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Image-Orthicon Spectra of Geminids in 1969

Published online by Cambridge University Press:  12 April 2016

P. M. Millman ,
A. F. Cook  and
C. L. Hemenway
P. M. Millman
Affiliation:
National Research Council of CanadaOttawa, Ontario
A. F. Cook
Affiliation:
Smithsonian Astrophysical ObservatoryCambridge, Massachusetts
C. L. Hemenway
Affiliation:
State University of New York at Albany and Dudley ObservatoryAlbany, New York

Abstract

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The spectra of 25 meteors, recorded with an image-orthicon technique in December 1969, are studied in relation to similar records made in August of the same year. Of 19 Geminid meteors in the absolute visual magnitude range 0 to + 2, only one showed any evidence of the forbidden line of oxygen at 5577 Å, while all Perseid meteors recorded in August exhibited the oxygen line, a result of the large difference in geocentric velocity between the two showers. Atoms identified in faint Geminid meteors include neutral iron, magnesium, calcium and sodium. The molecular bands of nitrogen are also observed.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 13: Evolutionary and Physical Properties of Meteoroids , June 1971 , pp. 147 - 151
Copyright
Copyright © NASA 1971

References

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