Spitzer Spots Comets Around A White Dwarf

Details Spitzer Spots Comets Around A White Dwarf Spitzer Spots Comets Around A White Dwarf

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005nrdd.conf...19k&link_type=abstract

Proceedings of the Miniworkshop on Nearby Resolved Debris Disks. October 19-20, 2005. Space Telescope Science Institute, Baltimo

Physics

Scientific paper

We present new observations of the white dwarf G 29-38 with the Spitzer Space Telescope. We detected a strong silicate emission feature, whose shape can be explained by a mixture of amorphous olivine and a small amount of forsterite. The spectral energy distribution also requires amorphous carbon to explain the hot continuum. The properties of this cloud suggest a relatively recent disruption of a comet or asteroid that has temporarily boosted the dust population around this exceptional star.

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