On the Origin of Metals in Some Hot White Dwarf Photospheres

Details On the Origin of Metals in Some Hot White Dwarf Photospheres On the Origin of Metals in Some Hot White Dwarf Photospheres

2011-02-02

arxiv.org/abs/1102.0510v1

AIP Conference Proceedings, Volume 1331, pp. 289-291 (2011)

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Part of PlanetsbeyondMS/2010 proceedings http://arxiv.org/html/1011.6606

Scientific paper

10.1063/1.3570987

We have searched for evidence for dust and gas disks at a sample of hot DA white dwarfs 20 000K < Teff < 50 000K, without success. Although their atmospheres are polluted with heavy elements, we cannot yet convincingly and conclusively show that any of these objects is accreting metals from surrounding material derived from disrupted minor planets in an old solar system.

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