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15:30 Cepheids: New Satellite Results | Nancy Evans ( Smithsonian Astrophysical Observatory ) @ Aula OAPA
Cepheids: New Satellite Results | Nancy Evans ( Smithsonian Astrophysical Observatory ) @ Aula OAPA
Set 28@15:30–16:30
The first characteristic measured for Cepheids is their periods. The next step is to determine their pulsation mode. We have made month long observations with the MOST satellite of a fundamental mode Cepheid (RT Aur) and an overtone Cepheid (SZ Tau). The quantity and quality of the satellite data have shown that the Fourier parameters of the overtone are far