Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....95..553m&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 95, Feb. 1988, p. 553-561, 602, 603.
Astronomy and Astrophysics
Astronomy
7
Astronomical Models, Comet Tails, Mrkos Comet, Plasma Jets, Astronomical Coordinates, Astronomical Photography, Comet Nuclei, Comets, Rays, Mrkos, Astronomy, Earth-Based Observations, Kinematics, Procedure, Models, Features, Magnetic Properties, Flux Tubes, Analysis, Photographic Methods, Comet Tails, Features, Comparisons, Distribution
Scientific paper
It is reasonable to believe that orderly sequences of aligned cometary side-rays may contain information on mechanisms of ray formation that cannot be drawn from study of the properties of single rays. The purpose of this work is to derive quantitative information on the system of curved side-rays displayed by Comet Mrkos 1957V on August 22, 1957. Film copies of three Palomar 122 cm Schmidt plates exposed at 20 min intervals have been used to delineate the forms and derive some kinematical properties of 15 of these rays. The rays folded to the tail axis, as is commonly observed, but at the outer extremities of the four longest rays, this folding gave place to motion away from the axis, the transitions taking place at distances from the nucleus at which there were changes in ray curvature. Properties of the ray system have been compared with several models of ray generation. No single model is consistent with all the observations, but a fuller discussion awaits completion of work in progress on side-ray systems of other comets photographed with the Curtis Schmidt at CTIO.
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