Phase shifts between colours in pulsating stars |
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| Authors: | R Garrido E Rodríguez |
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| Institution: | (1) Instituto de Astrofísica de Andalucía, Granada, Spain |
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| Abstract: | Observational evidence is presented showing that the time of maximum light for pulsating stars depends on observed wavelength. This fact is well explained by assuming that starlight variations comets from both temperature and gravity variations. Conversely, from the time shifts between two colours, temperature and gravity variations can be derived, together with the phase lag between them.Partially based on observations collected at European Southern Observatory, La Silla, Chile.Paper presented at the 11th European Regional Astronomical Meetings of the IAU on  New Windows to the Universe , held 3–8 July, 1989, Tenerife, Canary Islands, Spain. |
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