New Observations and Models of the Kinematics of the Zodiacal Dust Cloud

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dc.creatorMadsen, G. J.
dc.creatorReynolds, R. J.
dc.creatorIpatov, S. I.
dc.creatorKutyrev, A. S.
dc.creatorMather, J. C.
dc.creatorMoseley, S. H.
dc.date2006-04-11
dc.date.accessioned2026-07-07T07:04:38Z
dc.date.available2026-07-07T07:04:38Z
dc.descriptionWe report on new observations of the motion of zodiacal dust using optical absorption line spectroscopy of zodiacal light. We have measured the change in the profile shape of the scattered solar Mg I 5184 line toward several lines of sight in the ecliptic plane as well as the ecliptic pole. The variation in line centroid and line width as a function of helio-ecliptic longitude show a clear prograde signature and suggest that significant fraction of the dust follows non-circular orbits that are not confined to the ecliptic plane. When combined with dynamical models, the data suggest that the zodiacal dust is largely cometary, rather than asteroidal, in origin.
dc.description4 pages, 3 figures, to appear in refereed proceedings of 'Dust in Planetary Systems' (ESA), ed. H. Kruger & A. Graps, Sept. 2005
dc.identifierhttps://arxiv.org/abs/astro-ph/0604229
dc.identifierhttp://arxiv.org/abs/astro-ph/0604229
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109386
dc.subjectAstrophysics
dc.titleNew Observations and Models of the Kinematics of the Zodiacal Dust Cloud
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