Why Variable Stars Change Magnitudes Periodically

AI Thread Summary
Variable stars exhibit changes in brightness due to various physical processes, including pulsation, eruptions, and eclipses. These changes can occur periodically, influenced by factors like stellar evolution and interactions with companion stars. The discussion emphasizes the complexity of these phenomena, suggesting that a comprehensive understanding requires further research and exploration of specialized resources. For detailed classifications and characteristics of variable stars, sources like the General Catalogue of Variable Stars (GCVS) and educational outreach from astrophysical institutions are recommended. Understanding variable stars is essential for broader astronomical studies and insights into stellar behavior.
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why variable stars have various magnitudes? and y they are changing periodically?
 
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tmwong said:
why variable stars have various magnitudes? and y they are changing periodically?
It would take all day to answer that question - try here, then Google on "variable star" if you need more information.

http://www.aavso.org/vstar/types.shtml
 
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Another source:
http://outreach.atnf.csiro.au/education/senior/astrophysics/variable_types.html

For all the gory details, GCVS is the place to go:
http://www.sai.msu.su/groups/cluster/gcvs/gcvs/

Footnote: The excellent source turbo-1 gave also includes a GCVS link.
 
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