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Interplanetary dust particles collected in the stratosphere - Observations of atmospheric heating and constraints on their interrelationships and sources

Sandford, Scott A. ; Bradley, John P.

Icarus (New York, N.Y. 1962), 1989-11, Vol.82 (1), p.146-166 [Periódico revisado por pares]

Legacy CDMS: Elsevier

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Título:
Interplanetary dust particles collected in the stratosphere - Observations of atmospheric heating and constraints on their interrelationships and sources
Autor: Sandford, Scott A. ; Bradley, John P.
Assuntos: Atmosphere ; Cosmic dust ; Dust - analysis ; Earth (Planet) ; Earth, ocean, space ; Exact sciences and technology ; External geophysics ; Extraterrestrial Environment ; Hot Temperature ; Iron Compounds - analysis ; Lunar And Planetary Exploration ; Magnesium Compounds - analysis ; Meteoroids ; Microscopy, Electron ; Minerals - analysis ; Minor Planets ; Particle Size ; Physics of the high neutral atmosphere ; Silicates - analysis ; Solar System ; Space life sciences ; Spectroscopy, Fourier Transform Infrared
É parte de: Icarus (New York, N.Y. 1962), 1989-11, Vol.82 (1), p.146-166
Notas: CDMS
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Descrição: TEM and IR spectroscopy investigations of the interplanetary dust particles (IDPs) collected in the stratosphere have shown the majority of IDPs in the layer-lattice silicate and pyroxene classes to not have been heated to temperatures above 600 C during atmospheric entry. This implies that they arrive at the upper atmosphere with low geocentric encounter velocities, and limits the possible encounter trajectories for these particles to relatively circular prograde orbits. On this basis, it is judged unlikely that these IDPs are from earth-crossing comets or asteroids; collected IDPs dominated by olivine include a larger portion of above-600 C-heated particles, suggesting their capture from more eccentric orbits.
Editor: Legacy CDMS: Elsevier
Idioma: Inglês

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Interplanetary dust particles collected in the stratosphere - Observations of atmospheric heating and constraints on their interrelationships and sources

Sandford, Scott A. ; Bradley, John P.

Legacy CDMS: Elsevier

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