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Radius of a star as a function of wavelength

  1. Aug 5, 2008 #1
    Hi all,

    My question is, does the radius of a star vary significantly between different wavelengths? I am particularly interested in the 100 nm to 100 micron range. I found a paper by Paul Swanson on the radio band radius, but so far can find nothing which compares optical and infrared measurements.

  2. jcsd
  3. Aug 6, 2008 #2
    In this wavelength range, most of the radiation comes from the photosphere, which I don't think would vary much in size as a function of wavelength
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