• Equivalent widths of hydrogen Lyman alpha line in an expanding spherical atmosphere

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    • Keywords


      radiative transfer; Lyman α line; expanding atmospheres; circumstellar dust

    • Abstract


      We have calculated the profiles of hydrogen Lyman a line in an expanding spherical atmosphere containing dust and gas. We have investigated the variation of equivalent widths with velocities of expansion of the atmosphere, together with the amount of dust present in the medium. We have drawn curves of growth for different velocities and dust optical depths

    • Author Affiliations


      A. Peraiah1 M. F. Ingalgi1

      1. Indian Institute of Astrophysics, Bangalore - 560034
    • Dates

  • Journal of Astrophysics and Astronomy | News

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