Abstract
The basic physical picture of the Algol system is reviewed, and, using collected red and infrared observations, photometric curve fits are investigated by applying numerical quadratures to determine theoretical light curves appropriate to Roche model stars. The ‘contact’ nature of Algol B appears to be confirmed, and effective temperatures of the three components areT A=11 400°,T B=5300°,T C=7600°. In terms of a Lambert's law approach to the ‘reflection effect’, the effective heat-albedo is required to be reduced from unity to one half; and it is also found that the averaged ‘gravity-darkening coefficient’ is close to a value appropriate for a diffusion type of heat-transfer mechanism operating in sub-photospheric layers.
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Al-Naimiy, H.M., Budding, E. Analysis of red and infrared wide-band photometry of Algol. Astrophys Space Sci 51, 265–282 (1977). https://doi.org/10.1007/BF00644152
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DOI: https://doi.org/10.1007/BF00644152