Physical and mathematical modeling of the formation and evolution of meteor streams. I

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Models, Comet Nuclei, Mathematical Models, Meteoroids, Orbital Velocity, Comets, Draconid Meteoroids, Leonid Meteoroids, Orbital Elements, Perihelions, Perseid Meteoroids, Taurid Meteoroids

Scientific paper

On the assumption that meteor streams are formed by the disintegration of comet nuclei, statistical tests are carried out to estimate the velocity at which meteroids are ejected from a nucleus, and the stream formation process is simulated. A comparison is made between the model calculations and the observations of the Taurid, Draconid, Perseid, and Leonid streams. Similar calculations are performed for the Lyrids, Andromedids, eta-Aquarids, Orionids, Ursids, and alpha-Capricornids in order to test their possible association with comets 1861 I, 1852 III, 1910 II, 1939 X, and 1954 III. Initial orbital elements are presented for the meteor streams and the comets, as well as the model results for particles ejected at velocities up to 100 m/sec from the nuclei of comets 1861 I, 1852 III, and 1910 II at perihelion of their orbits and up to 350 m/sec from the nuclei of comets 1910 II, 1939 X, and 1954 III.

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