CLASSIFICATION OF SOLAR PROMINENCES FOR SUNSPOT CYCLE NO. 19 (1955-1964) - SUMMARY.
HARVARD COLL OBSERVATORY CAMBRIDGE MASS SOLAR DEPT
Pagination or Media Count:
The areas and behavior classifications of the prominences on the sun during Solar Cycle No. 19 are summarized, and a study is presented of the distribution of the various classes with solar latitude. During this solar cycle, 90 per cent of the prominences were of A types in which the material descended from the corona, and 16 per cent were of S types, associated with sunspots. The biggest class of prominences was the ANd or hedgerow type the smallest, the ASls of loop prominences. The overall trend in prominence areas was thus due mainly to the ANd prominences. North-south asymmetries of the areas reveal that for all classes of prominences together there was a northern excess except for the year 1961. Author