A Search for Cold Dust Orbiting GD 362 comma a Highly Polluted White Dwarf With Detected Warm Dust
收藏ESA Earth Online2026-06-22 收录
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We propose to observe GD 362 to measure the amount of cold dust orbiting this white dwarf which is already known to possess warm dust. There are two models to account for the large amount of atmospheric hydrogen in this externallypolluted star whose atmosphere is largely helium. (1) The star is accreting from a single Marsmass parent body. In this case there is no reason to expect cold dust. (2) The star is accreting from an ensemble of 100.s of Ceresmass asteroids; a large amount of cold dust likely is present. If so, the source could be detected with PACS. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]
