Spitzer Observations of GD 362 and Other Metal-Rich White Dwarfs

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dc.creatorFarihi, J.
dc.creatorZuckerman, B.
dc.creatorBecklin, E. E.
dc.creatorJura, M.
dc.date2006-10-04
dc.date.accessioned2026-07-07T07:26:50Z
dc.date.available2026-07-07T07:26:50Z
dc.descriptionA {\em Spitzer} IRAC survey of 17 nearby metal-rich white dwarfs, nominally DAZ stars, reveals excess emission from only 3 targets: G29-38, GD 362 and G167-8. Observations of GD 362 with all three {\em Spitzer} instruments reveals a warm ($\approx1000$ K) dust continuum, very strong silicate emission, and the likely presence of cooler ($\approx500$ K) dust. While there is a general similarity between the mid-infrared spectral energy distributions of G29-38 and GD 362, the IRAC fluxes of G167-8 are so far unique among white dwarfs. However, further observations of G167-8 are required before the measured excess can be definitely associated with the white dwarf.
dc.description6 pages, 3 figures, to appear in the ASP Conference Series for the 15th European White Dwarf Workshop
dc.identifierhttps://arxiv.org/abs/astro-ph/0610101
dc.identifierhttp://arxiv.org/abs/astro-ph/0610101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/117171
dc.subjectAstrophysics
dc.titleSpitzer Observations of GD 362 and Other Metal-Rich White Dwarfs
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