Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2010-12-06
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
4 pages, 1 table, 2 figures. Part of PlanetsbeyondMS/2010 proceedings http://arxiv.org/html/1011.6606v1
Scientific paper
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.
Burleigh Matthew R.
Casewell Sarah L.
Dobbie Paul D.
Napiwotzki Ralf
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