 | 1974 - عدد الصفحات: 568
...oxygen line at 5577 A than Perseid spectra obtained with the same instrument in 1961. Data from 13 Perseid showers indicate a relationship between the...1969-70. near sunspot maximum, the strength of this auroral green line is greatest near shower maximum, as though the nature of the meteoroids were a function... | |
 | Curtis L. Hemenway, Peter MacKenzie Millman, Allan F. Cook - 1973 - عدد الصفحات: 396
...characteristics of the major meteor showers, Smithson. Contrib. Astrophys., 11, 105-108. VEHNIANI, F., 1967. Meteor masses and luminosity, Smithson....function of the altitude of the radiant. SINCE 1948, A SPECTROGRAPHIC STUDY of the annual Perseid meteors has been conducted by the University of Southern... | |
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Perseid showers indicate a relationship between the frequency of occurrence of the oxygen line and solar activity. In 1969-70, near sunspot maximum, the strength of this so-called auroral green line is greatest near shower maximum, as though the nature... 