An astrophysical investigation of four classical cepheid variable stars
Since Leavitt (1912 ) made the extraordinary finding that there was a correlation between the periods and the brightnesses of cepheid variables in the Small Magellanic Cloud, these stars have been an extremely important source of distance information in astronomy . Numerous attempts were made following this discovery to calibrate the period-luminosity law and apply it to problems of galactic structure and extragalactic distances. The intrinsic brightness of these stars together with the...[Show more]
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