Infrared Spectra of Dust Orbiting Single White Dwarfs

Details Infrared Spectra of Dust Orbiting Single White Dwarfs Infrared Spectra of Dust Orbiting Single White Dwarfs

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40246j&link_type=abstract

Spitzer Proposal ID #40246

Computer Science

Scientific paper

We propose IRS observations of six single white dwarfs with an IRAC-detected infrared excess. We hope to determine, as found previously for G29-38 and GD 362, whether these six additional stars display silicate dust emission characteristic of pulverized asteroids rather than interstellar grains. If so, then the case will be strengthened that we can use the measured metal abundances in the photospheres of white dwarfs to determine the bulk composition of extra-solar minor planets.

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