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Bright Southern Cepheids

Presentation by Stan Walker at the RASNZ Conference 2014

This project has gradually evolved and we're now looking at those with periods in excess of ten days - which appear to be the likeliest to show period changes. Some objects are suited to DSLR photometry, others for binocular measures. O-C diagrams showing period changes, some abrupt, some parabolic and a few with possible short term fluctuations are presented. Some of these go back to the nineteenth century. A list of suitable stars has been compiled. Other aspects include the effects of filter wavelengths upon epochs of maxima and the problems with historical data, particularly photography.




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Size 374.22 KB
Author Stan Walker
Created 2014-07-26 03:51:35
Created by vssadmin
Changed at 2014-08-09 01:41:04
Modified by vssadmin

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