An early-medieval account on the red colour of Sirius and its astrophysical implications

  title={An early-medieval account on the red colour of Sirius and its astrophysical implications},
  author={Wolfhard Schlosser and Werner. Bergmann},
An unresolved problem regarding ancient astronomical records is that of the star ‘Red Sirius’. While Sirius today shines white with a blueish hue quite in agreement with its spectral type AIV, many Greek/Roman and Babylonian sources (although still disputed) definitely assign a red colour to this star. We now present new and apparently independent information about Red Sirius from an early-medieval manuscript. This manuscript is of Lombardic origin (8th century) and contains the otherwise lost… 

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