Analysis of infrared photometry of algol |
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Authors: | Ishmael M. Murad Edwin Budding |
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Affiliation: | (1) Dept. of Astronomy, University of Manchester, England;(2) Present address: Dept. of Mathematics and Physics, University of Arbil, Arbil, Iraq;(3) Present address: Carter Observatory, Wellington, New Zealand |
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Abstract: | Infrared (JHKLM) photometry of Per, due to Zeilik (1980), has been analysed by computer-based optimization methods. The data have been used primarily to find empirical mean flux ratios at known IR wavelengths for the two photospheres of the eclipsing pair. These flux ratios have then been compared with values predicted by various model atmosphere calculations. The ratio of effective temperatures can be given asTB/TA=0.42±0.02, but there remains some small discrepancy between the empirical results and model calculations at the longest wavelengths (KLM). The possibility of IR-excess at longer wavelengths is considered, but the evidence is marginal. |
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