ZODIACAL EMISSION .3. DUST NEAR THE ASTEROID BELT

被引:40
作者
REACH, WT [1 ]
机构
[1] UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720
关键词
DUST; EXTINCTION; INTERPLANETARY MEDIUM; METEOROIDS; MINOR PLANETS;
D O I
10.1086/171428
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Properties of the zodiacal dust bands are derived from fits to Infrared Astronomical Satellite profiles of the ecliptic. Three observations lead to the conclusion that the dust-band material is spread over a range of heliocentric distances between the asteroid belt and the Sun: parallax, color temperature, and wavelength dependence of the band latitudes. The orientations of the midplanes of the bands are found to be typical of asteroids. A model of "migrating bands," wherein dust is produced near the asteroid belt and spirals into the Sun under the influence of Poynting-Robertson drag, is used to explain the range of heliocentric distances of dust-band material.
引用
收藏
页码:289 / 299
页数:11
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