. All the white dwarfs are in the DAZ temperature regime, however we find no indications of a disk around any white dwarf. We have, however determined that the radial velocity variable white dwarf WD0837+185 could have an unresolved T8 dwarf companion that would not be seen as a near-IR excess.
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