Supplementary information

From the following article:

Surprising dissimilarities in a newly formed pair of 'identical twin' stars

Keivan G. Stassun, Robert D. Mathieu, Phillip A. Cargile, Alicia N. Aarnio, Eric Stempels & Aaron Geller

Nature 453, 1079-1082(19 June 2008)

doi:10.1038/nature07069

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Supplementary information

The file contains Supplementary Discussion, Supplementary Figure 1 with Legend and Supplementary Table 1. A detailed discussion of the methods is presented by which the flux ratio of the components of Par 1802 is determined from analysis of spectra obtained at multiple orbital phases. The Supplementary Figure 1 illustrates this spectroscopic analysis and the measurement of the flux ratio. The Supplementary Table 1 lists the flux measurements of Par 1802 over the wavelength range 0.36 to 8.0 micrometres, which are used in the paper to determine the distance and interstellar extinction to the system (Figure 2).

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