Evolution and decay of the peculiar meteor stream associated with Comet Lexell

Details Evolution and decay of the peculiar meteor stream associated with Comet Lexell Evolution and decay of the peculiar meteor stream associated with Comet Lexell

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...127..373c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 127, no. 2, Nov. 1983, p. 373-382.

Astronomy and Astrophysics

Astrophysics

12

Astronomical Models, Comets, Meteor Trails, Meteoroid Showers, Brightness, Ejection, Evolution (Development), Jupiter (Planet), Particle Mass, Radiation Pressure, Solar Radiation, Comets, Lexell, Evolution, Decay, Meteor Showers, Models, Dynamics, Particles, Diagrams, Ejecta, Velocity, Brightness, Solar Radiation, Mass, Pressure, Motion, Density, Perturbations, Ejection

Scientific paper

Model computations of the dynamical evolution of meteor particles ejected from Comet Lexell (Carusi et al., 1982) are applied to investigate the properties of that part of the swarm which remained in earth-crossing orbits. Relations between ejection velocity and particle mass, and between the mass and brightness at the entry into the earth atmosphere, are evaluated. The effect of solar radiation pressure on the motion of the particles is taken into account, and found to be significant for the surviving part of the stream. The percentage of the surviving population is small, rather sensitive to the bulk density of the particles, and does not contain large and bright objects. Elimination of larger particles by Jupiter's perturbations is shown to represent a decay mechanism which, in rare cases like that of Comet Lexell, may give rise to meteor showers composed exclusively of faint meteors.

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