A Gaseous Metal Disk Around a White Dwarf
@article{Gaensicke2006AGM, title={A Gaseous Metal Disk Around a White Dwarf}, author={B. Gaensicke and T. Marsh and J. Southworth and A. Rebassa-Mansergas}, journal={Science}, year={2006}, volume={314}, pages={1908 - 1910} }
The destiny of planetary systems through the late evolution of their host stars is very uncertain. We report a metal-rich gas disk around a moderately hot and young white dwarf. A dynamical model of the double-peaked emission lines constrains the outer disk radius to just 1.2 solar radii. The likely origin of the disk is a tidally disrupted asteroid, which has been destabilized from its initial orbit at a distance of more than 1000 solar radii by the interaction with a relatively massive… CONTINUE READING
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